"Pseudo-MPEC" for 2020 GL2 = BepiColombo
Created 2020 Apr 13 16:04:41 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
TLEs are available for this object, and for some of the other objects on these pages. Note that the TLEs in question are in a non-standard format. (TLEs will not, in the ordinary run of things, work with a hyperbolic flyby.)
This pseudo-MPEC includes data from the discovery MPEC, plus two observations sent in by Nick James from (970) Chelsmford. Note that the MPC has 'deleted' 2020 GL2 after realizing it's not actually a rock.
The data are good enough to show that the spacecraft will indeed go by Venus on 2020 October 15, though by a much larger 'miss' distance than is actually planned. The next flyby is of Venus again on 2021 August 11; the data (at least thus far) don't constrain the orbit that far out. (And there may be a maneuver planned/required in between.)
Astrometry:
K20G02L*KC2020 04 10.88313709 17 28.49 +02 43 20.8 15.0 GVEG096Z80
K20G02L KC2020 04 10.88603009 17 19.51 +02 44 05.1 14.9 GVEG096Z80
K20G02L KC2020 04 10.88892409 17 10.63 +02 44 49.2 15.0 GVEG096Z80
K20G02L KC2020 04 10.89181809 17 01.84 +02 45 32.8 14.9 GVEG096Z80
K20G02L KC2020 04 11.88931709 03 13.31 +04 36 21.0 16.9 GVEG096Z80
K20G02L KC2020 04 11.89394709 03 09.34 +04 36 33.6 16.9 GVEG096Z80
K20G02L KC2020 04 11.89857609 03 05.51 +04 36 45.1 16.7 GVEG096Z80
2018-080A CK200411:215032 135.72968 +04.61929 16.4 RV 970
2018-080A CK200411:215817 135.71197 +04.62304 16.6 RV 970
K20G02L C2020 04 12.28225309 01 23.758+05 04 52.27 17.16GVEG096F52
K20G02L C2020 04 12.30618409 01 02.578+05 05 25.31 17.23GVEG096F52
K20G02L C2020 04 12.31743809 00 53.029+05 05 39.57 17.26GVEG096F52
K20G02L C2020 04 13.17506 08 58 34.71 +05 18 20.7 17.9 GVEG096703
K20G02L C2020 04 13.18031 08 58 31.95 +05 18 24.5 17.9 GVEG096703
K20G02L C2020 04 13.18557 08 58 29.24 +05 18 28.0 18.2 GVEG096703
K20G02L C2020 04 13.22944 08 58 13.64 +05 16 33.6 17.9 rEG096718
K20G02L C2020 04 13.23123 08 58 12.87 +05 16 34.9 17.7 rEG096718
K20G02L C2020 04 13.23300 08 58 12.17 +05 16 35.2 17.6 rEG096718
K20G02L C2020 04 13.23478 08 58 11.44 +05 16 36.9 17.4 rEG096718
K20G02L C2020 04 13.23656 08 58 10.72 +05 16 37.6 17.4 rEG096718
K20G02L C2020 04 13.23833 08 58 10.00 +05 16 38.9 17.5 rEG096718
K20G02L C2020 04 13.25072 08 57 59.18 +05 19 03.9 17.9 GVEG096703
K20G02L C2020 04 13.25223 08 57 58.59 +05 19 04.2 17.8 GVEG096703
K20G02L C2020 04 13.25378 08 57 57.96 +05 19 05.1 17.8 GVEG096703
K20G02L C2020 04 13.25535 08 57 57.38 +05 19 05.9 17.7 GVEG096703
K20G02L C2020 04 13.26934 08 57 52.23 +05 19 11.2 17.8 GVEG096I52
K20G02L C2020 04 13.27495 08 57 50.33 +05 19 12.9 VEG096I52
K20G02L C2020 04 13.27510 08 57 50.23 +05 19 13.4 17.7 GVEG096I52
K20G02L C2020 04 13.28071 08 57 48.36 +05 19 15.5 17.8 GVEG096I52
K20G02L KC2020 04 13.39418 08 58 03.14 +05 42 39.8 16.8 RqEG096E94
K20G02L KC2020 04 13.40092 08 58 00.17 +05 42 40.6 16.8 RqEG096E94
K20G02L KC2020 04 13.40555 08 57 58.30 +05 42 41.7 17.9 VqEG096E94
K20G02L KC2020 04 13.40727 08 57 57.51 +05 42 41.5 16.8 RqEG096E94
K20G02L KC2020 04 13.41442 08 57 54.61 +05 42 42.7 16.8 RqEG096E94
K20G02L KC2020 04 13.41592 08 57 53.99 +05 42 42.8 17.9 VqEG096E94
K20G02L KC2020 04 13.42096 08 57 51.93 +05 42 43.4 16.8 RqEG096E94
K20G02L KC2020 04 13.42629 08 57 49.85 +05 42 44.0 18.0 VqEG096E94
K20G02L KC2020 04 13.42773 08 57 49.30 +05 42 43.1 16.9 RqEG096E94
K20G02L KC2020 04 13.43492 08 57 46.56 +05 42 44.5 16.9 RqEG096E94
K20G02L KC2020 04 13.43666 08 57 45.90 +05 42 44.5 18.0 VqEG096E94
K20G02L [C2020 04 13.43966 08 58 08.63 +05 41 17.3 17.9 GVEG096Q62
K20G02L [C2020 04 13.44154 08 58 07.70 +05 41 17.9 17.9 GVEG096Q62
K20G02L [C2020 04 13.44367 08 58 06.66 +05 41 18.3 17.8 GVEG096Q62
K20G02L KC2020 04 13.44375 08 57 43.28 +05 42 43.8 16.9 RqEG096E94
K20G02L KC2020 04 13.45336 08 57 40.06 +05 42 45.1 16.9 RqEG096E94
Station data:
(703) Catalina Sky Survey (N32.417006 W110.732640) US/Arizona. Observers
T. A. Pruyne, B. M. Africano, E. J. Christensen, G. A. Farneth, D. C.
Fuls, A. R. Gibbs, A. D. Grauer, H. Gröller, J. A. Johnson, R. A.
Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L. Seaman, F. C.
Shelly. 0.68 m Schmidt + 10K CCD.
(718) Tooele (N40.641408 W112.295800) US/Utah. Observer P. Wiggins. 0.35-m
f/5.5 Schmidt-Cassegrain + CCD.
(970) Chelmsford (N51.744716 E0.495400) UK. Observer N. James.
(E94) Gisborne (Possum Observatory) (S38.629922 E177.883310) New Zealand.
(F52) Pan-STARRS 2, Haleakala (N20.707384 W156.255910) US/Hawaii. 1.8-m
Ritchey-Chrétien + CCD.
(I52) Steward Observatory, Mt. Lemmon Station (N32.442547 W110.788920)
US/Arizona. Observers T. A. Pruyne, B. M. Africano, E. J. Christensen, G.
A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Gröller, J. A.
Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, D. Rankin, R. L.
Seaman, F. C. Shelly. 1.0-m reflector + CCD.
(Q62) iTelescope Observatory, Siding Spring (S31.273289 E149.064420)
Australia/NSW. 0.50-m f/6.8 astrograph + CCD + focal reducer, 0.70-m f/6.6
astrograph + CCD.
(Z80) Northolt Branch Observatory (N51.554661 W0.371920) UK. Observer G.
Wells. Measurer D. Bamberger. 0.25-m f/8 Ritchey-Chrétien + CCD.
Orbital elements: 2020 GL2 = BepiColombo (Earth flyby)
Perigee 2020 Apr 10.184773 +/- 5.9e-5 TT = 4:26:04 (JD 2458949.684773)
Epoch 2020 Apr 10.2 TT = JDT 2458949.7 Find_Orb
q 19059.341969 +/- 6.75 (J2000 equator)
H 26.2 G 0.15 Peri. 252.9452675 +/- 0.018
Node 149.5276990 +/- 0.008
e 1.758513890 +/- 0.000469 Incl. 159.5060123 +/- 0.00047
From 45 observations 2020 Apr. 10-13; mean residual 0".362
Orbital elements: 2020 GL2 = BepiColombo (heliocentric)
Perihelion 2020 Sep 9.712546 +/- 0.00486 TT = 17:06:04 (JD 2459102.212546)
Epoch 2020 Apr 30.0 TT = JDT 2458969.5 Earth MOID: 0.0001 Ve: 0.0003
M 183.4152247385 +/- 0.00055 (J2000 ecliptic) Find_Orb
n 1.3305808704 +/- 4.46e-5 Peri. 14.9109162 +/- 0.0006
a 0.8186693521 +/- 1.83e-5 Node 20.2315737 +/- 0.00006
e 0.236766687 +/- 2.87e-5 Incl. 1.6795613 +/- 0.00025
P 0.74/270.55d H 26.2 G 0.15 U 6.0
q 0.6248357212 +/- 3.74e-5 Q 1.0125029829 +/- 8.41e-7
From 45 observations 2020 Apr. 10-13; mean residual 0".362
Orbital elements: 2020 GL2 = BepiColombo (Venus flyby)
Perivenus 2020 Oct 15.214994 +/- 0.00462 TT = 5:09:35 (JD 2459137.714994)
Epoch 2020 Oct 15.0 TT = JDT 2459137.5 Find_Orb
q136306.10276 +/- 23922 (J2000 ecliptic)
H 26.2 G 0.15 Peri. 200.4598120 +/- 8
Node 44.2711354 +/- 7
e 27.317195411 +/- 4.59 Incl. 168.3484224 +/- 0.8
From 45 observations 2020 Apr. 10-13; mean residual 0".362
Residuals in arcseconds: 200410 Z80 .195+ .211+ 200413 718 .117+ .322+ 200413 E94 .938- .355- 200410 Z80 .038+ .088+ 200413 718 .284- .545+ 200413 E94 .455+ .158+ 200410 Z80 .084+ .142+ 200413 718 .153+ .211- 200413 E94 .569- .243- 200410 Z80 .132+ .086+ 200413 718 .122+ .436+ 200413 E94 .196+ .212+ 200411 Z80 .187+ .040- 200413 718 .156+ .093+ 200413 E94 .034+ .174+ 200411 Z80 .199- .328+ 200413 718 .045+ .364+ 200413 E94 .555- .358+ 200411 Z80 .715+ .260- 200413 703 .075- .257+ 200413 E94 .381- .593+ 200411 970 .130- .097- 200413 703 .040+ .116- 200413 E94 .277- .393- 200411 970 .025- .066- 200413 703 .283- .100+ 200413 E94 .460- .661+ 200412 F52 .052- .034+ 200413 703 .177+ .213+ 200413 E94 .661- .597+ 200412 F52 1.9m+ .060+ 200413 I52 .125+ .074+ 200413 Q62 .027+ .340- 200412 F52 .035+ .064+ 200413 I52 1.00+ .438- 200413 Q62 .025- .244- 200413 703 .195+ .030+ 200413 I52 .277+ 3.9m+ 200413 Q62 .059+ .399- 200413 703 .219+ .191+ 200413 I52 .458+ .036- 200413 E94 1.29- .287- 200413 703 .526+ .151+ 200413 E94 .068- .185- 200413 E94 .591+ .952+ Ephemerides (geocentric): Date (UTC) RA Dec delta r elong mag " sig PA ---- ----- -------------- ----------- ----- ------ ----- --- -------- 2020 04 10 23 52 01.775 +10 06 32.91 87035 1.0013 20.6 20?? 100 74 2020 04 11 09 15 03.503 +03 59 43.54 327995 1.0032 118.0 15.1 .460 13 2020 04 12 09 03 07.605 +05 04 44.73 688392 1.0043 113.9 16.9 .160 26 2020 04 13 08 59 21.411 +05 25 13.05 .00697 1.0053 112.0 17.8 .089 63 2020 04 14 08 57 30.983 +05 35 20.77 .00931 1.0063 110.5 18.5 .080 96 2020 04 15 08 56 27.146 +05 41 22.89 .01165 1.0072 109.3 19.0 .085 115 2020 04 16 08 55 47.306 +05 45 20.79 .01397 1.0080 108.2 19.4 .090 126 2020 04 17 08 55 21.819 +05 48 05.75 .01630 1.0088 107.1 19.8 .095 133 2020 04 18 08 55 05.826 +05 50 03.18 .01861 1.0094 106.1 20.1 .099 137 2020 04 19 08 54 56.584 +05 51 27.16 .02092 1.0101 105.1 20.4 .102 140 2020 04 20 08 54 52.396 +05 52 26.15 .02323 1.0106 104.1 20.7 .105 142 2020 04 21 08 54 52.136 +05 53 05.58 .02553 1.0111 103.1 20.9 .109 143 2020 04 22 08 54 55.006 +05 53 29.14 .02782 1.0115 102.2 21.1 .112 143 2020 04 23 08 55 00.408 +05 53 39.47 .03011 1.0118 101.2 21.3 .115 143 2020 04 24 08 55 07.873 +05 53 38.55 .03239 1.0121 100.3 21.5 .119 142 2020 04 25 08 55 17.010 +05 53 27.97 .03465 1.0123 99.4 21.7 .123 142 2020 04 26 08 55 27.487 +05 53 09.04 .03691 1.0124 98.5 21.8 .127 141 2020 04 27 08 55 39.006 +05 52 42.92 .03916 1.0125 97.6 22.0 .132 140 2020 04 28 08 55 51.298 +05 52 10.66 .04140 1.0125 96.7 22.1 .136 139 2020 04 29 08 56 04.113 +05 51 33.28 .04362 1.0124 95.8 22.3 .141 138 2020 04 30 08 56 17.216 +05 50 51.76 .04583 1.0123 94.9 22.4 .145 138 2020 05 01 08 56 30.385 +05 50 07.09 .04802 1.0121 94.0 22.6 .149 137 2020 05 02 08 56 43.409 +05 49 20.27 .05020 1.0118 93.1 22.7 .153 137 2020 05 03 08 56 56.091 +05 48 32.34 .05236 1.0114 92.2 22.8 .156 137 2020 05 04 08 57 08.252 +05 47 44.34 .05451 1.0110 91.3 22.9 .158 137 2020 05 05 08 57 19.732 +05 46 57.31 .05664 1.0105 90.4 23.0 .159 138 2020 05 06 08 57 30.399 +05 46 12.28 .05875 1.0100 89.5 23.1 .159 138 2020 05 07 08 57 40.151 +05 45 30.17 .06084 1.0094 88.6 23.2 .159 139 2020 05 08 08 57 48.914 +05 44 51.81 .06292 1.0087 87.7 23.3 .157 140 2020 05 09 08 57 56.642 +05 44 17.91 .06497 1.0079 86.8 23.4 .154 142 2020 05 10 08 58 03.306 +05 43 49.02 .06701 1.0071 85.8 23.5 .151 143 2020 05 11 08 58 08.889 +05 43 25.60 .06903 1.0062 84.9 23.6 .147 145 2020 05 12 08 58 13.371 +05 43 07.98 .07104 1.0053 84.0 23.7 .142 147 2020 05 13 08 58 16.731 +05 42 56.48 .07302 1.0042 83.0 23.8 .137 149 2020 05 14 08 58 18.935 +05 42 51.37 .07498 1.0031 82.1 23.9 .132 152 2020 05 15 08 58 19.940 +05 42 52.95 .07693 1.0020 81.2 24.0 .127 155 2020 05 16 08 58 19.693 +05 43 01.50 .07885 1.0008 80.2 24.1 .121 158 2020 05 17 08 58 18.127 +05 43 17.36 .08076 0.9995 79.3 24.2 .116 161 2020 05 18 08 58 15.170 +05 43 40.88 .08264 0.9981 78.3 24.3 .111 165 2020 05 19 08 58 10.736 +05 44 12.46 .08450 0.9967 77.3 24.4 .107 169 2020 05 20 08 58 04.733 +05 44 52.53 .08634 0.9952 76.4 24.4 .103 173 2020 05 21 08 57 57.061 +05 45 41.55 .08816 0.9936 75.4 24.5 .099 177 2020 05 22 08 57 47.609 +05 46 40.04 .08995 0.9920 74.4 24.6 .096 2 2020 05 23 08 57 36.259 +05 47 48.56 .09172 0.9903 73.4 24.7 .094 7 2020 05 24 08 57 22.884 +05 49 07.74 .09347 .98852 72.4 24.8 .093 13 2020 05 25 08 57 07.348 +05 50 38.24 .09520 .98669 71.4 24.9 .092 18 2020 05 26 08 56 49.509 +05 52 20.80 .09690 .98480 70.4 24.9 .092 24 2020 05 27 08 56 29.217 +05 54 16.23 .09858 .98284 69.4 25.0 .093 29 2020 05 28 08 56 06.318 +05 56 25.40 .10024 .98082 68.3 25.1 .095 35 2020 05 29 08 55 40.658 +05 58 49.24 .10188 .97873 67.3 25.2 .099 40 2020 05 30 08 55 12.082 +06 01 28.72 .10350 .97657 66.2 25.3 .103 45 2020 05 31 08 54 40.439 +06 04 24.89 .10509 .97436 65.1 25.4 .108 50 2020 06 01 08 54 05.586 +06 07 38.79 .10667 .97207 64.0 25.5 .114 55 2020 06 02 08 53 27.393 +06 11 11.50 .10823 .96973 62.9 25.6 .122 59 2020 06 03 08 52 45.743 +06 15 04.07 .10977 .96731 61.8 25.7 .130 63 2020 06 04 08 52 00.539 +06 19 17.52 .11130 .96484 60.7 25.7 .139 66 2020 06 05 08 51 11.704 +06 23 52.80 .11282 .96230 59.5 25.8 .148 69 2020 06 06 08 50 19.179 +06 28 50.77 .11432 .95970 58.3 25.9 .158 72 2020 06 07 08 49 22.923 +06 34 12.20 .11582 .95704 57.2 26.1 .168 74 2020 06 08 08 48 22.909 +06 39 57.78 .11731 .95432 56.0 26.2 .178 76