MPEC 2021-G34 : 2021 GD1
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M.P.E.C. 2021-G34 Issued 2021 April 4, 21:22 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 GD1
Observations:
K21G01D C2021 04 01.26356 10 42 19.80 -28 17 40.4 19.7 GVEG034703
K21G01D C2021 04 01.28008 10 42 14.58 -28 14 52.9 18.8 GVEG034703
K21G01D* C2021 04 03.40655110 30 35.92 -20 42 18.4 18.70cVEG034T08
K21G01D C2021 04 03.41072510 30 34.19 -20 41 10.7 18.95cVEG034T08
K21G01D C2021 04 03.41587210 30 31.99 -20 39 47.1 18.78cVEG034T08
K21G01D C2021 04 03.43146110 30 25.44 -20 35 33.2 18.50cVEG034T08
K21G01D KC2021 04 03.68692 10 28 48.15 -19 25 01.5 17.7 GVEG034N82
K21G01D KC2021 04 03.69016 10 28 46.74 -19 24 06.3 18.0 GVEG034N82
K21G01D KC2021 04 03.69340 10 28 45.32 -19 23 09.9 17.9 GVEG034N82
K21G01D KC2021 04 03.81270610 27 59.50 -18 48 19.4 18.5 GVEG034L01
K21G01D KC2021 04 03.81452910 27 58.66 -18 47 47.5 18.5 GVEG034L01
K21G01D KC2021 04 03.81627810 27 57.91 -18 47 16.8 18.3 GVEG034L01
K21G01D KC2021 04 03.81802410 27 57.16 -18 46 46.2 18.4 GVEG034L01
K21G01D KC2021 04 03.82063210 27 56.02 -18 45 59.4 18.5 GVEG034L01
K21G01D KC2021 04 03.86076510 27 38.23 -18 34 02.9 18.6 GVEG034595
K21G01D KC2021 04 03.86683510 27 35.54 -18 32 14.6 18.3 GVEG034595
K21G01D KC2021 04 03.87127810 27 33.86 -18 30 52.2 18.4 GVEG034K63
K21G01D KC2021 04 03.87290910 27 32.84 -18 30 25.4 18.3 GVEG034595
K21G01D KC2021 04 03.87675 10 27 32.44 -18 29 14.9 18.4 GVEG034958
K21G01D KC2021 04 03.87709710 27 31.26 -18 29 08.6 18.1 GVEG034K63
K21G01D KC2021 04 03.87899310 27 30.07 -18 28 34.9 18.4 GVEG034595
K21G01D KC2021 04 03.88309 10 27 29.65 -18 27 21.2 18.2 GVEG034958
K21G01D KC2021 04 03.88910 10 27 26.91 -18 25 32.2 18.6 GVEG034958
K21G01D KC2021 04 03.92931610 27 08.81 -18 13 21.0 17.5 GVEG034I93
K21G01D KC2021 04 03.93241210 27 07.38 -18 12 24.8 18.0 GVEG034I93
K21G01D KC2021 04 03.93559510 27 05.95 -18 11 26.7 18.2 GVEG034I93
K21G01D KC2021 04 03.93745710 27 04.15 -18 10 50.1 18.0 GVEG034104
K21G01D KC2021 04 03.94340610 27 01.49 -18 09 01.3 17.9 GVEG034104
K21G01D KC2021 04 03.94935210 26 58.77 -18 07 12.4 VEG034104
K21G01D KC2021 04 03.95818 10 27 01.67 -18 02 26.9 18.4 VqEG034X31
K21G01D KC2021 04 03.96066 10 27 00.56 -18 01 42.3 18.9 VqEG034X31
K21G01D KC2021 04 03.96315 10 26 59.40 -18 00 56.5 18.5 VqEG034X31
K21G01D KC2021 04 03.99158010 26 45.07 -17 52 37.9 18.6 GXEG034Y00
K21G01D KC2021 04 03.99361410 26 44.15 -17 52 00.0 18.3 GXEG034Y00
K21G01D KC2021 04 03.99566510 26 43.16 -17 51 20.6 19.1 GXEG034Y00
K21G01D KC2021 04 04.14154 10 25 40.44 -17 07 00.9 18.5 RqEG034734
K21G01D KC2021 04 04.14469 10 25 38.95 -17 05 59.8 18.3 RqEG034734
K21G01D KC2021 04 04.14784 10 25 37.46 -17 04 59.8 18.5 RqEG034734
K21G01D KC2021 04 04.15099 10 25 35.96 -17 03 57.9 18.4 RqEG034734
K21G01D C2021 04 04.35006710 24 06.78 -15 58 04.2 18.64cVEG034T08
K21G01D C2021 04 04.35330810 24 05.18 -15 56 57.9 18.63cVEG034T08
K21G01D C2021 04 04.35931010 24 02.21 -15 54 57.1 18.79cVEG034T08
K21G01D C2021 04 04.37083010 23 56.51 -15 51 03.0 18.76cVEG034T08
K21G01D 1C2021 04 04.77836310 20 50.74 -13 26 26.3 VEG034246
K21G01D 1C2021 04 04.77886310 20 50.46 -13 26 14.5 VEG034246
K21G01D 1C2021 04 04.77902410 20 50.40 -13 26 10.3 VEG034246
K21G01D 1C2021 04 04.77918310 20 50.30 -13 26 06.8 VEG034246
K21G01D 1C2021 04 04.77933210 20 50.23 -13 26 03.6 VEG034246
K21G01D 1C2021 04 04.77945610 20 50.16 -13 26 01.6 18.3 GVEG034246
K21G01D KC2021 04 04.78467010 20 47.51 -13 24 04.6 17.3 RVEG034K61
K21G01D KC2021 04 04.78518810 20 47.22 -13 23 53.1 16.8 RVEG034K61
K21G01D KC2021 04 04.78613610 20 46.74 -13 23 31.2 17.5 RVEG034K61
K21G01D KC2021 04 04.78700110 20 46.30 -13 23 11.8 17.2 RVEG034K61
K21G01D KC2021 04 04.79245810 20 42.35 -13 21 10.0 18.0 GVEG034L18
K21G01D KC2021 04 04.79327610 20 41.95 -13 20 51.7 18.1 GVEG034L18
K21G01D KC2021 04 04.79409810 20 41.54 -13 20 33.6 17.7 GVEG034L18
K21G01D KC2021 04 04.79492310 20 41.07 -13 20 14.4 18.2 GVEG034L18
K21G01D KC2021 04 04.79576010 20 40.67 -13 19 55.6 17.8 GVEG034L18
K21G01D KC2021 04 04.80000 10 20 39.87 -13 18 20.0 18.2 GVEG034K74
K21G01D KC2021 04 04.80799 10 20 35.76 -13 15 19.8 18.4 GVEG034K74
K21G01D KC2021 04 04.81511 10 20 32.07 -13 12 38.5 18.4 GVEG034K74
K21G01D KC2021 04 04.81542210 20 31.56 -13 12 32.9 17.9 GVEG034G34
K21G01D KC2021 04 04.81973210 20 29.33 -13 10 54.9 18.3 GVEG034G34
K21G01D KC2021 04 04.82128 10 20 28.86 -13 10 18.5 18.3 GVEG034K74
K21G01D KC2021 04 04.82404110 20 27.08 -13 09 18.4 18.3 GVEG034G34
K21G01D KC2021 04 04.82835310 20 24.87 -13 07 39.6 17.6 GVEG034G34
K21G01D KC2021 04 04.83489910 20 22.71 -13 05 09.9 18.4 GVEG034J95
K21G01D KC2021 04 04.83713310 20 21.56 -13 04 19.3 18.5 GVEG034J95
K21G01D KC2021 04 04.83928 10 20 19.53 -13 03 23.4 17.9 RaEG034233
K21G01D KC2021 04 04.84151210 20 19.30 -13 02 38.9 18.1 GVEG034J69
K21G01D KC2021 04 04.84379 10 20 17.19 -13 01 41.3 18.1 RaEG034233
K21G01D KC2021 04 04.84556610 20 17.20 -13 01 06.6 18.1 GVEG034J69
K21G01D KC2021 04 04.84578 10 20 16.11 -13 00 54.6 17.1 GVEG034G17
K21G01D KC2021 04 04.84667 10 20 16.69 -13 00 31.1 18.2 RqEG034B74
K21G01D KC2021 04 04.84833 10 20 14.83 -12 59 57.6 17.7 RaEG034233
K21G01D KC2021 04 04.84961510 20 15.04 -12 59 33.8 17.4 GVEG034J69
K21G01D KC2021 04 04.85113 10 20 14.39 -12 58 48.5 18.2 RqEG034B74
K21G01D KC2021 04 04.85215 10 20 12.73 -12 58 29.7 17.3 GVEG034G17
K21G01D KC2021 04 04.85395 10 20 12.93 -12 57 43.9 18.4 RqEG034B74
K21G01D KC2021 04 04.85852 10 20 09.39 -12 56 04.1 17.5 GVEG034G17
K21G01D KC2021 04 04.86263010 20 08.28 -12 54 37.1 18.2 GVEG034J95
K21G01D KC2021 04 04.86670210 20 06.19 -12 53 03.8 18.2 GVEG034J95
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
233 Sauro Donati Astronomical Observatory, San Vito. Observers S. Donati, F.
Biagini. Measurer S. Donati. 0.30-m f/9 Schmidt-Cassegrain + CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha, M. Honkova.
Measurer M. Tichy. 1.06-m f/2.7 reflector + 2048x2048 CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey. Observer G. J. Leonard. Measurers B. Gray, D.
Rankin, F. C. Shelly. 0.68-m Schmidt + 10K CCD.
734 Farpoint Observatory, Eskridge. Observers G. Hug, D. Cromer, D. Goodin,
R. Valentine. Measurer D. Cromer. 0.7-m reflector + CCD.
958 Observatoire de Dax. Observer P. Dupouy. 0.32-m f/4.1 Schmidt-
Cassegrain.
B74 Santa Maria de Montmagastrell. Observer J. M. Bosch. 0.40-m f/10
Schmidt-Cassegrain + CCD.
G17 BAS Observatory, Scandicci. Observer L. Grazzini. 0.20-m f/10 Schmidt-
Cassegrain + CCD + f/6.3 focal reducer.
G34 Oberfrauendorf. Observer T. Felber. 0.35-m f/6.3 Schmidt-Cassegrain +
CCD.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/3.7 reflector + CCD.
J69 North Observatory, Clanfield. Observer D. Briggs. 0.41-m f/4.5 Newtonian
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
K61 Rokycany Observatory. Observer M. Adamovsky. 0.51-m f/6.8 reflector +
CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.2 Newtonian reflector + CCD.
K74 Muensterschwarzach Observatory, Schwarzach. Observer C. Gerhard. 0.30-m
f/3.75 Newtonian reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Pujagic, V. Dobos.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
L18 QOS Observatory, Zalistci. Observers Y. V. Shevchuk, O. V. Kravchenko.
Measurer A. M. Kozhukhov. 0.50-m f/3.8 reflector + CCD.
N82 Multa Observatory. Observer L. Elenin. 0.4-m f/1.25 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, J. Tonry, A. Heinze, H.
Weiland. Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, A.
Fitzsimmons, J. Robinson, N. Erasmus. 0.5-m reflector + CCD.
X31 Galileo Galilei Observatory, Oro Verde. Observer C. Fornari. 0.40-m f/8
Ritchey-Chretien + CCD.
Y00 SONEAR Observatory, Oliveira. Observers C. Jacques, E. Pimentel, J.
Barros. Measurer C. Jacques. 0.28-m f/2.2 astrograph + CCD.
Orbital elements:
2021 GD1 Earth MOID = 0.0246 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 298.09382 (2000.0) P Q
n 0.38749292 Peri. 70.33316 -0.10959332 +0.98449529
a 1.8633461 Node 195.43158 -0.98898257 -0.09420751
e 0.5798954 Incl. 30.97887 +0.09951275 +0.14796611
P 2.54 H 22.37 G 0.15 U 8
Residuals in seconds of arc
210401 703 0.0+ 0.7- 210403 104 0.4+ 0.3+ 210404 L18 0.2+ 0.2+
210401 703 0.9- 0.6+ 210403 104 0.6+ 0.2- 210404 L18 0.5+ 0.3-
210403 T08 0.0+ 0.1- 210403 104 0.1- 0.7- 210404 L18 0.2- 0.5+
210403 T08 0.4+ 0.1- 210403 X31 0.2+ 0.8+ 210404 L18 0.3+ 0.4+
210403 T08 0.1+ 0.0+ 210403 X31 0.2+ 0.0- 210404 K74 0.0+ 0.1-
210403 T08 0.1+ 0.1+ 210403 X31 0.3- 0.3+ 210404 K74 0.2+ 0.2-
210403 N82 0.3- 0.6+ 210403 Y00 0.7+ 0.9- 210404 K74 0.1+ 0.1+
210403 N82 0.5- 0.0- 210403 Y00 1.1+ 0.7- 210404 G34 0.2- 0.1-
210403 N82 0.9- 0.5+ 210403 Y00 0.5+ 0.7+ 210404 G34 0.1- 0.2+
210403 L01 0.1- 0.2- 210404 734 0.1+ 0.1+ 210404 K74 0.1- 0.3+
210403 L01 0.7- 0.5- 210404 734 0.1- 0.9+ 210404 G34 0.3- 1.0-
210403 L01 0.4- 0.8- 210404 734 0.2- 0.3+ 210404 G34 0.1+ 0.2-
210403 L01 0.1- 1.1- 210404 734 (0.5- 1.7+) 210404 J95 0.2- 0.0+
210403 L01 0.1+ 0.6- 210404 T08 0.1- 0.1- 210404 J95 0.2- 0.3-
210403 595 0.0- 0.2+ 210404 T08 0.1- 0.5+ 210404 233 0.3- 0.1+
210403 595 0.1+ 0.3- 210404 T08 0.2- 0.4- 210404 J69 0.2+ 0.0+
210403 K63 0.4+ 0.7+ 210404 T08 0.2- 0.6- 210404 233 0.2+ 0.6-
210403 K63 0.4+ 0.7+ 210404 246 0.5+ 0.4- 210404 J69 0.3+ 0.1-
210403 595 0.2+ 0.4- 210404 246 0.1+ 0.1+ 210404 G17 0.3+ 0.5+
210403 958 (0.1- 1.3-) 210404 246 0.5+ 0.7+ 210404 B74 0.1+ 0.6+
210403 K63 0.4+ 0.5- 210404 246 0.2+ 0.7+ 210404 233 (0.6+ 0.5-)
210403 K63 0.4+ 0.5- 210404 246 0.3+ 0.5+ 210404 J69 0.4- 0.3+
210403 595 0.6- 0.4+ 210404 246 0.2+ 0.2- 210404 B74 0.8+ 1.4+
210403 958 (0.5+ 1.8-) 210404 K61 0.4+ 0.5+ 210404 G17 0.1- 0.1-
210403 958 (0.2- 1.2-) 210404 K61 0.0+ 0.4+ 210404 B74 (1.2+ 1.6+)
210403 I93 0.5+ 0.1+ 210404 K61 0.1+ 1.0+ 210404 G17 0.2+ 0.3-
210403 I93 0.0+ 0.3- 210404 K61 0.2+ 1.0+ 210404 J95 0.4- 0.2-
210403 I93 0.1+ 0.4- 210404 L18 0.1- 0.4+ 210404 J95 0.1+ 0.2-
Ephemeris:
2021 GD1 a,e,i = 1.86, 0.58, 31 q = 0.7828
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 05 11 29 24.7 -43 49 08 0.4605 1.3336 129.6 34.9 22.8
...
2021 03 20 11 14 47.3 -42 07 02 0.2617 1.1993 136.5 34.8 21.3
...
2021 03 28 10 57 58.1 -36 20 09 0.1618 1.1280 140.8 34.0 20.1
...
2021 04 03 10 33 09.9 -22 25 36 0.09283 1.0754 143.1 34.0 18.8
2021 04 04 10 26 40.3 -17 50 21 0.08265 1.0668 142.4 34.9 18.5
2021 04 05 10 18 59.3 -11 59 44 0.07324 1.0582 140.9 36.6 18.3
...
2021 04 11 08 30 27.0 +53 23 47 0.05641 1.0076 94.0 82.8 19.0
...
2021 04 19 01 54 11.8 +70 36 27 0.1326 0.9441 59.5 113.5 22.2
...
2021 05 04 00 23 42.8 +59 23 42 0.3113 0.8451 50.5 113.0 23.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-G34
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