MPEC 2021-B20 : 2021 BD
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M.P.E.C. 2021-B20 Issued 2021 January 17, 02:56 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 BD
Observations:
K21B00D* C2021 01 16.40471108 19 42.53 +30 03 12.7 18.39gUEB020I41
K21B00D C2021 01 16.40505808 19 40.02 +30 03 34.1 18.39gUEB020I41
K21B00D C2021 01 16.41333308 18 37.98 +30 12 37.7 18.14gUEB020I41
K21B00D C2021 01 16.41368008 18 35.23 +30 13 01.8 18.14gUEB020I41
K21B00D C2021 01 16.43458308 15 53.84 +30 36 16.3 17.74RUEB020I41
K21B00D C2021 01 16.43493008 15 51.00 +30 36 40.1 17.74RUEB020I41
K21B00D C2021 01 16.47571808 10 12.71 +31 24 03.7 17.51RUEB020I41
K21B00D C2021 01 16.47606508 10 09.71 +31 24 27.6 17.51RUEB020I41
K21B00D C2021 01 16.47618108 10 08.54 +31 24 38.5 17.60RUEB020I41
K21B00D C2021 01 16.47652808 10 05.50 +31 25 03.7 17.60RUEB020I41
K21B00D KC2021 01 16.73484907 19 18.88 +37 41 05.3 17.6 GVEB020595
K21B00D KC2021 01 16.73740407 18 34.74 +37 45 34.5 17.5 GVEB020595
K21B00D KC2021 01 16.75887407 12 09.47 +38 23 33.5 17.1 GVEB020595
K21B00D KC2021 01 16.78633907 03 18.92 +39 12 15.5 17.4 GVEB020204
K21B00D KC2021 01 16.78994507 02 05.45 +39 18 44.7 VEB020204
K21B00D HC2021 01 16.79354207 00 51.34 +39 25 12.8 VEB020204
K21B00D KC2021 01 16.80400906 57 10.64 +39 44 43.9 17.2 GVEB020104
K21B00D KC2021 01 16.80727506 56 00.00 +39 50 37.3 VEB020104
K21B00D hC2021 01 16.90917906 12 30.51 +42 44 33.2 17.4 GVEB020L01
K21B00D hC2021 01 16.90967406 12 15.84 +42 45 18.9 17.4 GVEB020L01
K21B00D hC2021 01 16.91097806 11 36.96 +42 47 19.0 17.4 GVEB020L01
K21B00D hC2021 01 16.91140406 11 24.25 +42 47 57.4 17.5 GVEB020L01
K21B00D hC2021 01 16.91182706 11 11.57 +42 48 36.3 17.5 GVEB020L01
K21B00D hC2021 01 16.91235406 10 55.80 +42 49 24.3 17.6 GVEB020L01
K21B00D hC2021 01 16.91288406 10 39.87 +42 50 12.6 17.8 GVEB020L01
K21B00D NC2021 01 16.91331906 10 26.86 +42 50 52.1 17.4 GVEB020L01
K21B00D KC2021 01 17.01758 05 12 56.92 +44 52 06.6 17.4 GVEB020W34
K21B00D KC2021 01 17.04481 04 55 00.92 +45 06 41.9 17.0 GVEB020W34
K21B00D KC2021 01 17.04836 04 52 37.29 +45 07 48.7 17.2 GVEB020W34
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
595 Farra d'Isonzo. Observers G. Panterotto, E. Pettarin. Measurer E.
Pettarin. 0.40-m f/5.15 reflector + CCD.
I41 Palomar Mountain--ZTF. Observers B. T. Bolin, V. Bhalerao, C. M.
Copperwheat, K. P. Deshmukh, C.-Y. Hsu, Z.-Y. Lin, J. Purdum, K. Sharma,
C. Zhai, Z. T. F. Collaboration. Measurers B. T. Bolin, D. A. Duev, H.-W.
Lin, F. J. Masci, Q.-Z. Ye. 1.2-m f/2.4 Schmidt.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. Measurers
R. L. Flynn, J. Gerlach. 0.36-m Schmidt-Cassegrain + CCD.
Orbital elements:
2021 BD Earth MOID = 0.0027 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 265.46364 (2000.0) P Q
n 1.22816797 Peri. 151.29219 -0.09517907 +0.99465667
a 0.8635700 Node 113.22212 -0.92142959 -0.07282814
e 0.7853051 Incl. 2.49392 -0.37670740 -0.07317214
P 0.80 H 26.9 G 0.15 U 8
Residuals in seconds of arc
210116 I41 0.0 0.5+ 210116 595 0.4+ 0.6- 210116 L01 0.2+ 0.4+
210116 I41 0.8+ 0.7- 210116 595 0.0 0.5- 210116 L01 0.3+ 0.2-
210116 I41 1.0- 1.2+ 210116 595 0.2+ 1.1- 210116 L01 0.0 0.0
210116 I41 (2.6- 2.5+) 210116 204 0.7- 0.2+ 210116 L01 0.1+ 0.0
210116 I41 1.0+ 0.4+ 210116 204 0.7- 0.1+ 210116 L01 0.3- 0.0
210116 I41 0.2- 0.7+ 210116 204 0.2- 0.3- 210116 L01 0.3+ 0.0
210116 I41 0.1+ 0.0 210116 104 0.0 0.4+ 210117 W34 0.6- 0.0
210116 I41 0.3+ 1.0- 210116 104 (1.7- 1.1+) 210117 W34 (3.0- 0.5+)
210116 I41 (1.8- 1.5+) 210116 L01 0.0 0.2- 210117 W34 0.8+ 0.0
210116 I41 (2.1- 1.8+) 210116 L01 0.4+ 0.0
Ephemeris:
2021 BD a,e,i = 0.86, 0.79, 2 q = 0.1854
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 18 09 42 20.9 +12 30 31 0.4531 1.2859 122.6 40.2 27.3
...
2021 01 02 09 48 39.5 +12 17 02 0.2238 1.1555 136.3 36.0 25.4
...
2021 01 10 09 45 41.8 +13 20 11 0.1052 1.0718 145.5 31.3 23.5
...
2021 01 16 08 52 30.9 +24 33 21 0.01848 1.0016 165.4 14.3 19.0
2021 01 17 05 23 20.8 +44 37 09 0.0070380.9892 140.7 39.1 17.7
2021 01 18 23 18 46.3 +09 23 50 0.01347 0.9766 57.4 121.9 22.5
...
2021 01 24 22 06 49.0 -08 21 11 0.09959 0.8967 27.0 150.1 30.1
...
2021 02 01 21 58 20.9 -10 04 34 0.2196 0.7769 16.3 159.2 33.8
...
2021 02 16 21 48 47.6 -11 39 25 0.4884 0.5003 2.3 175.4
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-B20
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