"Pseudo-MPEC" for SWAN26B
This is the unconstrained solution, resulting in e=1.00056 +/- 0.00073 (i.e., convincingly close to parabolic). It's normally considered "good practice" to constrain a poorly defined comet arc to be parabolic. But the uncertainty of the eccentricity in an unconstrained orbit gives a good sanity check; had I gotten, say, e=1.054 +/- 0.008, I'd have wondered what was wrong. And the gradual decrease in its uncertainty is a good metric of orbit quality.
You can click here for a solution constrained to be parabolic. The results are fairly similar.
You can also click here for the astrometric data, assembled from and with references to comets-ml posts (all of the data I've seen thus far was posted on that list).
Created 2026 Mar 6 20:04:06 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
Astrometry:
SWAN26B SK260111:225419805300.3051 -17.933 249
SWAN26B sK260111:2254198052 +J00000VEUX -J00000QxHe -J00000CWSB 249
SWAN26B SK260112:083016397300.4804 -17.551 249
SWAN26B sK260112:0830163972 +0.00750012 -J00000Qp4G -J00000CVry 249
SWAN26B SK260112:204216231300.6951 -17.0632 249
SWAN26B sK260112:2042162312 +J00000VlT7 -J00000Qeah -0.00297945 249
SWAN26B SK260113:080616645300.8965 -16.6015 249
SWAN26B sK260113:0806166452 +J00000W2MJ -J00000QUly -J00000CULz 249
SWAN26B SK260113:184216987301.0865 -16.1711 249
SWAN26B sK260113:1842169872 +J00000WHpn -J00000QLbV -0.00297374 249
SWAN26B SK260114:080616215301.3259 -15.62 249
SWAN26B sK260114:0806162152 +J00000Wb51 -J00000Q9y8 -J00000CSbk 249
SWAN26B SK260115:083016271301.7647 -14.5917 249
SWAN26B sK260115:0830162712 +J00000X9Bt -J00000Poel -J00000CQe3 249
SWAN26B SK260115:185416677301.9498 -14.1439 249
SWAN26B sK260115:1854166772 +J00000XNLx -J00000PfWb -J00000CPkY 249
SWAN26B S2026 01 17.930 20 11 36 -11 46 249
SWAN26B s2026 01 17.930 2 +0.00821002 -0.00594327 -0.00294005 249
SWAN26B S2026 01 18.930 20 13 24 -10 34 9 V 249
SWAN26B s2026 01 18.930 2 +0.00832136 -0.00586108 -0.00293016 249
SWAN26B C2026 01 19.034 20 14 04 -10 41 00 34794 10.9 U PUNCH500
SWAN26B C2026 01 19.167 20 14 22 -10 33 00 34794 10.8 U PUNCH500
SWAN26B C2026 01 19.434 20 14 59 -10 16 00 34794 10.6 U PUNCH500
SWAN26B C2026 01 19.684 20 15 19 -10 00 00 34795 11.0 U PUNCH500
SWAN26B C2026 01 19.756 20 15 34 -09 54 00 34794 10.7 U PUNCH500
SWAN26B S2026 01 19.916 20 15 12 -09 39 249
SWAN26B s2026 01 19.916 2 +0.00842586 -0.00577994 -0.00291986 249
SWAN26B C2026 01 20.167 20 16 13 -09 26 00 34827 10.7 V PUNCH500
SWAN26B C2026 01 20.573 20 16 56 -08 56 30 34827 10.8 V PUNCH500
SWAN26B C2026 01 20.773 20 17 27 -08 43 00 34827 10.9 V PUNCH500
SWAN26B C2026 01 20.911 20 17 40 -08 35 00 34827 10.8 V PUNCH500
SWAN26B S2026 01 20.916 20 17 06 -08 43 249
SWAN26B s2026 01 20.916 2 +0.00852631 -0.00569779 -0.00290897 249
SWAN26B KC2026 01 21.178 20 18 12 -08 17 10 10.6 V 500
SWAN26B KC2026 01 21.511 20 18 50 -07 54 30 10.6 V 500
SWAN26B C2026 01 21.583 20 19 14 -07 48 49 34896 PUNCH500
SWAN26B C2026 01 21.667 20 19 14 -07 44 36 34896 PUNCH500
SWAN26B C2026 01 21.750 20 19 17 -07 36 53 34896 PUNCH500
SWAN26B C2026 01 21.833 20 19 23 -07 31 58 34896 PUNCH500
SWAN26B KC2026 01 21.850 20 19 30 -07 31 00 10.6 V 500
SWAN26B S2026 01 21.916 20 18 06 -07 17 249
SWAN26B s2026 01 21.916 2 +0.00862105 -0.00561608 -0.00289776 249
SWAN26B C2026 01 21.917 20 19 37 -07 27 17 34896 PUNCH500
SWAN26B C2026 01 21.994 20 19 47 -07 21 10 34896 PUNCH500
SWAN26B C2026 01 22.000 20 19 49 -07 21 17 34895 PUNCH500
SWAN26B C2026 01 22.083 20 19 49 -07 14 57 34895 PUNCH500
SWAN26B C2026 01 22.167 20 20 06 -07 08 36 34895 PUNCH500
SWAN26B C2026 01 22.417 20 20 58 -06 38 55 34895 x PUNCH500
SWAN26B C2026 01 22.667 20 21 03 -06 35 12 34895 PUNCH500
SWAN26B C2026 01 22.883 20 21 22 -06 23 52 34895 x PUNCH500
SWAN26B S2026 01 22.903 20 20 30 -06 02 249
SWAN26B s2026 01 22.903 2 +0.00870882 -0.00553628 -0.00288655 249
SWAN26B C2026 01 22.917 20 21 35 -06 17 59 34895 PUNCH500
SWAN26B C2026 01 22.994 20 21 45 -06 11 26 34895 PUNCH500
SWAN26B C2026 01 23.128 20 22 01 -06 02 56 34895 PUNCH500
SWAN26B C2026 01 23.284 20 22 22 -05 52 00 34752 10.5 U PUNCH500
SWAN26B C2026 01 23.361 20 22 37 -05 46 00 34752 PUNCH500
SWAN26B C2026 01 23.411 20 22 41 -05 43 00 34752 PUNCH500
SWAN26B S2026 01 23.889 20 23 03 -04 47 249
SWAN26B s2026 01 23.889 2 +0.00879098 -0.00545763 -0.00287537 249
SWAN26B C2026 01 24.723 20 25 28 -04 15 00 34752 10.5 U PUNCH500
SWAN26B C2026 01 24.72811320 25 29.6 -04 14 17 34777 PUNCH500
SWAN26B C2026 01 24.76700220 25 34.2 -04 11 27 34777 PUNCH500
SWAN26B C2026 01 24.77255820 25 34.6 -04 10 54 34777 PUNCH500
SWAN26B C2026 01 24.778 20 25 33 -04 10 00 34752 PUNCH500
SWAN26B C2026 01 24.77811320 25 36.0 -04 10 18 34777 PUNCH500
SWAN26B C2026 01 24.78366920 25 40.0 -04 09 44 34777 PUNCH500
SWAN26B C2026 01 24.78922520 25 36.1 -04 09 28 34777 PUNCH500
SWAN26B C2026 01 24.850 20 25 45 -04 04 30 34752 PUNCH500
SWAN26B S2026 01 24.889 20 24 00 -03 53 249
SWAN26B s2026 01 24.889 2 +0.00886866 -0.00537944 -0.00286425 249
SWAN26B C2026 01 25.167 20 26 33 -03 44 14 34890 PUNCH500
SWAN26B C2026 01 25.250 20 26 41 -03 40 24 34890 PUNCH500
SWAN26B C2026 01 25.33 20 26 54 -03 32 30 34764 10.3 U PUNCH500
SWAN26B C2026 01 25.333 20 26 55 -03 34 16 34890 PUNCH500
SWAN26B C2026 01 25.583 20 27 32 -03 17 30 34890 PUNCH500
SWAN26B C2026 01 25.750 20 27 45 -03 05 53 34890 PUNCH500
SWAN26B C2026 01 25.833 20 28 05 -03 00 52 34890 PUNCH500
SWAN26B S2026 01 25.889 20 26 48 -02 37 249
SWAN26B s2026 01 25.889 2 +0.00892625 -0.00531894 -0.00285573 249
SWAN26B C2026 01 25.89 20 28 16 -02 56 30 34764 10.5 U PUNCH500
SWAN26B C2026 01 26.083 20 28 40 -02 44 10 34890 PUNCH500
SWAN26B KC2026 01 26.150 20 28 54 -02 40 30 10.5 V 500
SWAN26B C2026 01 26.167 20 28 59 -02 40 03 34890 PUNCH500
SWAN26B C2026 01 26.250 20 29 01 -02 33 33 34890 PUNCH500
SWAN26B C2026 01 26.333 20 29 14 -02 28 07 34890 PUNCH500
SWAN26B C2026 01 26.417 20 29 34 -02 23 58 34890 PUNCH500
SWAN26B KC2026 01 26.473 20 29 42 -02 20 10 10.5 V 500
SWAN26B C2026 01 26.500 20 29 46 -02 18 09 34890 PUNCH500
SWAN26B C2026 01 26.583 20 29 56 -02 12 53 34890 PUNCH500
SWAN26B KC2026 01 26.823 20 30 37 -01 58 00 10.5 V 500
SWAN26B C2026 01 26.833 20 30 35 -01 56 36 34890 PUNCH500
SWAN26B S2026 01 26.875 20 28 24 -01 24 249
SWAN26B s2026 01 26.875 2 +0.00900693 -0.00523046 -0.00284357 249
SWAN26B C2026 01 26.917 20 30 45 -01 52 12 34890 PUNCH500
SWAN26B C2026 01 26.994 20 31 03 -01 46 12 34890 PUNCH500
SWAN26B C2026 01 27.011 20 31 12 -01 45 30 34827 10.3 V PUNCH500
SWAN26B C2026 01 27.083 20 31 15 -01 41 23 34890 PUNCH500
SWAN26B C2026 01 27.167 20 31 34 -01 35 40 34890 PUNCH500
SWAN26B C2026 01 27.250 20 31 17 -01 15 35 34890 x PUNCH500
SWAN26B C2026 01 27.311 20 31 57 -01 28 00 34827 10.3 V PUNCH500
SWAN26B C2026 01 27.333 20 31 58 -01 25 47 34890 PUNCH500
SWAN26B C2026 01 27.417 20 32 15 -01 21 43 34890 PUNCH500
SWAN26B C2026 01 27.500 20 32 27 -01 16 37 34890 PUNCH500
SWAN26B C2026 01 27.583 20 32 42 -01 10 08 34890 PUNCH500
SWAN26B C2026 01 27.623 20 32 48 -01 09 00 34794 10.4 U PUNCH500
SWAN26B S2026 01 27.875 20 32 54 -00 49 249
SWAN26B s2026 01 27.875 2 +0.00906923 -0.00515946 -0.00283433 249
SWAN26B C2026 01 27.916 20 33 36 -00 52 15 34890 PUNCH500
SWAN26B C2026 01 27.917 20 33 35 -00 52 00 34794 10.8 U PUNCH500
SWAN26B C2026 01 27.994 20 33 55 -00 48 09 34890 PUNCH500
SWAN26B C2026 01 28.006 20 33 57 -00 47 00 34827 10.4 V PUNCH500
SWAN26B C2026 01 28.350 20 34 54 -00 28 00 34827 10.4 V PUNCH500
SWAN26B C2026 01 28.556 20 35 27 -00 17 00 34827 10.4 V PUNCH500
SWAN26B C2026 01 28.861 20 36 22 +00 00 30 34827 10.6 V PUNCH500
SWAN26B S2026 01 28.875 20 35 36 +00 11 249
SWAN26B s2026 01 28.875 2 +0.00912710 -0.00509142 -0.00282584 249
SWAN26B KC2026 01 29.145 20 37 25 +00 15 10 10.7 V 500
SWAN26B KC2026 01 29.473 20 38 32 +00 31 30 10.6 V 500
SWAN26B KC2026 01 29.811 20 39 41 +00 48 30 10.6 V 500
SWAN26B S2026 01 29.862 20 38 24 +01 13 249
SWAN26B s2026 01 29.862 2 +0.00918043 -0.00502749 -0.00281839 249
SWAN26B KC2026 01 30.217 20 41 09 +01 07 30 10.7 V 500
SWAN26B KC2026 01 30.500 20 42 11 +01 19 50 10.6 V 500
SWAN26B KC2026 01 30.817 20 43 24 +01 33 50 10.7 V 500
SWAN26B S2026 01 30.862 20 40 45 +01 56 249
SWAN26B s2026 01 30.862 2 +0.00923130 -0.00496596 -0.00281179 249
SWAN26B C2026 01 31.145 20 44 42 +01 47 00 34853 10.7 V PUNCH500
SWAN26B C2026 01 31.339 20 45 32 +01 56 00 34853 10.7 V PUNCH500
SWAN26B C2026 01 31.645 20 46 45 +02 05 30 34853 10.9 V PUNCH500
SWAN26B S2026 01 31.862 20 45 18 +02 33 249
SWAN26B s2026 01 31.862 2 +0.00927952 -0.00490772 -0.00280608 249
SWAN26B C2026 01 31.923 20 48 01 +02 16 00 34853 10.8 V PUNCH500
SWAN26B C2026 02 01.150 20 49 02 +02 24 30 34853 10.8 V PUNCH500
SWAN26B C2026 02 01.222 20 49 19 +02 25 35 34880 PUNCH500
SWAN26B C2026 02 01.283 20 49 40 +02 30 36 34880 PUNCH500
SWAN26B C2026 02 01.383 20 50 03 +02 35 25 34880 x PUNCH500
SWAN26B C2026 02 01.528 20 50 50 +02 34 00 34853 11.0 V PUNCH500
SWAN26B S2026 02 01.862 20 50 42 +02 56 249
SWAN26B s2026 02 01.862 2 +0.00932564 -0.00485262 -0.00280117 249
SWAN26B C2026 02 01.911 20 52 33 +02 47 30 34853 11.2 V PUNCH500
SWAN26B C2026 02 02.139 20 53 43 +02 52 30 34902 11.0 V PUNCH500
SWAN26B C2026 02 02.284 20 54 26 +02 57 30 34902 11.0 V PUNCH500
SWAN26B C2026 02 02.478 20 55 29 +03 02 00 34902 11.3 V PUNCH500
SWAN26B C2026 02 02.617 20 56 12 +03 05 30 34902 11.2 V PUNCH500
SWAN26B C2026 02 02.761 20 56 58 +03 08 30 34902 11.4 V PUNCH500
SWAN26B S2026 02 02.862 20 55 18 +03 34 249
SWAN26B s2026 02 02.862 2 +0.00937015 -0.00480043 -0.00279688 249
SWAN26B KC2026 02 03.156 20 59 08 +03 16 50 11.8 V 500
SWAN26B KC2026 02 03.461 21 00 53 +03 22 50 11.6 V 500
SWAN26B KC2026 02 03.817 21 02 59 +03 28 40 11.9 V 500
SWAN26B S2026 02 03.862 21 02 18 +03 33 249
SWAN26B s2026 02 03.862 2 +0.00941344 -0.00475083 -0.00279303 249
SWAN26B KC2026 02 04.184 21 05 13 +03 33 40 11.8 V 500
SWAN26B KC2026 02 04.523 21 07 24 +03 38 00 11.9 V 500
SWAN26B KC2026 02 04.856 21 09 36 +03 40 50 12.1 V 500
SWAN26B S2026 02 04.862 21 09 00 +04 05 249
SWAN26B s2026 02 04.862 2 +0.00945579 -0.00470346 -0.00278942 249
SWAN26B KC2026 02 05.200 21 11 57 +03 43 10 11.9 V 500
SWAN26B KC2026 02 05.500 21 14 06 +03 44 50 11.9 V 500
SWAN26B SK260205:1858160 021.2209 +24.5232 C49
SWAN26B sK260205:1858160 2 -J0000FvOCR -J0000oceYh -J0000M0c9Z C49
SWAN26B KC2026 02 05.806 21 16 19 +03 45 40 12.1 V 500
SWAN26B S2026 02 05.875 21 15 36 +03 47 249
SWAN26B s2026 02 05.875 2 +0.00949796 -0.00465736 -0.00278577 249
SWAN26B KC2026 02 06.134 21 18 47 +03 45 50 12.0 V 500
SWAN26B KC2026 02 06.417 21 21 01 +03 45 10 12.2 V 500
SWAN26B KC2026 02 06.811 21 24 09 +03 43 30 12.2 V 500
SWAN26B KC2026 02 07.167 21 27 08 +03 41 50 12.1 V 500
SWAN26B SK260207:0658160 026.6059 +24.6877 C49
SWAN26B sK260207:0658160 2 -J0000EQDVu -J0000p38V2 -J0000MBrGF C49
SWAN26B KC2026 02 07.467 21 29 44 +03 39 10 12.4 V 500
SWAN26B KC2026 02 07.828 21 32 59 +03 35 10 12.6 V 500
SWAN26B KC2026 02 08.261 21 36 59 +03 29 00 12.5 V 500
SWAN26B KC2026 02 08.728 21 41 32 +03 21 40 12.6 V 500
SWAN26B SK260208:1858160 031.9126 +24.5107 C49
SWAN26B sK260208:1858160 2 -J0000CuCBB -J0000pRNpr -J0000MM82q C49
SWAN26B S2026 02 09.889 21 51 54 +03 35 249
SWAN26B s2026 02 09.889 2 +0.00965835 -0.00448704 -0.00276777 249
SWAN26B SK260210:0658160 037.1041 +24.0233 C49
SWAN26B sK260210:0658160 2 -J0000BNOH3 -J0000pnN3L -J0000MVPqT C49
SWAN26B S2026 02 10.889 22 01 57 +02 49 249
SWAN26B s2026 02 10.889 2 +0.00969641 -0.00444624 -0.00276164 249
SWAN26B S2026 02 11.903 22 17 30 +02 18 249
SWAN26B s2026 02 11.903 2 +0.00973399 -0.00440509 -0.00275453 249
SWAN26B S2026 02 12.917 22 33 30 +01 53 249
SWAN26B s2026 02 12.917 2 +0.00977035 -0.00436400 -0.00274644 249
SWAN26B S2026 02 13.930 22 46 12 +00 52 249
SWAN26B s2026 02 13.930 2 +0.00980529 -0.00432285 -0.00273732 249
SWAN26B S2026 02 14.987 23 05 30 -00 36 249
SWAN26B s2026 02 14.987 2 +0.00983858 -0.00428157 -0.00272714 249
Station data:
(249) SOHO. Observers Q. Zhang, R. Matson. 0.027-m f/3.78 catadioptric + PMT.
(500) Geocentric. Measurers T. Lehmann, M. Kaszczyk, Q. Zhang.
(C49) STEREO-A. Observer Q. Zhang.
Orbital elements: SWAN26B
Perihelion 2026 Jan 28.260692 +/- 0.0038999 TT = 6:15:23.7 (JD 2461068.760692)
Epoch 2026 Feb 14.0 TT = JDT 2461085.5 Earth MOID: 0.2627 Ve: 0.0448
q 0.315541200 +/- 2.6378e-5 (J2000) Gray
M(T) 16.0 K 10.0 Peri. 90.026606 +/- 0.00930
z -0.0017793054 +/- 0.0023072 Node 310.928059 +/- 0.004290
e 1.00056144 +/- 0.00072801 Incl. 80.685835 +/- 0.004687
149 of 153 observations 2026 Jan. 11-Feb. 14; mean residual 361".371/0.26 sigmas
Residuals in arcseconds: 260111 249 9.58- 7.34- 260124 500 19.3+ 39.2+ 260130 500 8.96- 8.27- 260112 249 7.94+ 5.49+ 260124 500 50.4- 32.8+ 260130 500 10.5- 15.4+ 260112 249 1.32+ 9.93+ 260124 500 41.0- 86.2+ 260130 249 1713- 538+ 260113 249 3.52- 14.6+ 260124 249 988- 229+ 260131 500 15.2- .647+ 260113 249 .149+ 4.88+ 260125 500 23.3+ 32.1+ 260131 500 20.1+ 84.0+ 260114 249 .094+ 7.28- 260125 500 30.5- 68.6- 260131 500 43.3- 36.6- 260115 249 3.12+ 12.9- 260125 500 4.13- 87.4+ 260131 249 1337- 394+ 260115 249 5.55- 9.68- 260125 500 4.51+ 30.5- 260131 500 10.4+ 2.31- 260117 249 35.4+ 347+ 260125 500 26.5+ 12.8- 260201 500 13.6+ 44.0+ 260118 249 46.8+ 705+ 260125 500 140- 28.6+ 260201 500 25.3- 33.8- 260119 500 101- 40.9+ 260125 500 21.1- 5.33+ 260201 500 38.8+ 148+ 260119 500 50.5- 8.88- 260125 249 573- 783+ 260201 500(30.9- 244+) 260119 500 61.5+ 56.2- 260125 500 18.7+ 45.2+ 260201 500 64.4+ 113- 260119 500 51.9- 100- 260126 500 48.9- 36.9+ 260201 249 631- 197- 260119 500 51.5+ 29.9- 260126 500 11.1+ 1.45- 260201 500 47.6- 19.6+ 260119 249 52.8+ 24.4+ 260126 500 47.8+ 39.9- 260202 500 17.3- 55.8- 260120 500 50.6- 10.6- 260126 500 109- 31.3+ 260202 500 34.1- 16.4+ 260120 500 92.0- 109+ 260126 500 102- 39.8+ 260202 500 9.11+ 4.99- 260120 500 30.5+ 103+ 260126 500 5.55+ 31.4- 260202 500 3.70- 5.61+ 260120 500 10.4- 19.3+ 260126 500 3.09- 16.1- 260202 500 5.68- 12.7- 260120 249 88.7+ 715- 260126 500 5.32- 2.55+ 260202 249 1127- 514+ 260121 500 9.38+ 4.43- 260126 500 47.5- 4.78+ 260203 500 9.79- 13.3- 260121 500 .501+ 12.2- 260126 500 4.35+ 1.96- 260203 500 1.33- 3.59+ 260121 500 232+ 32.6+ 260126 500 49.3- 44.8+ 260203 500 5.45- 1.01+ 260121 500 86.3+ 60.2- 260126 249 1361- 1362+ 260203 249 2.24- 708- 260121 500 13.8- 61.0+ 260126 500 99- 3.17- 260204 500 24.5- 8.45- 260121 500 69.7- 14.0+ 260126 500 13.9- 72.2+ 260204 500 4.96- 14.4+ 260121 500 4.57+ 1.97+ 260127 500 80.2+ 51.5+ 260204 500 4.60- 3.01- 260121 249 727- 300+ 260127 500 48.7- 33.7+ 260204 249 264+ 457+ 260121 500 8.91- 51.2- 260127 500 31.9+ 69.3+ 260205 500 8.20- 9.22- 260121 500 4.32+ 1.72- 260127 500( 426- 972+) 260205 500 16.3+ 2.61+ 260122 500 23.5+ 33.5- 260127 500 23.1+ 5.95+ 260205 C49 125+ 80.6+ 260122 500 123- 4.17+ 260127 500 16.3- 59.4+ 260205 500 .741+ .466+ 260122 500 18.9- 38.6+ 260127 500 29.7+ .791+ 260205 249 293- 971- 260122 500( 310+ 788+) 260127 500 1.79+ 9.42+ 260206 500 5.74- 2.99- 260122 500 66.7- 21.5- 260127 500 17.2+ 103+ 260206 500 22.3+ 19.3- 260122 500( 177- 233-) 260127 500 5.70+ 28.8+ 260206 500 13.4- 31.5- 260122 249 332- 689+ 260127 249 224+ 189- 260207 500 8.16- 2.65+ 260122 500 45.5- 20.4- 260127 500 29.7- 6.86+ 260207 C49 20.2+ 80.2+ 260122 500 37.8- 55.0+ 260127 500 47.3- 18.4+ 260207 500 1.75- 3.62- 260123 500 46.5- 12.4+ 260127 500 50.7+ 16.8- 260207 500 21.3+ 9.11- 260123 500 23.2- 25.5+ 260128 500 49.0+ 10.9+ 260208 500 1.63+ 26.1- 260123 500 56.7+ 68.5+ 260128 500 17.8- 17.1- 260208 500 17.3+ 3.12+ 260123 500 22.6+ 42.7+ 260128 500 89.8- 40.5- 260208 C49 103- 97.8+ 260123 249 122+ 1093+ 260128 500 126- 21.0+ 260209 249 1158- 1138+ 260124 500 37.1- 32.2- 260128 249 56.1- 21.1+ 260210 C49 69.8- 76.7+ 260124 500 23.6- 9.79- 260129 500 6.41- 6.47+ 260210 249 2725- 170+ 260124 500 33.6- 3.38+ 260129 500 14.6+ 14.2- 260211 249 535- 589+ 260124 500 38.9- 14.0+ 260129 500 .039+ 12.4+ 260212 249 979+ 1835+ 260124 500 73.9- 46.1+ 260129 249 496- 697+ 260213 249 1557- 1377+ 260124 500 29.3- 27.6+ 260130 500 8.96+ 11.8+ 260214 249 99+ 102- Ephemerides (geocentric): Date (UTC) RA Dec delta r elong mag " sig PA ---- ----- ------------ ------------ ------ ------ ----- --- -------- 2026 01 01 19 43 01.338 -26 56 39.61 1.7192 .79965 13.8 16.2 6.42 163 2026 01 02 19 44 43.697 -26 12 37.66 1.7035 .77842 13.1 16.0 6.14 162 2026 01 03 19 46 26.027 -25 27 39.81 1.6874 .75710 12.4 15.9 5.84 162 2026 01 04 19 48 08.339 -24 41 43.42 1.6709 .73570 11.7 15.7 5.53 161 2026 01 05 19 49 50.650 -23 54 45.70 1.6540 .71421 11.0 15.6 5.20 160 2026 01 06 19 51 32.976 -23 06 43.78 1.6366 .69266 10.4 15.4 4.85 160 2026 01 07 19 53 15.340 -22 17 34.70 1.6187 .67106 9.8 15.3 4.49 159 2026 01 08 19 54 57.766 -21 27 15.41 1.6003 .64941 9.3 15.1 4.11 158 2026 01 09 19 56 40.287 -20 35 42.81 1.5814 .62775 8.8 14.9 3.71 156 2026 01 10 19 58 22.941 -19 42 53.79 1.5618 .60609 8.4 14.8 3.29 155 2026 01 11 20 00 05.775 -18 48 45.31 1.5416 .58447 8.1 14.6 2.85 153 2026 01 12 20 01 48.850 -17 53 14.44 1.5208 .56291 7.9 14.4 2.40 150 2026 01 13 20 03 32.240 -16 56 18.54 1.4992 .54147 7.8 14.2 1.92 145 2026 01 14 20 05 16.044 -15 57 55.34 1.4768 .52020 7.9 14.0 1.45 137 2026 01 15 20 07 00.384 -14 58 03.24 1.4536 .49916 8.1 13.8 1.00 122 2026 01 16 20 08 45.420 -13 56 41.59 1.4295 .47844 8.4 13.5 .693 89 2026 01 17 20 10 31.360 -12 53 51.05 1.4044 .45813 8.9 13.3 .786 42 2026 01 18 20 12 18.471 -11 49 34.20 1.3782 .43836 9.4 13.1 1.21 17 2026 01 19 20 14 07.104 -10 43 56.15 1.3508 .41927 10.1 12.8 1.75 5 2026 01 20 20 15 57.715 -09 37 05.43 1.3222 .40103 10.8 12.6 2.32 179 2026 01 21 20 17 50.897 -08 29 15.04 1.2923 .38385 11.6 12.4 2.89 175 2026 01 22 20 19 47.420 -07 20 43.53 1.2609 .36797 12.5 12.1 3.42 172 2026 01 23 20 21 48.275 -06 11 56.21 1.2280 .35366 13.4 11.9 3.89 170 2026 01 24 20 23 54.716 -05 03 26.01 1.1937 .34120 14.3 11.7 4.27 168 2026 01 25 20 26 08.307 -03 55 53.86 1.1578 .33090 15.2 11.5 4.52 166 2026 01 26 20 28 30.951 -02 50 08.00 1.1205 .32306 16.0 11.3 4.60 164 2026 01 27 20 31 04.889 -01 47 02.03 1.0819 .31791 16.9 11.2 4.50 162 2026 01 28 20 33 52.676 -00 47 31.57 1.0422 .31565 17.6 11.0 4.20 161 2026 01 29 20 36 57.124 +00 07 30.02 1.0017 .31634 18.3 11.0 3.70 158 2026 01 30 20 40 21.219 +00 57 15.84 .96076 .31997 18.9 10.9 3.04 156 2026 01 31 20 44 08.051 +01 41 08.62 .91966 .32641 19.3 10.9 2.24 152 2026 02 01 20 48 20.758 +02 18 41.90 .87877 .33544 19.7 10.9 1.36 146 2026 02 02 20 53 02.513 +02 49 39.47 .83840 .34678 19.9 11.0 .464 126 2026 02 03 20 58 16.542 +03 13 53.17 .79880 .36015 20.0 11.0 .572 170 2026 02 04 21 04 06.159 +03 31 20.15 .76022 .37523 20.0 11.1 1.51 153 2026 02 05 21 10 34.816 +03 42 00.08 .72284 .39176 19.8 11.2 2.47 146 2026 02 06 21 17 46.140 +03 45 52.81 .68682 .40946 19.6 11.3 3.47 140 2026 02 07 21 25 43.945 +03 42 56.80 .65230 .42812 19.2 11.4 4.54 134 2026 02 08 21 34 32.207 +03 33 08.26 .61942 .44755 18.9 11.4 5.74 128 2026 02 09 21 44 14.993 +03 16 21.03 .58831 .46759 18.5 11.5 7.13 123 2026 02 10 21 54 56.313 +02 52 27.35 .55909 .48811 18.2 11.6 8.78 118 2026 02 11 22 06 39.892 +02 21 19.48 .53192 .50899 18.1 11.7 10.8 114 2026 02 12 22 19 28.841 +01 42 52.29 .50694 .53015 18.3 11.7 13.1 110 2026 02 13 22 33 25.212 +00 57 06.85 .48434 .55151 18.8 11.8 15.9 106 2026 02 14 22 48 29.459 +00 04 14.95 .46428 .57301 19.9 11.9 19.2 103 2026 02 15 23 04 39.838 -00 55 16.07 .44694 .59460 21.4 12.0 22.8 101 2026 02 16 23 21 51.837 -02 00 38.85 .43252 .61624 23.6 12.0 26.9 99 2026 02 17 23 39 57.759 -03 10 43.46 .42114 .63791 26.2 12.1 31.2 97 2026 02 18 23 58 46.621 -04 23 58.08 .41294 .65956 29.2 12.2 35.6 96 2026 02 19 00 18 04.496 -05 38 34.00 .40797 .68119 32.6 12.3 39.9 94 2026 02 20 00 37 35.346 -06 52 34.88 .40624 .70277 36.1 12.5 44.0 93 2026 02 21 00 57 02.254 -08 04 08.37 .40768 .72428 39.8 12.6 47.6 91 2026 02 22 01 16 08.839 -09 11 37.64 .41217 .74573 43.4 12.8 50.8 90 2026 02 23 01 34 40.557 -10 13 49.79 .41952 .76709 47.0 12.9 53.2 88 2026 02 24 01 52 25.653 -11 09 59.53 .42951 .78837 50.4 13.1 55.1 87 2026 02 25 02 09 15.629 -11 59 48.17 .44188 .80955 53.6 13.3 56.4 85 2026 02 26 02 25 05.250 -12 43 19.23 .45638 .83063 56.5 13.5 57.2 83 2026 02 27 02 39 52.191 -13 20 52.36 .47277 .85160 59.2 13.6 57.5 82 2026 02 28 02 53 36.493 -13 52 57.33 .49080 .87247 61.7 13.8 57.5 80 2026 03 01 03 06 19.959 -14 20 08.83 .51025 .89324 64.0 14.0 57.3 79 2026 03 02 03 18 05.592 -14 43 02.77 .53094 .91389 66.0 14.2 56.8 77 2026 03 03 03 28 57.116 -15 02 13.70 .55268 .93444 67.8 14.4 56.2 76 2026 03 04 03 38 58.614 -15 18 13.44 .57532 .95487 69.4 14.6 55.6 75 2026 03 05 03 48 14.261 -15 31 30.36 .59874 .97520 70.8 14.7 54.9 73 2026 03 06 03 56 48.145 -15 42 29.23 .62283 0.9954 72.0 14.9 54.1 72 2026 03 07 04 04 44.154 -15 51 31.41 .64748 1.0155 73.2 15.1 53.4 71 2026 03 08 04 12 05.911 -15 58 55.07 .67261 1.0355 74.1 15.3 52.6 70 2026 03 09 04 18 56.747 -16 04 55.65 .69815 1.0554 75.0 15.4 51.9 69 2026 03 10 04 25 19.691 -16 09 46.13 .72404 1.0752 75.7 15.6 51.2 68 2026 03 11 04 31 17.481 -16 13 37.48 .75023 1.0949 76.4 15.7 50.5 67 2026 03 12 04 36 52.577 -16 16 38.92 .77668 1.1144 77.0 15.9 49.9 66 2026 03 13 04 42 07.187 -16 18 58.21 .80334 1.1339 77.4 16.0 49.2 65 2026 03 14 04 47 03.282 -16 20 41.93 .83018 1.1533 77.9 16.2 48.6 65 2026 03 15 04 51 42.624 -16 21 55.62 .85717 1.1725 78.2 16.3 48.1 64 2026 03 16 04 56 06.788 -16 22 43.98 .88429 1.1917 78.5 16.5 47.5 63 2026 03 17 05 00 17.178 -16 23 11.03 .91152 1.2108 78.7 16.6 47.0 62 2026 03 18 05 04 15.049 -16 23 20.19 .93883 1.2298 78.9 16.7 46.5 62 2026 03 19 05 08 01.524 -16 23 14.39 .96621 1.2486 79.0 16.9 46.1 61 2026 03 20 05 11 37.605 -16 22 56.16 0.9936 1.2674 79.1 17.0 45.6 61 2026 03 21 05 15 04.190 -16 22 27.67 1.0211 1.2861 79.2 17.1 45.2 60 2026 03 22 05 18 22.085 -16 21 50.80 1.0486 1.3047 79.2 17.2 44.8 60 2026 03 23 05 21 32.012 -16 21 07.16 1.0762 1.3232 79.2 17.3 44.4 59 2026 03 24 05 24 34.620 -16 20 18.15 1.1037 1.3416 79.2 17.5 44.1 59 2026 03 25 05 27 30.494 -16 19 24.98 1.1313 1.3600 79.2 17.6 43.7 58 2026 03 26 05 30 20.164 -16 18 28.69 1.1588 1.3782 79.1 17.7 43.4 58 2026 03 27 05 33 04.106 -16 17 30.17 1.1863 1.3964 79.0 17.8 43.0 57 2026 03 28 05 35 42.754 -16 16 30.21 1.2138 1.4145 78.8 17.9 42.7 57 2026 03 29 05 38 16.503 -16 15 29.48 1.2413 1.4325 78.7 18.0 42.4 56 2026 03 30 05 40 45.711 -16 14 28.57 1.2688 1.4504 78.5 18.1 42.1 56 2026 03 31 05 43 10.705 -16 13 28.00 1.2962 1.4682 78.4 18.2 41.8 56 2026 04 01 05 45 31.785 -16 12 28.24 1.3237 1.4860 78.2 18.3 41.6 55 2026 04 02 05 47 49.225 -16 11 29.69 1.3510 1.5037 78.0 18.4 41.3 55 2026 04 03 05 50 03.276 -16 10 32.72 1.3784 1.5213 77.7 18.5 41.1 55 2026 04 04 05 52 14.168 -16 09 37.66 1.4056 1.5388 77.5 18.6 40.8 54 2026 04 05 05 54 22.113 -16 08 44.82 1.4329 1.5563 77.3 18.7 40.6 54 2026 04 06 05 56 27.306 -16 07 54.47 1.4601 1.5737 77.0 18.8 40.3 54 2026 04 07 05 58 29.926 -16 07 06.87 1.4872 1.5910 76.8 18.8 40.1 53 2026 04 08 06 00 30.139 -16 06 22.24 1.5143 1.6082 76.5 18.9 39.9 53 2026 04 09 06 02 28.096 -16 05 40.82 1.5414 1.6254 76.2 19.0 39.7 53 2026 04 10 06 04 23.937 -16 05 02.80 1.5683 1.6425 75.9 19.1 39.5 52 2026 04 11 06 06 17.794 -16 04 28.36 1.5953 1.6596 75.6 19.2 39.3 52 2026 04 12 06 08 09.785 -16 03 57.70 1.6221 1.6765 75.3 19.3 39.1 52 2026 04 13 06 10 00.021 -16 03 30.96 1.6489 1.6934 75.0 19.3 38.9 52 2026 04 14 06 11 48.606 -16 03 08.32 1.6757 1.7103 74.7 19.4 38.7 51 2026 04 15 06 13 35.633 -16 02 49.93 1.7024 1.7271 74.3 19.5 38.5 51 2026 04 16 06 15 21.191 -16 02 35.92 1.7290 1.7438 74.0 19.6 38.3 51 2026 04 17 06 17 05.360 -16 02 26.43 1.7555 1.7604 73.7 19.6 38.1 51 2026 04 18 06 18 48.214 -16 02 21.60 1.7820 1.7770 73.3 19.7 38.0 50 2026 04 19 06 20 29.821 -16 02 21.54 1.8084 1.7936 73.0 19.8 37.8 50 2026 04 20 06 22 10.244 -16 02 26.35 1.8347 1.8100 72.7 19.9 37.6 50 2026 04 21 06 23 49.539 -16 02 36.11 1.8609 1.8264 72.3 19.9 37.4 50 2026 04 22 06 25 27.760 -16 02 50.91 1.8871 1.8428 71.9 20.0 37.3 49 2026 04 23 06 27 04.955 -16 03 10.80 1.9132 1.8591 71.6 20.1 37.1 49 2026 04 24 06 28 41.172 -16 03 35.81 1.9392 1.8753 71.2 20.1 37.0 49 2026 04 25 06 30 16.453 -16 04 05.98 1.9651 1.8915 70.9 20.2 36.8 49 2026 04 26 06 31 50.840 -16 04 41.34 1.9910 1.9077 70.5 20.3 36.7 48 2026 04 27 06 33 24.370 -16 05 21.90 2.0167 1.9237 70.1 20.3 36.5 48 2026 04 28 06 34 57.082 -16 06 07.67 2.0424 1.9398 69.8 20.4 36.4 48 2026 04 29 06 36 29.010 -16 06 58.68 2.0680 1.9557 69.4 20.5 36.2 48 2026 04 30 06 38 00.186 -16 07 54.92 2.0935 1.9716 69.0 20.5 36.1 47 2026 05 01 06 39 30.644 -16 08 56.41 2.1189 1.9875 68.6 20.6 35.9 47 2026 05 02 06 41 00.412 -16 10 03.15 2.1443 2.0033 68.3 20.6 35.8 47 2026 05 03 06 42 29.519 -16 11 15.17 2.1695 2.0191 67.9 20.7 35.7 47 2026 05 04 06 43 57.992 -16 12 32.47 2.1947 2.0348 67.5 20.8 35.5 46 2026 05 05 06 45 25.856 -16 13 55.06 2.2197 2.0505 67.1 20.8 35.4 46 2026 05 06 06 46 53.136 -16 15 22.96 2.2447 2.0661 66.8 20.9 35.3 46 2026 05 07 06 48 19.855 -16 16 56.19 2.2696 2.0817 66.4 20.9 35.1 46 2026 05 08 06 49 46.033 -16 18 34.77 2.2944 2.0972 66.0 21.0 35.0 45 2026 05 09 06 51 11.691 -16 20 18.71 2.3191 2.1127 65.6 21.0 34.9 45 2026 05 10 06 52 36.848 -16 22 08.04 2.3437 2.1281 65.2 21.1 34.8 45 2026 05 11 06 54 01.523 -16 24 02.77 2.3682 2.1435 64.8 21.1 34.6 44 2026 05 12 06 55 25.731 -16 26 02.95 2.3926 2.1588 64.5 21.2 34.5 44 2026 05 13 06 56 49.488 -16 28 08.58 2.4169 2.1741 64.1 21.3 34.4 44 2026 05 14 06 58 12.810 -16 30 19.70 2.4411 2.1893 63.7 21.3 34.3 44 2026 05 15 06 59 35.708 -16 32 36.33 2.4652 2.2045 63.3 21.4 34.2 43 2026 05 16 07 00 58.195 -16 34 58.52 2.4892 2.2197 62.9 21.4 34.1 43 2026 05 17 07 02 20.281 -16 37 26.27 2.5131 2.2348 62.5 21.5 33.9 43 2026 05 18 07 03 41.974 -16 39 59.61 2.5369 2.2499 62.2 21.5 33.8 43 2026 05 19 07 05 03.283 -16 42 38.54 2.5606 2.2649 61.8 21.6 33.7 42 2026 05 20 07 06 24.214 -16 45 23.08 2.5841 2.2799 61.4 21.6 33.6 42 2026 05 21 07 07 44.775 -16 48 13.22 2.6076 2.2949 61.0 21.7 33.5 42 2026 05 22 07 09 04.970 -16 51 08.93 2.6310 2.3098 60.6 21.7 33.4 42 2026 05 23 07 10 24.806 -16 54 10.21 2.6542 2.3247 60.3 21.7 33.3 41 2026 05 24 07 11 44.289 -16 57 17.03 2.6773 2.3395 59.9 21.8 33.2 41 2026 05 25 07 13 03.424 -17 00 29.37 2.7004 2.3543 59.5 21.8 33.1 41 2026 05 26 07 14 22.219 -17 03 47.20 2.7233 2.3690 59.1 21.9 33.0 40 2026 05 27 07 15 40.677 -17 07 10.50 2.7461 2.3837 58.8 21.9 32.9 40 2026 05 28 07 16 58.806 -17 10 39.25 2.7688 2.3984 58.4 22.0 32.8 40 2026 05 29 07 18 16.612 -17 14 13.43 2.7913 2.4130 58.0 22.0 32.8 39 2026 05 30 07 19 34.099 -17 17 53.01 2.8138 2.4276 57.7 22.1 32.7 39 2026 05 31 07 20 51.274 -17 21 37.99 2.8361 2.4422 57.3 22.1 32.6 39 2026 06 01 07 22 08.142 -17 25 28.34 2.8583 2.4567 56.9 22.1 32.5 39 2026 06 02 07 23 24.707 -17 29 24.05 2.8804 2.4712 56.6 22.2 32.4 38 2026 06 03 07 24 40.977 -17 33 25.12 2.9024 2.4857 56.2 22.2 32.3 38 2026 06 04 07 25 56.954 -17 37 31.53 2.9243 2.5001 55.9 22.3 32.3 38 2026 06 05 07 27 12.644 -17 41 43.27 2.9460 2.5145 55.5 22.3 32.2 37 2026 06 06 07 28 28.051 -17 46 00.35 2.9677 2.5288 55.1 22.4 32.1 37 2026 06 07 07 29 43.179 -17 50 22.76 2.9892 2.5431 54.8 22.4 32.0 37 2026 06 08 07 30 58.032 -17 54 50.50 3.0105 2.5574 54.4 22.4 32.0 36 2026 06 09 07 32 12.614 -17 59 23.58 3.0318 2.5716 54.1 22.5 31.9 36 2026 06 10 07 33 26.927 -18 04 01.99 3.0529 2.5858 53.8 22.5 31.8 36 2026 06 11 07 34 40.974 -18 08 45.75 3.0739 2.6000 53.4 22.6 31.8 35 2026 06 12 07 35 54.757 -18 13 34.87 3.0948 2.6142 53.1 22.6 31.7 35 2026 06 13 07 37 08.278 -18 18 29.34 3.1156 2.6283 52.7 22.6 31.7 35 2026 06 14 07 38 21.536 -18 23 29.19 3.1362 2.6423 52.4 22.7 31.6 34 2026 06 15 07 39 34.533 -18 28 34.39 3.1567 2.6564 52.1 22.7 31.5 34 2026 06 16 07 40 47.268 -18 33 44.97 3.1771 2.6704 51.8 22.7 31.5 34 2026 06 17 07 41 59.738 -18 39 00.89 3.1973 2.6844 51.4 22.8 31.4 33 2026 06 18 07 43 11.944 -18 44 22.15 3.2174 2.6983 51.1 22.8 31.4 33 2026 06 19 07 44 23.884 -18 49 48.72 3.2374 2.7122 50.8 22.8 31.4 33 2026 06 20 07 45 35.557 -18 55 20.58 3.2572 2.7261 50.5 22.9 31.3 32 2026 06 21 07 46 46.962 -19 00 57.69 3.2769 2.7400 50.2 22.9 31.3 32 2026 06 22 07 47 58.099 -19 06 40.03 3.2965 2.7538 49.9 23.0 31.2 31 2026 06 23 07 49 08.968 -19 12 27.56 3.3159 2.7676 49.6 23.0 31.2 31 2026 06 24 07 50 19.568 -19 18 20.26 3.3352 2.7814 49.3 23.0 31.2 31 2026 06 25 07 51 29.899 -19 24 18.11 3.3544 2.7951 49.0 23.1 31.1 30 2026 06 26 07 52 39.962 -19 30 21.06 3.3734 2.8088 48.7 23.1 31.1 30 2026 06 27 07 53 49.757 -19 36 29.11 3.3923 2.8225 48.4 23.1 31.1 30 2026 06 28 07 54 59.285 -19 42 42.23 3.4110 2.8362 48.2 23.2 31.1 29 2026 06 29 07 56 08.546 -19 49 00.39 3.4296 2.8498 47.9 23.2 31.0 29 2026 06 30 07 57 17.540 -19 55 23.59 3.4481 2.8634 47.6 23.2 31.0 28 2026 07 01 07 58 26.269 -20 01 51.80 3.4665 2.8769 47.4 23.3 31.0 28 2026 07 02 07 59 34.731 -20 08 25.01 3.4847 2.8905 47.1 23.3 31.0 28 2026 07 03 08 00 42.928 -20 15 03.21 3.5027 2.9040 46.9 23.3 31.0 27 2026 07 04 08 01 50.861 -20 21 46.39 3.5206 2.9175 46.6 23.3 31.0 27 2026 07 05 08 02 58.528 -20 28 34.55 3.5384 2.9309 46.4 23.4 31.0 27 2026 07 06 08 04 05.931 -20 35 27.67 3.5561 2.9443 46.1 23.4 31.0 26 2026 07 07 08 05 13.069 -20 42 25.76 3.5736 2.9577 45.9 23.4 31.0 26 2026 07 08 08 06 19.941 -20 49 28.81 3.5909 2.9711 45.7 23.5 31.0 25 2026 07 09 08 07 26.547 -20 56 36.83 3.6081 2.9845 45.5 23.5 31.0 25 2026 07 10 08 08 32.886 -21 03 49.81 3.6252 2.9978 45.3 23.5 31.0 25 2026 07 11 08 09 38.955 -21 11 07.75 3.6421 3.0111 45.0 23.6 31.0 24 2026 07 12 08 10 44.754 -21 18 30.66 3.6589 3.0244 44.8 23.6 31.0 24 2026 07 13 08 11 50.278 -21 25 58.53 3.6755 3.0376 44.7 23.6 31.0 23 2026 07 14 08 12 55.526 -21 33 31.34 3.6920 3.0508 44.5 23.6 31.0 23 2026 07 15 08 14 00.493 -21 41 09.09 3.7084 3.0640 44.3 23.7 31.1 23 2026 07 16 08 15 05.176 -21 48 51.76 3.7245 3.0772 44.1 23.7 31.1 22 2026 07 17 08 16 09.572 -21 56 39.31 3.7406 3.0903 43.9 23.7 31.1 22 2026 07 18 08 17 13.676 -22 04 31.72 3.7565 3.1034 43.8 23.8 31.2 21 2026 07 19 08 18 17.487 -22 12 28.95 3.7722 3.1165 43.6 23.8 31.2 21 RA/decs are astrometric J2000 coordinates (corrected for light time lag, but in the inertial J2000 frame, i.e., not rotated for precession or nutation, and differential light deflection is not included.) Display can be turned on/off in the 'advanced options' for ephemerides. When turning them on, you can select from various format choices (base-60, decimal, different precisions, etc.) Distances are in kilometers for distances under one million km (about 0.00668 AU), and in AUs for larger distances. Uncertainties are one-sigma values shown in arcseconds (unless they are very large, in which case they are shown in arcminutes or degrees). In theory, the object should be within this distance of the nominal RA/dec 67% of the time, within twice that distance 95% of the time, and within three times that distance 99.7% of the time. In practice, astrometric errors are not actually Gaussian, which means these uncertainties are sometimes over- or underestimated. So you may have to look farther, or not nearly as far, as the uncertainties say. The object will probably be offset from nominal somewhere along the indicated position angle, especially if the orbit is well determined.