MPEC 2021-B64 : 2021 BK1
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M.P.E.C. 2021-B64 Issued 2021 January 19, 01:31 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 BK1
Observations:
K21B01K* C2021 01 17.42696610 06 30.09 +34 59 31.6 20.93GVEB064G96
K21B01K C2021 01 17.43211210 06 28.25 +34 59 44.5 20.73GVEB064G96
K21B01K C2021 01 17.43726810 06 26.37 +34 59 57.8 20.34GVEB064G96
K21B01K C2021 01 17.44241810 06 24.50 +35 00 09.6 20.74GVEB064G96
K21B01K KC2021 01 17.52832310 05 53.24 +35 03 37.7 20.56GVEB064I52
K21B01K KC2021 01 17.52958710 05 52.79 +35 03 40.9 20.73GVEB064I52
K21B01K KC2021 01 17.53084910 05 52.32 +35 03 43.9 20.85GVEB064I52
K21B01K KC2021 01 17.53211110 05 51.82 +35 03 46.9 20.51GVEB064I52
K21B01K KC2021 01 18.01995010 03 09.34 +35 30 03.4 20.3 GVEB064I93
K21B01K KC2021 01 18.02386010 03 07.36 +35 30 19.9 20.6 GVEB064I93
K21B01K KC2021 01 18.02776910 03 05.32 +35 30 36.1 19.7 GVEB064I93
K21B01K mC2021 01 18.27371410 01 11.42 +35 48 39.0 19.86GVEB064I52
K21B01K mC2021 01 18.27413610 01 11.14 +35 48 41.1 20.03GVEB064I52
K21B01K mC2021 01 18.27455510 01 10.87 +35 48 43.7 20.19GVEB064I52
K21B01K mC2021 01 18.27497410 01 10.63 +35 48 45.3 19.80GVEB064I52
K21B01K KC2021 01 18.27593 10 01 05.63 +35 48 43.7 20.0 GVEB064H36
K21B01K KC2021 01 18.28128 10 01 02.24 +35 49 11.6 20.2 GVEB064H36
K21B01K KC2021 01 18.28664 10 00 58.87 +35 49 38.0 20.1 GVEB064H36
K21B01K KC2021 01 18.29199 10 00 55.37 +35 50 05.7 20.1 GVEB064H36
K21B01K KC2021 01 18.29700 10 00 52.11 +35 50 31.2 20.1 GVEB064H36
K21B01K C2021 01 18.64078 09 57 14.71 +36 21 15.5 19.6 GVEB064N88
K21B01K C2021 01 18.64115 09 57 14.42 +36 21 17.5 19.6 GVEB064N88
K21B01K C2021 01 18.64152 09 57 14.23 +36 21 20.8 19.5 GVEB064N88
K21B01K C2021 01 18.64190 09 57 13.87 +36 21 23.9 19.4 GVEB064N88
K21B01K KC2021 01 18.86939 09 53 48.55 +36 49 44.2 19.3 GVEB064595
K21B01K KC2021 01 18.88781 09 53 28.37 +36 52 34.0 19.5 GVEB064595
K21B01K KC2021 01 18.89931 09 53 15.40 +36 54 21.8 19.4 GVEB064595
K21B01K KC2021 01 18.95823809 52 05.85 +37 03 53.6 19.0 GVEB064K63
K21B01K KC2021 01 18.96241409 52 00.58 +37 04 35.1 19.0 GVEB064K63
K21B01K KC2021 01 19.01256509 50 52.69 +37 12 52.8 18.8 GVEB064L01
K21B01K KC2021 01 19.01335209 50 51.60 +37 13 00.5 18.8 GVEB064L01
K21B01K KC2021 01 19.01412509 50 50.54 +37 13 08.2 18.8 GVEB064L01
K21B01K KC2021 01 19.01567309 50 48.41 +37 13 24.2 19.0 GVEB064L01
K21B01K KC2021 01 19.01683309 50 46.79 +37 13 36.3 19.0 GVEB064L01
Observer details:
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
G96 Mt. Lemmon Survey. Observer D. C. Fuls. 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.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + 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.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/3.7 reflector + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.2 Newtonian reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, V. Dobos, D. Pujagic.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
N88 Xingming Observatory #3, Nanshan. Observer X. Gao. Measurer Q.-Z. Ye.
0.6-m f/8 Ritchey-Chretien + CCD.
Orbital elements:
2021 BK1 Earth MOID = 0.0003 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 290.12451 (2000.0) P Q
n 0.84949144 Peri. 309.75657 -0.27554908 +0.88604368
a 1.1041550 Node 300.32746 -0.69558866 -0.45147550
e 0.7213111 Incl. 25.59041 -0.66349764 +0.10533981
P 1.16 H 26.2 G 0.15 U 8
Residuals in seconds of arc
210117 G96 0.3- 0.2+ 210118 I52 0.1+ 0.2- 210118 595 0.2+ 0.6+
210117 G96 0.1- 0.1+ 210118 I52 0.0 0.2+ 210118 595 0.5+ 0.1+
210117 G96 0.3- 0.5+ 210118 I52 0.2+ 0.4- 210118 595 0.5+ 0.2+
210117 G96 0.3- 0.5- 210118 H36 0.8- 0.1+ 210118 K63 0.1+ 0.0
210117 I52 0.5+ 0.2- 210118 H36 0.7- 0.7+ 210118 K63 0.4+ 0.3+
210117 I52 0.6+ 0.0 210118 H36 0.2+ 0.4- 210119 L01 0.2- 0.0
210117 I52 0.4+ 0.0 210118 H36 0.4- 0.0 210119 L01 0.3- 0.2-
210117 I52 0.1- 0.1+ 210118 H36 0.4- 0.1- 210119 L01 0.2- 0.4-
210118 I93 0.3+ 0.2- 210118 N88 0.8- 0.1- 210119 L01 0.0 0.1-
210118 I93 0.6+ 0.2+ 210118 N88 0.7- 0.8- 210119 L01 0.1- 0.3+
210118 I93 0.3+ 0.2+ 210118 N88 0.7+ 0.2-
210118 I52 0.3+ 0.1- 210118 N88 0.1+ 0.1+
Ephemeris:
2021 BK1 a,e,i = 1.10, 0.72, 26 q = 0.3077
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 20 10 04 03.8 +32 48 39 0.5037 1.3354 124.5 37.4 26.8
...
2021 01 04 10 13 51.4 +33 00 51 0.2587 1.1834 136.1 35.2 25.1
...
2021 01 12 10 14 46.1 +33 29 53 0.1325 1.0918 142.7 33.1 23.4
...
2021 01 18 10 03 12.5 +35 29 28 0.03936 1.0178 149.1 29.7 20.5
2021 01 19 09 51 05.0 +37 11 35 0.02398 1.0050 151.3 28.0 19.4
2021 01 20 08 49 54.0 +43 37 42 0.0089110.9921 155.0 24.8 17.1
...
2021 01 26 22 28 05.2 -31 26 42 0.08453 0.9114 28.8 148.7 28.8
...
2021 02 03 22 20 30.0 -31 57 48 0.2108 0.7954 22.8 151.3 31.0
...
2021 02 18 22 09 38.0 -29 48 36 0.4796 0.5529 18.1 146.3 31.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-B64
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