MPEC 2021-D50 : 2021 DC1
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M.P.E.C. 2021-D50 Issued 2021 February 19, 10:10 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 DC1
Observations:
K21D01C* C2021 02 18.43851912 38 38.60 +23 47 04.2 20.26GVED050G96
K21D01C C2021 02 18.44367112 38 47.02 +23 50 11.0 19.40GVED050G96
K21D01C C2021 02 18.44882912 38 55.45 +23 53 16.6 19.30GVED050G96
K21D01C KC2021 02 18.46472712 39 21.41 +24 02 46.9 19.69GVED050I52
K21D01C KC2021 02 18.46528912 39 22.37 +24 03 06.7 19.62GVED050I52
K21D01C KC2021 02 18.46585212 39 23.25 +24 03 27.1 19.54GVED050I52
K21D01C KC2021 02 18.46641412 39 24.19 +24 03 47.2 19.42GVED050I52
K21D01C KC2021 02 18.52161412 40 55.74 +24 36 37.4 18.74GVED050I52
K21D01C KC2021 02 18.52256112 40 57.28 +24 37 10.2 19.07GVED050I52
K21D01C KC2021 02 18.52350712 40 58.84 +24 37 44.0 19.40GVED050I52
K21D01C KC2021 02 18.96215312 55 16.55 +28 57 57.1 19.2 GVED050J95
K21D01C KC2021 02 18.96462812 55 21.29 +28 59 27.3 19.4 GVED050J95
K21D01C KC2021 02 18.97152412 55 34.47 +29 03 38.2 19.1 GVED050J95
K21D01C KC2021 02 19.07003412 58 40.99 +30 02 39.3 19.0 GVED050Z99
K21D01C KC2021 02 19.07345112 58 47.50 +30 04 42.0 19.4 GVED050Z99
K21D01C KC2021 02 19.07473612 58 49.91 +30 05 27.8 19.1 GVED050Z99
K21D01C KC2021 02 19.29475013 06 34.50 +32 15 54.8 19.9 VqED050858
K21D01C KC2021 02 19.29886113 06 42.68 +32 18 21.7 19.7 VqED050858
K21D01C KC2021 02 19.30297713 06 50.86 +32 20 48.5 19.9 VqED050858
K21D01C KC2021 02 19.32980313 07 46.16 +32 36 50.0 19.44GVED050I52
K21D01C KC2021 02 19.33036813 07 47.27 +32 37 09.9 19.22GVED050I52
K21D01C KC2021 02 19.33093013 07 48.41 +32 37 29.6 18.97GVED050I52
Observer details:
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + 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. Observer D. Rankin. 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. 1.0-m reflector +
CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
Z99 Clixby Observatory, Cleethorpes. Observer A. Mickleburgh. 0.36-m f/8
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 DC1 Earth MOID = 0.0127 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 230.82252 (2000.0) P Q
n 0.93522486 Peri. 86.24637 -0.57075630 +0.81204453
a 1.0356000 Node 147.95891 -0.81456016 -0.54123664
e 0.1246990 Incl. 13.26600 -0.10358084 -0.21828096
P 1.05 H 26.32 G 0.15 U 6
Residuals in seconds of arc
210218 G96 (1.2- 2.0-) 210218 I52 0.5+ 0.1- 210219 858 0.3+ 0.2+
210218 G96 0.5- 0.3- 210218 I52 0.2+ 0.1+ 210219 858 0.3+ 0.4+
210218 G96 0.1- 0.1+ 210218 J95 0.2- 0.2- 210219 858 0.3+ 0.4+
210218 I52 0.0- 0.3+ 210218 J95 0.0+ 0.0+ 210219 I52 0.2- 0.0+
210218 I52 0.4+ 0.0- 210218 J95 0.3+ 0.5+ 210219 I52 0.4- 0.1-
210218 I52 0.1- 0.3+ 210219 Z99 0.0+ 0.7- 210219 I52 0.1- 0.3-
210218 I52 0.2+ 0.2+ 210219 Z99 0.1+ 0.2-
210218 I52 1.2+ 0.8+ 210219 Z99 0.4- 0.4-
Ephemeris:
2021 DC1 a,e,i = 1.04, 0.12, 13 q = 0.9065
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 20 09 39 36.6 -34 12 42 0.1462 1.0675 121.4 51.9 24.2
...
2021 02 04 10 09 03.6 -30 30 54 0.07517 1.0367 131.1 45.8 22.5
...
2021 02 12 10 51 33.2 -17 58 16 0.03999 1.0197 143.9 34.8 20.8
...
2021 02 18 12 26 15.5 +19 26 36 0.02261 1.0070 145.3 34.0 19.5
2021 02 19 12 56 13.3 +29 23 29 0.02211 1.0049 137.3 41.9 19.7
2021 02 20 13 32 26.4 +38 49 39 0.02260 1.0027 127.8 51.1 20.0
...
2021 02 26 17 44 51.9 +59 14 31 0.03954 0.9901 89.0 88.7 22.4
...
2021 03 06 19 45 34.9 +54 57 10 0.07294 0.9738 73.5 102.4 24.3
...
2021 03 21 20 42 24.8 +49 12 50 0.1373 0.9460 64.9 107.6 25.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-D50
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