MPEC 2021-A156 : 2021 AF5
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M.P.E.C. 2021-A156 Issued 2021 January 12, 19:56 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 AF5
Observations:
K21A05F* C2021 01 11.09327302 06 46.75 +04 45 42.0 20.29GVEA156G96
K21A05F C2021 01 11.09899302 06 47.44 +04 46 35.2 19.94GVEA156G96
K21A05F C2021 01 11.10470102 06 48.15 +04 47 28.9 20.44GVEA156G96
K21A05F C2021 01 11.11041102 06 48.84 +04 48 21.7 19.80GVEA156G96
K21A05F KC2021 01 11.18133602 06 58.04 +04 59 19.7 20.11GVEA156I52
K21A05F KC2021 01 11.18281502 06 58.25 +04 59 34.0 20.30GVEA156I52
K21A05F KC2021 01 11.18429502 06 58.43 +04 59 47.6 20.21GVEA156I52
K21A05F KC2021 01 11.18577302 06 58.61 +05 00 01.5 20.26GVEA156I52
K21A05F C2021 01 11.27845502 07 19.873+05 15 08.45 20.37wUEA156F52
K21A05F C2021 01 11.29003102 07 21.296+05 16 55.03 20.25wUEA156F52
K21A05F KC2021 01 11.73895 02 09 01.19 +06 23 55.1 20.3 GVEA156595
K21A05F KC2021 01 11.74575902 09 02.08 +06 24 59.0 20.0 GVEA156L01
K21A05F KC2021 01 11.74754602 09 02.35 +06 25 15.2 20.1 GVEA156L01
K21A05F KC2021 01 11.74930802 09 02.57 +06 25 31.2 20.1 GVEA156L01
K21A05F KC2021 01 11.75105202 09 02.79 +06 25 47.3 20.3 GVEA156L01
K21A05F KC2021 01 11.76134002 09 04.86 +06 27 24.2 19.3 GVEA156K63
K21A05F KC2021 01 11.76769802 09 05.72 +06 28 22.3 19.1 GVEA156K63
K21A05F KC2021 01 11.77728802 09 07.04 +06 29 48.0 19.6 GVEA156K63
K21A05F KC2021 01 11.78817 02 09 07.91 +06 31 19.7 20.0 GVEA156595
K21A05F KC2021 01 11.80682402 09 11.33 +06 34 09.6 20.1 GVEA156203
K21A05F KC2021 01 11.81875902 09 13.00 +06 35 55.2 19.9 GVEA156587
K21A05F KC2021 01 11.81901402 09 13.04 +06 35 57.5 20.0 GVEA156587
K21A05F KC2021 01 11.81926902 09 13.07 +06 35 59.6 20.1 GVEA156587
K21A05F KC2021 01 11.82907102 09 14.49 +06 37 28.9 20.1 GVEA156203
K21A05F KC2021 01 11.84908102 09 17.32 +06 40 28.0 19.6 GVEA156203
K21A05F KC2021 01 12.06870302 10 10.01 +07 14 04.6 19.88GVEA156I52
K21A05F KC2021 01 12.06968402 10 10.12 +07 14 13.7 19.55GVEA156I52
K21A05F KC2021 01 12.07066602 10 10.26 +07 14 22.3 19.96GVEA156I52
K21A05F KC2021 01 12.07164702 10 10.37 +07 14 31.2 19.86GVEA156I52
K21A05F KC2021 01 12.08704 02 10 09.03 +07 16 24.9 20.2 GVEA156H36
K21A05F KC2021 01 12.09327 02 10 09.80 +07 17 20.3 20.1 GVEA156H36
K21A05F KC2021 01 12.10458 02 10 11.26 +07 19 00.7 20.6 GVEA156H36
K21A05F KC2021 01 12.11037402 10 14.04 +07 20 06.3 20.4 VqEA156858
K21A05F KC2021 01 12.11081 02 10 12.07 +07 19 55.9 20.2 GVEA156H36
K21A05F KC2021 01 12.11594402 10 14.73 +07 20 55.6 20.6 VqEA156858
K21A05F KC2021 01 12.12149402 10 15.42 +07 21 44.3 20.4 VqEA156858
K21A05F KC2021 01 12.13789502 10 18.36 +07 24 19.6 20.03GVEA156I52
K21A05F KC2021 01 12.13888002 10 18.47 +07 24 28.0 19.69GVEA156I52
K21A05F KC2021 01 12.14085002 10 18.72 +07 24 45.4 19.93GVEA156I52
K21A05F KC2021 01 12.77403902 12 29.18 +08 56 21.5 20.0 GVEA156104
K21A05F KC2021 01 12.77999602 12 29.92 +08 57 13.0 19.5 GVEA156104
K21A05F KC2021 01 12.78595202 12 30.72 +08 58 03.8 20.0 GVEA156104
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
587 Sormano. Observers A. Carcano, E. Colzani. Measurer P. Sicoli. 0.5-m
f/6.8 reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, T. Dukes, T. Lowe, A.
Schultz, M. Willman. Measurers K. Chambers, S. Chastel, T. de Boer, L.
Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer H. Groeller. 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 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. 1.0-m
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.
Orbital elements:
2021 AF5 Earth MOID = 0.0087 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 116.69913 (2000.0) P Q
n 1.09356780 Peri. 207.33282 +0.76440600 +0.64114307
a 0.9330514 Node 112.62369 -0.57727136 +0.72755134
e 0.0739401 Incl. 4.22246 -0.28712582 +0.24414056
P 0.90 H 24.8 G 0.15 U 7
Residuals in seconds of arc
210111 G96 0.0 0.2- 210111 L01 0.2- 0.3+ 210112 I52 0.1- 0.2-
210111 G96 0.2- 0.3- 210111 K63 0.6+ 0.1+ 210112 H36 0.5+ 0.0
210111 G96 0.2- 0.1+ 210111 K63 0.7+ 0.8+ 210112 H36 0.0 0.2+
210111 G96 0.4- 0.3- 210111 K63 1.3+ 0.1- 210112 H36 0.2- 0.5+
210111 I52 0.1+ 0.3- 210111 595 0.2- 0.3- 210112 858 0.2- 0.4+
210111 I52 0.2+ 0.4+ 210111 203 0.1+ 0.2+ 210112 H36 0.3- 0.6+
210111 I52 0.1- 0.3+ 210111 587 0.4+ 0.3- 210112 858 0.2- 0.3+
210111 I52 0.5- 0.5+ 210111 587 0.5+ 0.2- 210112 858 0.3- 0.1-
210111 F52 0.2- 0.1+ 210111 587 0.4+ 0.4- 210112 I52 0.1- 0.0
210111 F52 0.1- 0.2+ 210111 203 0.7+ 0.2- 210112 I52 0.2- 0.3-
210111 595 0.4- 0.4- 210111 203 0.2- 0.2- 210112 I52 0.1- 0.3-
210111 L01 0.2- 0.1- 210112 I52 0.2- 0.5- 210112 104 0.2+ 0.1-
210111 L01 0.3+ 0.1- 210112 I52 0.3- 0.2- 210112 104 0.4- 0.3+
210111 L01 0.0 0.0 210112 I52 0.0 0.3- 210112 104 0.1- 0.1+
Ephemeris:
2021 AF5 a,e,i = 0.93, 0.07, 4 q = 0.8641
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 13 22 24 19.8 -67 16 49 0.04894 0.9634 63.2 114.2 22.6
...
2020 12 28 01 00 56.3 -38 33 32 0.03343 0.9791 81.8 96.3 20.8
...
2021 01 05 01 43 18.3 -13 01 15 0.03268 0.9861 94.0 84.1 20.3
...
2021 01 11 02 06 27.4 +04 32 54 0.03637 0.9906 100.3 77.7 20.3
2021 01 12 02 09 54.2 +07 05 25 0.03728 0.9913 101.0 76.9 20.3
2021 01 13 02 13 15.8 +09 30 37 0.03825 0.9919 101.6 76.3 20.4
...
2021 01 19 02 32 03.5 +21 36 10 0.04523 0.9955 103.6 73.9 20.6
...
2021 01 27 02 54 47.9 +32 34 08 0.05633 0.9992 103.4 73.5 21.1
...
2021 02 11 03 34 42.3 +44 10 57 0.07869 1.0025 99.2 76.4 22.0
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-A156
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