MPEC 2021-B113 : 2021 BZ2
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M.P.E.C. 2021-B113 Issued 2021 January 22, 14:06 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 BZ2
Observations:
K21B02Z* C2021 01 18.45567210 35 55.87 +23 08 24.5 21.74GVEB113G96
K21B02Z C2021 01 18.46079310 35 55.01 +23 08 11.5 21.27GVEB113G96
K21B02Z C2021 01 18.46591510 35 54.13 +23 07 57.9 21.40GVEB113G96
K21B02Z C2021 01 18.47293810 35 52.93 +23 07 40.4 21.06GVEB113G96
K21B02Z KC2021 01 18.52344010 35 44.36 +23 05 28.0 21.29GVEB113I52
K21B02Z KC2021 01 18.52679810 35 43.81 +23 05 19.1 21.67GVEB113I52
K21B02Z KC2021 01 18.53015710 35 43.21 +23 05 09.8 20.71GVEB113I52
K21B02Z KC2021 01 20.27237010 31 02.52 +21 46 45.2 21.5 VuEB113H21
K21B02Z KC2021 01 20.27576110 31 01.88 +21 46 35.2 21.4 VuEB113H21
K21B02Z KC2021 01 20.27818210 31 01.38 +21 46 28.7 21.5 VuEB113H21
K21B02Z mC2021 01 22.42434710 24 20.63 +19 59 27.3 21.32GVEB113G96
K21B02Z KC2021 01 22.42498910 24 20.48 +19 59 25.2 20.94GVEB113I52
K21B02Z mC2021 01 22.42667410 24 20.12 +19 59 19.7 20.91GVEB113G96
K21B02Z KC2021 01 22.42751210 24 19.93 +19 59 17.1 21.21GVEB113I52
K21B02Z mC2021 01 22.42900510 24 19.62 +19 59 12.0 20.74GVEB113G96
K21B02Z KC2021 01 22.43003410 24 19.37 +19 59 09.2 21.04GVEB113I52
K21B02Z KC2021 01 22.43255610 24 18.82 +19 59 00.6 20.55GVEB113I52
Observer details:
G96 Mt. Lemmon Survey. Observers D. C. Fuls, 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.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. Rankin, R. A.
Kowalski. 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.
Orbital elements:
2021 BZ2 Earth MOID = 0.0730 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 201.35310 (2000.0) P Q
n 0.93295452 Peri. 310.63372 -0.11975866 +0.97609501
a 1.0372794 Node 311.51053 -0.82201665 -0.19993365
e 0.1343399 Incl. 14.01690 -0.55672839 +0.08523538
P 1.06 H 23.8 G 0.15 U 7
Residuals in seconds of arc
210118 G96 0.0 0.3- 210118 I52 0.4- 0.2- 210122 G96 0.1+ 0.0
210118 G96 0.2+ 0.0 210120 H21 0.2+ 0.3+ 210122 I52 0.0 0.1+
210118 G96 0.1+ 0.3- 210120 H21 0.2+ 0.3- 210122 G96 0.2+ 0.3-
210118 G96 0.1+ 0.4+ 210120 H21 0.4- 0.0 210122 I52 0.1- 0.2+
210118 I52 0.1- 0.2+ 210122 G96 0.1+ 0.2+ 210122 I52 0.1- 0.3-
210118 I52 0.1+ 0.2+ 210122 I52 0.1- 0.1+
Ephemeris:
2021 BZ2 a,e,i = 1.04, 0.13, 14 q = 0.8979
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 23 10 53 32.7 +34 14 30 0.3186 1.1647 117.3 48.6 23.5
...
2021 01 07 10 54 03.5 +29 22 06 0.2361 1.1495 130.0 40.9 22.6
...
2021 01 15 10 43 37.7 +25 23 45 0.1953 1.1390 139.3 34.2 22.0
...
2021 01 21 10 28 52.2 +21 12 09 0.1679 1.1300 148.1 27.4 21.4
2021 01 22 10 25 44.5 +20 21 51 0.1637 1.1285 149.7 26.1 21.3
2021 01 23 10 22 24.6 +19 28 48 0.1596 1.1269 151.4 24.7 21.2
...
2021 01 29 09 57 59.7 +13 05 17 0.1380 1.1169 161.9 15.9 20.6
...
2021 02 06 09 13 58.8 +01 32 45 0.1196 1.1024 165.8 12.7 20.2
...
2021 02 21 07 37 44.8 -21 23 35 0.1243 1.0722 129.4 45.4 21.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-B113
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