MPEC 2021-D92 : 2021 DC2
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M.P.E.C. 2021-D92 Issued 2021 February 23, 18:54 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 DC2
Observations:
K21D02C C2021 02 06.31031808 04 34.863+14 50 15.51 21.05GVED092F52
K21D02C C2021 02 06.32123608 04 32.303+14 50 26.45 21.06GVED092F52
K21D02C C2021 02 06.33217108 04 29.819+14 50 37.22 21.72GVED092F52
K21D02C* C2021 02 19.17297907 09 41.97 +18 41 05.6 20.97GVED092G96
K21D02C C2021 02 19.17853007 09 40.33 +18 41 11.8 20.67GVED092G96
K21D02C C2021 02 19.18406307 09 38.75 +18 41 17.7 21.33GVED092G96
K21D02C C2021 02 19.18959907 09 37.13 +18 41 24.1 21.15GVED092G96
K21D02C KC2021 02 19.29450507 09 06.38 +18 43 20.4 21.19GVED092I52
K21D02C KC2021 02 19.29786507 09 05.37 +18 43 24.2 21.87GVED092I52
K21D02C KC2021 02 20.09372507 05 18.99 +18 58 09.0 20.4 VqED092858
K21D02C KC2021 02 20.10343307 05 16.12 +18 58 19.4 20.7 VqED092858
K21D02C KC2021 02 20.11313807 05 13.30 +18 58 31.0 qED092858
K21D02C C2021 02 20.15111 07 05 02.12 +18 59 14.7 VED092I52
K21D02C C2021 02 20.15446 07 05 01.12 +18 59 18.7 VED092I52
K21D02C C2021 02 20.15781 07 05 00.14 +18 59 21.1 VED092I52
K21D02C ^C2021 02 23.20885 06 50 08.07 +19 55 14.0 21.9 GVED092695
K21D02C ^C2021 02 23.21728 06 50 05.53 +19 55 22.9 21.5 GVED092695
Observer details:
695 Kitt Peak. Observer R. A. Mastaler. 2.3-m f/9 reflector + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer T. A. Pruyne. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. Rankin, G. J.
Leonard. Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J.
Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
Wierzchos, B. Gray. 1.0-m reflector + CCD.
Orbital elements:
2021 DC2 PHA, Earth MOID = 0.0124 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 304.09989 (2000.0) P Q
n 0.40783034 Peri. 100.73586 -0.32392252 +0.94487889
a 1.8008728 Node 150.22697 -0.90124431 -0.29283023
e 0.6863576 Incl. 5.51573 -0.28780705 -0.14647303
P 2.42 H 21.6 G 0.15 U 8
Residuals in seconds of arc
210206 F52 0.6+ 0.0 210219 G96 0.1+ 0.1- 210220 I52 0.1+ 0.3+
210206 F52 0.4- 0.0 210219 I52 0.0 0.5+ 210220 I52 0.0 0.6+
210206 F52 0.2- 0.0 210219 I52 0.4- 0.6+ 210220 I52 0.1+ 0.8-
210219 G96 0.4- 0.1- 210220 858 0.2+ 0.0 210223 695 0.3- 0.0
210219 G96 0.5- 0.1- 210220 858 0.1+ 0.6- 210223 695 0.1+ 0.1-
210219 G96 0.1+ 0.4- 210220 858 0.8+ 0.1+
Ephemeris:
2021 DC2 a,e,i = 1.80, 0.69, 6 q = 0.5648
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 24 08 44 19.5 +11 52 21 0.5851 1.5652 171.3 5.5 21.9
...
2021 02 08 07 58 12.1 +15 18 26 0.4453 1.4107 158.8 14.7 21.4
...
2021 02 16 07 24 27.0 +17 42 05 0.3951 1.3240 142.7 26.9 21.4
...
2021 02 22 06 56 04.9 +19 33 20 0.3677 1.2569 129.8 37.2 21.4
2021 02 23 06 51 10.5 +19 51 32 0.3639 1.2455 127.7 39.0 21.4
2021 02 24 06 46 13.7 +20 09 32 0.3603 1.2341 125.5 40.8 21.4
...
2021 03 02 06 15 54.7 +21 51 52 0.3421 1.1649 112.3 51.9 21.5
...
2021 03 10 05 34 18.2 +23 47 01 0.3253 1.0704 94.8 67.6 21.7
...
2021 03 25 04 09 07.1 +25 39 28 0.3067 0.8896 61.0 101.5 22.5
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-D92
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