"Pseudo-MPEC" for ZTs0274 = ZTs0271 = A11a8W6
Created 2024 Sep 1 13:08:58 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
Astrometry:
A11a8W6* C2024 08 24.11571421 43 15.451+00 31 00.16 ~8RHj 16.89oVNEOCPW68
A11a8W6 C2024 08 24.13618821 46 53.861+00 53 58.96 ~8RHj 17.11oVNEOCPW68
A11a8W6 C2024 08 24.14083621 47 43.591+00 59 19.21 ~8RHj 16.77oVNEOCPW68
ZTs0271* C2024 08 31.31039222 20 26.237-02 19 20.05 ~8VEc 17.38gUNEOCPI41
ZTs0271 C2024 08 31.31073922 20 30.438-02 19 02.71 ~8VEc 17.38gUNEOCPI41
ZTs0271 C2024 08 31.36601322 32 25.647-01 27 40.27 ~8VEc 16.82RUNEOCPI41
ZTs0271 C2024 08 31.36636322 32 30.445-01 27 20.28 ~8VEc 16.82RUNEOCPI41
ZTs0274* C2024 09 01.27946122 12 20.803-02 52 00.60 ~91CR 17.63RUNEOCPI41
ZTs0274 C2024 09 01.27980822 12 24.795-02 51 42.40 ~91CR 17.63RUNEOCPI41
ZTs0274 C2024 09 01.27993022 12 26.262-02 51 35.66 ~91CR 17.06RUNEOCPI41
ZTs0274 C2024 09 01.28027822 12 30.224-02 51 17.32 ~91CR 17.06RUNEOCPI41
Station data:
(I41) Palomar Mountain--ZTF (N33.357336 W116.859780) US/California.
Observers B. T. Bolin, Z. T. F. Collaboration. Measurers B. T. Bolin,
Z.-Y. Lin, F. J. Masci. 1.2-m f/2.4 Schmidt.
(W68) ATLAS Chile, Rio Hurtado (S30.471010 W70.764980) Chile. Observers L.
Denneau, R. Siverd, J. Tonry, H. Weiland. Measurers L. Denneau, N.
Erasmus, A. Fitzsimmons, A. Lawrence, J. Robinson, R. Siverd, J. Tonry, H.
Weiland. 0.5-m reflector + CCD.
Orbital elements: ZTs0274 = ZTs0271 = A11a8W6
Perigee 2024 Aug 30.681593 +/- 0.000844 TT = 16:21:29.6 (JD 2460553.181593)
A1: (170.65 +/- 2.27)e-7 A2: (20.26 +/- 6.76)e-8
A3: (-125.9 +/- 5.2)e-8 AU/day^2 [1/r^2]
Epoch 2024 Aug 31.0 TT = JDT 2460553.5 Find_Orb
M 113.221337075 +/- 0.30 (J2000 equator)
n 355.586447502 +/- 0.0267 Peri. 173.962514 +/- 0.053
a 42589.90839 +/- 2.13 Node 332.357842 +/- 0.0031
e 0.78350298 +/- 0.000356 Incl. 12.488108 +/- 0.011
P1457.846m/1.012d H 33.43 G 0.15 U 10.3
q 9220.587954 +/- 15.4 Q 75959.22883 +/- 13.2
From 11 observations 2024 Aug. 24-Sept. 1; mean residual 1".209
Residuals in arcseconds: 240824 W68 2.75- 1.84- 240831 I41 1.19- 1.34- 240901 I41 .127+ .308+ 240824 W68 0.99- 6.0m- 240831 I41 .976+ .140- 240901 I41 .728+ .518+ 240824 W68 3.18+ 1.38+ 240831 I41 .393+ .012+ 240901 I41 .901- .230+ 240831 I41 .439- .367+ 240901 I41 1.12+ .681+ Ephemerides (geocentric): Date (UTC) HH RA Dec delta r elong mag " sig PA ---- -------- ------------ ------------ ------ ------ ----- --- -------- 2024 09 01 00 20 48 32.133 -04 17 31.03 67303 1.0097 151.7 18.0 137 85 2024 09 01 01 21 02 22.747 -03 35 04.67 70535 1.0097 154.9 18.0 98.5 86 2024 09 01 02 21 15 08.168 -02 55 16.00 72976 1.0097 157.8 18.0 69.1 87 2024 09 01 03 21 27 10.792 -02 17 11.40 74670 1.0097 160.5 17.9 46.4 87 2024 09 01 04 21 38 47.635 -01 40 07.88 75646 1.0097 163.0 17.9 28.9 88 2024 09 01 05 21 50 12.830 -01 03 28.15 75921 1.0097 165.2 17.8 15.6 87 2024 09 01 06 22 01 39.286 -00 26 37.11 75499 1.0097 167.3 17.7 6.41 78 2024 09 01 07 22 13 20.036 +00 11 01.29 74374 1.0097 168.9 17.6 2.95 16 2024 09 01 08 22 25 29.617 +00 50 07.31 72527 1.0097 170.0 17.5 5.39 177 2024 09 01 09 22 38 25.843 +01 31 29.70 69927 1.0096 170.3 17.4 10.1 23 2024 09 01 10 22 52 32.542 +02 16 11.97 66524 1.0096 169.3 17.4 21.8 47 2024 09 01 11 23 08 24.405 +03 05 42.96 62247 1.0096 167.1 17.3 45.3 59 2024 09 01 12 23 26 56.617 +04 02 16.12 56994 1.0095 163.7 17.2 88.5 66 2024 09 01 13 23 49 46.622 +05 09 28.15 50612 1.0094 158.8 17.1 169 71 2024 09 01 14 00 20 12.121 +06 33 43.12 42869 1.0094 151.8 17.0 331 75 2024 09 01 15 01 06 28.436 +08 27 18.08 33388 1.0093 140.8 16.7 729 78 2024 09 01 16 02 38 51.996 +11 07 08.08 21580 1.0092 118.5 16.4 2221 84 2024 09 01 17 08 42 47.277 +04 28 37.74 9502 1.0090 30.3 20?? 231' 101 2024 09 01 18 16 30 14.855 -11 58 17.77 19171 1.0091 88.3 17.2 3757 90 2024 09 01 19 18 21 27.953 -10 06 49.69 31449 1.0092 115.2 17.4 1362 85 2024 09 01 20 19 12 53.421 -08 25 16.55 41297 1.0092 127.7 17.6 740 84 2024 09 01 21 19 45 33.952 -07 06 55.03 49314 1.0093 135.7 17.7 471 84 2024 09 01 22 20 09 37.782 -06 03 22.99 55914 1.0093 141.5 17.8 323 84 2024 09 01 23 20 28 55.891 -05 09 23.11 61349 1.0094 146.1 17.9 230 85 2024 09 02 00 20 45 18.697 -04 21 45.96 65785 1.0094 150.1 18.0 167 85 2024 09 02 01 20 59 47.394 -03 38 31.63 69330 1.0094 153.5 18.0 120 86 2024 09 02 02 21 12 59.786 -02 58 18.86 72061 1.0094 156.5 18.0 85.4 87 2024 09 02 03 21 25 21.441 -02 20 08.67 74031 1.0095 159.3 17.9 58.6 88 2024 09 02 04 21 37 11.175 -01 43 15.15 75275 1.0095 161.9 17.9 37.8 88 2024 09 02 05 21 48 44.089 -01 06 59.75 75813 1.0095 164.3 17.8 21.8 88 2024 09 02 06 22 00 13.486 -00 30 47.38 75653 1.0095 166.5 17.7 10.2 82 2024 09 02 07 22 11 52.297 +00 05 56.74 74795 1.0094 168.4 17.7 3.79 41 2024 09 02 08 22 23 54.426 +00 43 50.17 73224 1.0094 169.8 17.5 5.40 172 2024 09 02 09 22 36 36.334 +01 23 36.95 70912 1.0094 170.5 17.5 9.21 8 2024 09 02 10 22 50 19.343 +02 06 12.76 67820 1.0094 170.1 17.4 17.8 35 2024 09 02 11 23 05 33.526 +02 52 53.30 63884 1.0093 168.3 17.3 36.9 53 2024 09 02 12 23 23 05.105 +03 45 28.89 59016 1.0093 165.4 17.2 73.0 62 2024 09 02 13 23 44 12.334 +04 46 52.70 53085 1.0092 161.0 17.2 140 69 2024 09 02 14 00 11 25.007 +06 01 59.76 45895 1.0092 154.9 17.0 269 73 2024 09 02 15 00 50 25.351 +07 39 56.55 37136 1.0091 145.7 16.8 561 77 2024 09 02 16 01 58 45.034 +09 56 48.53 26303 1.0090 129.2 16.6 1451 82 2024 09 02 17 05 14 51.072 +11 17 55.54 13177 1.0088 81.8 16.7 7094 93 2024 09 02 18 14 54 32.622 -11 10 05.18 14039 1.0088 64.2 17.8 7372 94 2024 09 02 19 17 52 42.276 -10 36 51.23 27095 1.0089 107.3 17.3 1977 87 2024 09 02 20 18 58 17.965 -08 45 36.79 37767 1.0090 123.2 17.5 967 85 2024 09 02 21 19 36 27.820 -07 20 12.06 46405 1.0090 132.5 17.7 589 85 2024 09 02 22 20 03 19.599 -06 12 24.13 53497 1.0091 139.1 17.8 395 85 2024 09 02 23 20 24 17.153 -05 15 46.60 59344 1.0091 144.1 17.9 279 85 2024 09 03 00 20 41 44.376 -04 26 31.09 64138 1.0091 148.3 18.0 201 86 2024 09 03 01 20 56 57.163 -03 42 16.76 68007 1.0092 151.9 18.0 146 86 2024 09 03 02 21 10 40.660 -03 01 30.71 71036 1.0092 155.1 18.0 104 87 2024 09 03 03 21 23 24.411 -02 23 07.33 73287 1.0092 158.1 18.0 72.8 88 2024 09 03 04 21 35 29.483 -01 46 16.98 74800 1.0092 160.8 17.9 48.3 88 2024 09 03 05 21 47 12.230 -01 10 19.24 75601 1.0092 163.3 17.9 29.3 88 2024 09 03 06 21 58 46.557 -00 34 38.55 75704 1.0092 165.6 17.8 15.1 85 2024 09 03 07 22 10 25.482 +00 01 19.15 75109 1.0092 167.7 17.7 5.81 61 2024 09 03 08 22 22 22.489 +00 38 09.38 73809 1.0092 169.4 17.6 5.26 176 2024 09 03 09 22 34 52.987 +01 16 32.42 71781 1.0092 170.5 17.5 8.94 176 2024 09 03 10 22 48 16.293 +01 57 17.70 68989 1.0091 170.6 17.4 15.2 21 2024 09 03 11 23 02 58.806 +02 41 30.46 65381 1.0091 169.4 17.3 30.0 44 2024 09 03 12 23 19 39.786 +03 30 43.04 60878 1.0091 166.9 17.3 60.0 58 2024 09 03 13 23 39 23.203 +04 27 15.83 55369 1.0090 163.0 17.2 116 66 2024 09 03 14 00 04 05.466 +05 34 59.38 48687 1.0089 157.6 17.1 221 71 2024 09 03 15 00 37 53.085 +07 00 44.51 40573 1.0089 149.7 16.9 443 75 2024 09 03 16 01 31 48.641 +08 57 07.23 30610 1.0088 136.8 16.7 1029 80 2024 09 03 17 03 32 26.978 +11 22 28.94 18244 1.0086 107.6 16.4 3640 87 2024 09 03 18 11 47 17.701 -04 50 32.88 10021 1.0085 18.5 24?? 245' 101 2024 09 03 19 17 11 12.345 -11 06 45.32 22392 1.0086 96.2 17.3 3086 88 2024 09 03 20 18 39 54.856 -09 09 43.82 33964 1.0087 117.8 17.4 1296 85 2024 09 03 21 19 25 38.991 -07 35 52.53 43284 1.0087 128.9 17.6 743 85 2024 09 03 22 19 56 04.293 -06 22 54.60 50907 1.0088 136.4 17.8 485 85 2024 09 03 23 20 19 02.559 -05 23 07.54 57191 1.0088 141.9 17.9 337 85 2024 09 04 00 20 37 45.811 -04 31 53.63 62361 1.0089 146.5 17.9 242 86 2024 09 04 01 20 53 49.782 -03 46 25.65 66563 1.0089 150.3 18.0 175 87 2024 09 04 02 21 08 09.115 -03 04 56.23 69898 1.0089 153.7 18.0 126 87 2024 09 04 03 21 21 18.371 -02 26 11.57 72435 1.0089 156.8 18.0 89.2 88 2024 09 04 04 21 33 41.424 -01 49 17.33 74221 1.0090 159.6 17.9 60.5 88 2024 09 04 05 21 45 36.219 -01 13 30.60 75287 1.0090 162.2 17.9 38.2 88 2024 09 04 06 21 57 17.489 -00 38 14.81 75651 1.0090 164.7 17.8 21.1 86 2024 09 04 07 22 08 58.532 -00 02 56.13 75319 1.0090 166.9 17.7 9.09 72 2024 09 04 08 22 20 52.611 +00 32 59.50 74286 1.0089 168.9 17.6 5.17 10 2024 09 04 09 22 33 14.345 +01 10 09.45 72535 1.0089 170.3 17.5 8.81 168 2024 09 04 10 22 46 21.453 +01 49 18.11 70036 1.0089 170.9 17.4 13.8 8 2024 09 04 11 23 00 37.392 +02 31 22.38 66744 1.0089 170.3 17.3 24.9 34 2024 09 04 12 23 16 35.959 +03 17 40.51 62590 1.0088 168.2 17.3 49.1 52 2024 09 04 13 23 35 10.294 +04 10 07.87 57478 1.0088 164.8 17.2 95.4 62 2024 09 04 14 23 57 52.854 +05 11 47.48 51264 1.0087 160.0 17.1 182 69 2024 09 04 15 00 27 47.315 +06 27 53.39 43733 1.0086 153.1 17.0 355 74 2024 09 04 16 01 12 18.062 +08 07 56.88 34541 1.0086 142.5 16.8 769 78 2024 09 04 17 02 36 42.252 +10 23 41.59 23152 1.0084 122.1 16.5 2197 84 2024 09 04 18 07 29 27.400 +07 17 35.70 10560 1.0083 50.9 18?? 214' 98 2024 09 04 19 16 05 13.649 -11 17 00.98 17400 1.0083 79.3 17.4 5388 91 2024 09 04 20 18 15 54.736 -09 37 57.27 29863 1.0084 111.0 17.4 1802 86 2024 09 04 21 19 12 35.301 -07 54 26.26 39937 1.0085 124.8 17.6 950 85 2024 09 04 22 19 47 38.621 -06 35 12.40 48136 1.0085 133.4 17.7 597 85 2024 09 04 23 20 13 05.421 -05 31 37.12 54885 1.0086 139.6 17.9 407 86 2024 09 05 00 20 33 19.112 -04 38 01.20 60449 1.0086 144.5 17.9 290 86 2024 09 05 01 20 50 22.729 -03 51 04.00 64998 1.0086 148.6 18.0 210 87 2024 09 05 02 21 05 23.363 -03 08 40.06 68647 1.0087 152.2 18.0 152 87 2024 09 05 03 21 19 01.947 -02 29 25.45 71475 1.0087 155.4 18.0 108 88 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.