MPEC 2021-C03 : 2021 BK3
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M.P.E.C. 2021-C03 Issued 2021 February 1, 14:31 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 BK3
Observations:
K21B03K* C2021 01 31.19342006 43 58.86 +32 40 37.6 17.49GVEC003703
K21B03K C2021 01 31.19906206 44 21.57 +32 39 44.5 18.01GVEC003703
K21B03K C2021 01 31.20478706 44 44.37 +32 38 51.8 17.74GVEC003703
K21B03K KC2021 01 31.23822006 46 57.72 +32 33 30.2 17.63GVEC003I52
K21B03K KC2021 01 31.23900006 47 00.81 +32 33 22.7 17.65GVEC003I52
K21B03K KC2021 01 31.24057506 47 07.05 +32 33 07.1 17.49GVEC003I52
K21B03K C2021 01 31.25762 06 48 15.46 +32 29 25.8 17.5 rEC003718
K21B03K C2021 01 31.25818 06 48 17.77 +32 29 19.8 17.7 rEC003718
K21B03K C2021 01 31.25874 06 48 19.94 +32 29 14.2 17.6 rEC003718
K21B03K C2021 01 31.25931 06 48 22.29 +32 29 08.5 18.2 rEC003718
K21B03K C2021 01 31.26100 06 48 29.01 +32 28 52.7 17.8 rEC003718
K21B03K C2021 01 31.26157 06 48 31.12 +32 28 46.7 18.1 rEC003718
K21B03K C2021 01 31.26213 06 48 33.18 +32 28 40.6 17.8 rEC003718
K21B03K KC2021 01 31.27209406 49 11.41 +32 27 51.2 17.44GVEC003I52
K21B03K KC2021 01 31.27288306 49 14.53 +32 27 43.1 17.50GVEC003I52
K21B03K KC2021 01 31.27366706 49 17.61 +32 27 35.0 17.69GVEC003I52
K21B03K KC2021 01 31.27445406 49 20.69 +32 27 26.9 17.48GVEC003I52
K21B03K KC2021 01 31.37712306 55 59.98 +32 08 59.0 17.48GVEC003I52
K21B03K KC2021 01 31.37791106 56 03.02 +32 08 50.1 17.58GVEC003I52
K21B03K KC2021 01 31.37869906 56 06.06 +32 08 41.1 17.58GVEC003I52
K21B03K KC2021 01 31.37948806 56 09.09 +32 08 32.2 17.58GVEC003I52
K21B03K C2021 01 31.51484607 05 16.92 +31 44 47.6 18.0 VqEC003900
K21B03K C2021 01 31.51712807 05 25.27 +31 44 22.7 18.0 VqEC003900
K21B03K C2021 01 31.51941007 05 33.62 +31 43 57.8 17.2 VqEC003900
K21B03K C2021 01 31.57154007 09 01.98 +31 33 27.0 17.8 rVEC003N51
K21B03K C2021 01 31.57297507 09 07.40 +31 33 12.0 17.8 rVEC003N51
K21B03K C2021 01 31.57651707 09 20.11 +31 32 36.1 17.8 rVEC003N51
K21B03K C2021 01 31.62427 07 12 05.95 +31 23 03.8 17.7 GVEC003N88
K21B03K C2021 01 31.62458 07 12 07.06 +31 23 00.3 17.8 GVEC003N88
K21B03K C2021 01 31.62494 07 12 08.32 +31 22 56.4 17.8 GVEC003N88
K21B03K C2021 01 31.62529 07 12 09.58 +31 22 52.5 17.9 GVEC003N88
K21B03K C2021 01 31.62556 07 12 10.53 +31 22 49.4 17.6 GVEC003N88
K21B03K KC2021 01 31.72034707 17 58.02 +31 02 45.7 16.6 RVEC003K61
K21B03K KC2021 01 31.72099507 18 00.31 +31 02 38.2 17.0 RVEC003K61
K21B03K KC2021 01 31.72149707 18 02.05 +31 02 32.6 16.9 RVEC003K61
K21B03K KC2021 01 31.72214307 18 04.27 +31 02 25.6 16.9 RVEC003K61
K21B03K C2021 01 31.72259 07 18 05.43 +31 02 40.9 16.9 RoEC003K88
K21B03K C2021 01 31.72292 07 18 06.53 +31 02 36.6 17.0 RoEC003K88
K21B03K C2021 01 31.72325 07 18 07.66 +31 02 33.4 17.0 RoEC003K88
K21B03K KC2021 01 31.72328907 18 08.26 +31 02 12.7 17.0 RVEC003K61
K21B03K C2021 01 31.72357 07 18 08.82 +31 02 29.5 16.9 RoEC003K88
K21B03K C2021 01 31.72390 07 18 09.94 +31 02 26.0 16.9 RoEC003K88
K21B03K C2021 01 31.72423 07 18 11.04 +31 02 22.7 16.9 RoEC003K88
K21B03K KC2021 01 31.72450207 18 12.46 +31 01 59.3 16.9 RVEC003K61
K21B03K C2021 01 31.72455 07 18 12.18 +31 02 18.8 16.9 RoEC003K88
K21B03K C2021 01 31.72488 07 18 13.31 +31 02 15.3 17.0 RoEC003K88
K21B03K C2021 01 31.72521 07 18 14.45 +31 02 11.7 16.8 RoEC003K88
K21B03K C2021 01 31.72554 07 18 15.58 +31 02 08.1 16.9 RoEC003K88
K21B03K C2021 01 31.72652 07 18 19.01 +31 01 56.9 17.2 RoEC003K88
K21B03K C2021 01 31.72685 07 18 20.17 +31 01 53.1 17.1 RoEC003K88
K21B03K C2021 01 31.72718 07 18 21.20 +31 01 49.7 17.2 RoEC003K88
K21B03K KC2021 01 31.73245 07 18 39.80 +31 00 24.5 17.6 RVEC003113
K21B03K KC2021 01 31.73494 07 18 50.77 +31 00 25.7 17.9 GVEC003K83
K21B03K KC2021 01 31.73588 07 18 51.64 +30 59 46.1 17.3 RVEC003113
K21B03K KC2021 01 31.73643 07 18 55.90 +31 00 09.2 18.2 GVEC003K83
K21B03K KC2021 01 31.73793 07 19 01.19 +30 59 52.1 17.8 GVEC003K83
K21B03K KC2021 01 31.73930 07 19 03.39 +30 59 08.0 17.5 RVEC003113
K21B03K KC2021 01 31.73943 07 19 06.31 +30 59 35.1 17.8 GVEC003K83
K21B03K KC2021 01 31.74275 07 19 15.27 +30 58 28.3 17.2 RVEC003113
K21B03K KC2021 01 31.74515707 19 26.16 +30 58 26.2 17.6 GVEC003K78
K21B03K KC2021 01 31.75531307 20 02.89 +30 56 30.2 18.0 GVEC003B49
K21B03K KC2021 01 31.75838007 20 13.44 +30 55 55.5 17.8 GVEC003B49
K21B03K KC2021 01 31.76145807 20 23.93 +30 55 20.8 18.0 GVEC003B49
K21B03K KC2021 01 31.76988507 20 50.57 +30 53 48.4 18.0 GVEC003K78
K21B03K KC2021 01 31.80447 07 22 44.07 +30 46 38.9 17.8 GVEC003C43
K21B03K KC2021 01 31.80599 07 22 49.14 +30 46 21.5 18.1 GVEC003C43
K21B03K KC2021 01 31.80751 07 22 54.19 +30 46 03.5 18.1 GVEC003C43
K21B03K KC2021 01 31.80913 07 22 59.62 +30 45 45.2 17.8 GVEC003C43
K21B03K KC2021 01 31.82872407 24 05.84 +30 42 24.3 17.6 GVEC003595
K21B03K KC2021 01 31.83005607 24 10.21 +30 42 08.6 17.6 GVEC003595
K21B03K KC2021 01 31.83137207 24 14.48 +30 41 53.3 17.7 GVEC003595
K21B03K KC2021 01 31.84898807 25 13.35 +30 38 33.0 17.5 GVEC003104
K21B03K KC2021 01 31.85246107 25 24.72 +30 37 52.0 17.5 GVEC003104
K21B03K KC2021 01 31.85709407 25 39.79 +30 36 56.5 17.3 GVEC003104
K21B03K KC2021 01 31.86218 07 25 56.20 +30 35 58.3 17.5 GVEC003G17
K21B03K KC2021 01 31.86898 07 26 18.17 +30 34 37.7 17.9 GVEC003G17
K21B03K KC2021 01 31.87576 07 26 40.15 +30 33 15.4 18.1 GVEC003G17
K21B03K KC2021 01 31.89527 07 27 42.89 +30 29 18.6 17.6 GVEC003L39
K21B03K KC2021 01 31.89664 07 27 47.30 +30 29 02.7 17.8 GVEC003L39
K21B03K KC2021 01 31.89815 07 27 52.16 +30 28 44.1 18.4 GVEC003L39
K21B03K hC2021 01 31.99895607 33 08.59 +30 07 35.5 17.8 GVEC003L01
K21B03K hC2021 02 01.00094907 33 14.77 +30 07 09.8 18.0 GVEC003L01
K21B03K KC2021 02 01.05054207 35 47.87 +29 56 30.9 17.6 GVEC003L01
K21B03K KC2021 02 01.05173907 35 51.54 +29 56 15.6 17.7 GVEC003L01
K21B03K hC2021 02 01.05263307 35 54.26 +29 56 03.5 17.8 GVEC003L01
K21B03K IC2021 02 01.05372407 35 57.61 +29 55 49.7 17.7 GVEC003L01
K21B03K hC2021 02 01.05432907 35 59.49 +29 55 41.7 17.9 GVEC003L01
K21B03K C2021 02 01.09538907 38 40.20 +29 47 56.5 17.64GVEC003G96
K21B03K C2021 02 01.10164007 38 58.98 +29 46 43.1 17.71GVEC003G96
K21B03K C2021 02 01.10681707 39 14.53 +29 45 42.2 17.90GVEC003G96
K21B03K C2021 02 01.11200807 39 30.09 +29 44 40.7 17.88GVEC003G96
K21B03K KC2021 02 01.12296307 40 02.75 +29 42 30.6 17.27GVEC003I52
K21B03K KC2021 02 01.12354207 40 04.48 +29 42 23.8 17.34GVEC003I52
K21B03K KC2021 02 01.12411907 40 06.20 +29 42 16.8 17.32GVEC003I52
K21B03K C2021 02 01.30812 07 48 49.51 +29 03 42.5 17.2 rEC003718
K21B03K C2021 02 01.30869 07 48 51.02 +29 03 34.9 17.3 rEC003718
K21B03K C2021 02 01.30981 07 48 54.09 +29 03 19.8 17.9 rEC003718
K21B03K C2021 02 01.31037 07 48 55.68 +29 03 12.5 17.6 rEC003718
K21B03K C2021 02 01.31093 07 48 57.21 +29 03 06.1 17.5 rEC003718
K21B03K C2021 02 01.31150 07 48 58.78 +29 02 58.0 17.6 rEC003718
K21B03K C2021 02 01.31206 07 49 00.25 +29 02 51.9 17.6 rEC003718
K21B03K C2021 02 01.31262 07 49 01.75 +29 02 45.2 17.5 rEC003718
K21B03K C2021 02 01.31318 07 49 03.29 +29 02 37.5 18.0 rEC003718
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
113 Volkssternwarte Drebach, Schoenbrunn. Observer G. Lehmann. 0.5-m f/4.6
reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey. Observer K. W. Wierzchos. 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. 0.68-m Schmidt + 10K
CCD.
718 Tooele. Observer P. Wiggins. 0.35-m f/5.5 Schmidt-Cassegrain + CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
B49 Paus Observatory, Sabadell. Observer J. Camarasa. 0.30-m f/4 reflector +
CCD.
C43 Hoyerswerda. Observer P. Lindner. 0.30-m f/6.3 Schmidt-Cassegrain + CCD.
G17 BAS Observatory, Scandicci. Observer L. Grazzini. 0.20-m f/10 Schmidt-
Cassegrain + CCD + f/6.3 focal reducer.
G96 Mt. Lemmon Survey. Observer 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. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers R. A. Kowalski, K. W.
Wierzchos. 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.
K61 Rokycany Observatory. Observer M. Adamovsky. 0.51-m f/6.8 reflector +
CCD.
K78 iota Scorpii Observatory, La Spezia. Observers G. Scarfi, L. Sannino.
0.40-m f/6 Ritchey-Chretien + CCD.
K83 Beppe Forti Astronomical Observatory, Montelupo. Observers M. Tombelli,
A. Mazzanti, E. Venticinque. Measurers M. Tombelli, G. Interrante, F.
Bernardi. 0.40-m f/8 Ritchey-Chretien + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, F. Hrzenjak. Measurer
K. Korlevic. 1.0-m f/2.9 reflector + CCD.
L39 Osservatorio Spica, Signa. Observers M. Bertini, L. Franchini. 0.30-m
Newtonian reflector + CCD.
N51 GROWTH India Telescope, IAO, Hanle. Observers K. Sharma, H. Kumar, J.
Stanzin, V. Bhalerao, G. C. Anupama, S. Barway. Measurer K. Sharma.
0.70-m f/6.5 Corrected Dall-Kirkham + CCD.
N88 Xingming Observatory #3, Nanshan. Observer X. Gao. Measurer Q.-Z. Ye.
0.6-m f/8 Ritchey-Chretien + CCD.
Orbital elements:
2021 BK3 Earth MOID = 0.0044 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 355.85333 (2000.0) P Q
n 0.23032633 Peri. 118.26678 -0.07065454 -0.99749404
a 2.6357668 Node 335.78397 +0.91201420 -0.06310325
e 0.6482078 Incl. 0.51454 +0.40402727 -0.03199394
P 4.28 H 24.70 G 0.15 U 7
Residuals in seconds of arc
210131 703 0.1- 0.2+ 210131 K61 0.7+ 0.1- 210131 595 0.2+ 0.1+
210131 703 0.6+ 0.6- 210131 K88 0.3+ 0.1- 210131 595 0.0+ 0.1+
210131 703 1.4- 0.3+ 210131 K88 0.2- 0.7- 210131 595 0.8- 0.2+
210131 I52 0.2+ 0.2- 210131 K88 0.4- 0.2- 210131 104 0.2- 0.0+
210131 I52 0.1+ 0.0- 210131 K61 0.8+ 0.2- 210131 104 0.3+ 0.2+
210131 I52 0.1+ 0.1- 210131 K88 0.3+ 0.5- 210131 104 0.1+ 0.3-
210131 718 0.1- 0.4+ 210131 K88 0.0+ 0.3- 210131 G17 0.1- 0.1+
210131 718 1.1+ 0.0+ 210131 K88 0.6- 0.1+ 210131 G17 1.0- 0.8+
210131 718 0.5+ 0.1+ 210131 K61 0.6+ 0.0+ 210131 G17 0.1- 0.2-
210131 718 1.7+ 0.0+ 210131 K88 0.1- 0.2- 210131 L39 (0.3- 0.9-)
210131 718 2.1+ 1.2+ 210131 K88 0.3- 0.0- 210131 L39 0.0- 0.2-
210131 718 0.3+ 0.9+ 210131 K88 0.3- 0.1+ 210131 L39 0.3+ 0.4-
210131 718 1.8- 0.4+ 210131 K88 0.4- 0.2+ 210131 L01 0.6- 0.4-
210131 I52 0.0+ 0.1- 210131 K88 0.1+ 0.0- 210201 L01 0.7- 0.6-
210131 I52 0.2+ 0.1- 210131 K88 0.3+ 0.1- 210201 L01 0.5+ 0.2+
210131 I52 0.2+ 0.1- 210131 K88 1.1- 0.2+ 210201 L01 0.4+ 0.4+
210131 I52 0.1+ 0.2- 210131 113 0.7+ 0.4- 210201 L01 0.1+ 0.0-
210131 I52 0.1- 0.0+ 210131 K83 0.4- 0.2+ 210201 L01 0.2+ 0.3+
210131 I52 0.1- 0.0- 210131 113 0.4+ 0.1- 210201 L01 0.4+ 0.3+
210131 I52 0.1- 0.1- 210131 K83 0.5- 0.4+ 210201 G96 0.3+ 0.1-
210131 I52 0.2- 0.1- 210131 K83 1.0+ 0.0+ 210201 G96 0.4- 0.2+
210131 900 0.5- 0.3+ 210131 113 0.2- 0.3+ 210201 G96 0.3- 0.3+
210131 900 0.1+ 0.4+ 210131 K83 0.4+ 0.2- 210201 G96 0.2- 0.1+
210131 900 0.6+ 0.5+ 210131 113 0.3- 0.5- 210201 I52 0.0+ 0.1-
210131 N51 1.6- 0.4- 210131 K78 1.1+ 0.8- 210201 I52 0.2+ 0.1-
210131 N51 1.4+ 0.2- 210131 B49 0.3- 0.4+ 210201 I52 0.2+ 0.2-
210131 N51 0.3+ 1.6+ 210131 B49 0.2+ 0.1+ 210201 718 1.4+ 0.5+
210131 N88 0.1- 0.1- 210131 B49 0.2+ 0.1+ 210201 718 0.6+ 0.1+
210131 N88 0.0+ 0.0- 210131 B49 0.3- 0.2- 210201 718 0.6+ 0.7-
210131 N88 0.0- 0.1+ 210131 B49 0.3- 0.2- 210201 718 1.3+ 0.8-
210131 N88 0.4+ 0.0+ 210131 K78 0.7+ 0.4+ 210201 718 1.2+ 0.1-
210131 N88 0.5+ 0.0+ 210131 C43 0.5- 0.1+ 210201 718 1.3+ 0.9-
210131 K61 0.7+ 0.1- 210131 C43 0.5- 0.4+ 210201 718 0.4+ 0.1+
210131 K61 1.1+ 0.3- 210131 C43 0.9- 0.2+ 210201 718 0.1- 0.6+
210131 K61 1.0+ 0.3- 210131 C43 0.5- 0.8+ 210201 718 0.0- 0.1+
Ephemeris:
2021 BK3 a,e,i = 2.64, 0.65, 1 q = 0.9272
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 02 23 13 51.5 -02 20 38 0.1805 0.9277 67.0 102.7 24.6
...
2021 01 17 23 47 27.2 +02 55 04 0.08606 0.9458 61.6 113.9 23.7
...
2021 01 25 00 57 26.7 +14 02 17 0.03782 0.9746 73.8 104.0 21.4
...
2021 01 31 06 30 01.9 +33 08 59 0.02277 1.0037 144.1 35.1 17.9
2021 02 01 07 33 19.0 +30 09 18 0.02587 1.0091 156.7 22.7 17.9
2021 02 02 08 17 55.9 +26 42 22 0.03012 1.0147 165.8 13.8 17.9
...
2021 02 08 09 55 57.8 +15 04 01 0.06499 1.0509 172.8 6.7 19.4
...
2021 02 16 10 24 29.2 +10 38 32 0.1188 1.1060 173.2 6.1 20.8
...
2021 03 03 10 38 04.6 +08 19 11 0.2333 1.2240 175.6 3.5 22.3
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C03
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