MPEC 2021-A172 : 2021 AS5
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M.P.E.C. 2021-A172 Issued 2021 January 13, 20:35 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 AS5
Observations:
K21A05S* C2021 01 12.29899704 02 27.659-13 24 59.33 20.47wUEA172F51
K21A05S C2021 01 12.31292404 02 41.642-13 25 10.96 20.20wUEA172F51
K21A05S C2021 01 12.32686504 02 55.692-13 25 22.09 20.45wUEA172F51
K21A05S KC2021 01 13.05472 04 17 28.40 -13 35 40.7 20.4 GVEA172H36
K21A05S KC2021 01 13.08692 04 18 04.48 -13 36 06.4 20.2 GVEA172H36
K21A05S KC2021 01 13.08888 04 18 02.28 -13 35 56.8 20.2 GVEA172W34
K21A05S |C2021 01 13.09112 04 18 00.74 -13 30 00.2 20.4 VuEA172807
K21A05S KC2021 01 13.09346 04 18 07.35 -13 35 59.1 20.3 GVEA172W34
K21A05S |C2021 01 13.09402 04 18 03.94 -13 30 01.7 20.0 VuEA172807
K21A05S |C2021 01 13.09685 04 18 07.07 -13 30 03.0 20.0 VuEA172807
K21A05S KC2021 01 13.09917 04 18 13.61 -13 36 02.6 20.6 GVEA172W34
K21A05S KC2021 01 13.11677204 18 41.27 -13 36 09.6 20.2 VqEA172858
K21A05S KC2021 01 13.11819204 18 44.57 -13 35 58.2 20.05GVEA172I52
K21A05S KC2021 01 13.11918604 18 45.66 -13 35 59.1 19.91GVEA172I52
K21A05S KC2021 01 13.12018004 18 46.76 -13 35 59.6 19.67GVEA172I52
K21A05S KC2021 01 13.12114604 18 40.10 -13 36 31.3 20.7 VuEA172H21
K21A05S KC2021 01 13.12447804 18 49.88 -13 36 16.0 20.4 VqEA172858
K21A05S KC2021 01 13.12487904 18 44.25 -13 36 33.7 20.6 VuEA172H21
K21A05S KC2021 01 13.12873304 18 48.55 -13 36 35.7 20.5 VuEA172H21
K21A05S KC2021 01 13.13141804 18 57.61 -13 36 20.3 20.5 VqEA172858
K21A05S KC2021 01 13.80377604 33 10.35 -13 42 09.6 19.7 GVEA172595
K21A05S KC2021 01 13.81051 04 33 19.41 -13 42 06.0 19.8 GVEA172104
K21A05S KC2021 01 13.81647 04 33 26.55 -13 42 08.3 19.5 GVEA172104
K21A05S KC2021 01 13.81656304 33 25.73 -13 42 12.7 20.0 GVEA172L01
K21A05S KC2021 01 13.81804704 33 27.57 -13 42 15.1 20.0 GVEA172595
K21A05S KC2021 01 13.81837404 33 27.90 -13 42 13.1 20.2 GVEA172L01
K21A05S KC2021 01 13.82019804 33 30.07 -13 42 14.1 20.1 GVEA172L01
K21A05S KC2021 01 13.82024 04 33 31.04 -13 42 09.8 19.9 GVEA172104
K21A05S KC2021 01 13.82201104 33 32.27 -13 42 14.4 20.3 GVEA172L01
K21A05S KC2021 01 13.82415704 33 34.85 -13 42 15.3 20.2 GVEA172L01
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, 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.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer E. J. Christensen.
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.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, V. Dobos, D. Pujagic.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. 0.36-m
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 AS5 Earth MOID = 0.0186 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 349.00499 (2000.0) P Q
n 0.56062252 Peri. 294.99168 -0.23027679 -0.97311879
a 1.4566516 Node 168.32005 +0.89898164 -0.21411637
e 0.3177879 Incl. 0.99712 +0.37256491 -0.08481740
P 1.76 H 26.2 G 0.15 U 6
Residuals in seconds of arc
210112 F51 0.0 0.0 210113 W34 1.4- 0.1- 210113 595 0.5- 0.2+
210112 F51 0.1- 0.0 210113 858 0.2- 0.3+ 210113 104 0.2+ 0.2-
210112 F51 0.1+ 0.0 210113 I52 0.3+ 0.2+ 210113 104 0.1+ 0.1-
210113 H36 0.1+ 0.3+ 210113 I52 0.1+ 0.0 210113 L01 0.2+ 0.0
210113 H36 1.1+ 0.5- 210113 I52 0.0 0.2+ 210113 595 0.4+ 0.0
210113 W34 0.5- 0.7- 210113 H21 0.1+ 0.6+ 210113 L01 0.1+ 0.2+
210113 807 0.1+ 0.2- 210113 858 0.2+ 0.6- 210113 L01 0.2- 0.1-
210113 W34 0.5- 0.1- 210113 H21 0.1- 0.3+ 210113 104 0.4- 0.2-
210113 807 0.2+ 0.1- 210113 H21 0.2- 0.5+ 210113 L01 0.1+ 0.2+
210113 807 0.3+ 0.0 210113 858 0.3+ 0.1- 210113 L01 0.1+ 0.0
Ephemeris:
2021 AS5 a,e,i = 1.46, 0.32, 1 q = 0.9937
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 12 14 01 09 56.8 -05 47 54 0.08346 1.0175 111.2 64.4 23.1
...
2020 12 29 01 45 21.4 -08 45 43 0.05282 0.9965 103.0 74.1 22.4
...
2021 01 06 02 36 23.8 -11 10 53 0.03669 0.9937 105.5 72.4 21.5
...
2021 01 12 03 56 53.1 -13 17 22 0.02682 0.9957 116.3 62.3 20.5
2021 01 13 04 16 12.1 -13 30 42 0.02561 0.9963 119.3 59.4 20.4
2021 01 14 04 37 23.9 -13 37 57 0.02458 0.9971 122.7 56.1 20.2
...
2021 01 20 07 05 52.7 -10 59 50 0.02362 1.0035 145.3 34.0 19.5
...
2021 01 28 09 21 11.4 -03 50 47 0.03519 1.0170 155.8 23.4 20.1
...
2021 02 12 10 37 18.7 +02 40 31 0.07195 1.0560 162.4 16.4 21.5
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-A172
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