MPEC 2020-X61 : 2012 XA
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2020-X60
Read MPEC 2020-X62
M.P.E.C. 2020-X61 Issued 2020 December 8, 06:37 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
2012 XA
Revision to MPEC 2012-X6
Additional Observations:
K12X00A C2020 11 13.19082601 07 43.04 +29 57 01.8 21.41GVEX061G96
K12X00A C2020 11 13.19605001 07 42.96 +29 56 51.8 21.55GVEX061G96
K12X00A C2020 11 13.20127801 07 42.80 +29 56 42.0 22.36GVEX061G96
K12X00A C2020 11 13.20657801 07 42.68 +29 56 31.2 21.45GVEX061G96
K12X00A C2020 12 06.33440001 46 41.655+05 57 19.76 20.05wUEX061F51
K12X00A C2020 12 06.34448001 46 43.410+05 56 17.85 20.99wUEX061F51
K12X00A C2020 12 06.35435001 46 45.148+05 55 17.22 21.63wUEX061F51
K12X00A C2020 12 06.36434701 46 46.925+05 54 15.99 20.99wUEX061F51
K12X00A KC2020 12 07.07889101 49 42.26 +04 39 53.5 19.98GVEX061I52
K12X00A KC2020 12 07.08057201 49 42.59 +04 39 43.0 20.11GVEX061I52
K12X00A KC2020 12 07.08225401 49 42.95 +04 39 33.0 20.18GVEX061I52
K12X00A KC2020 12 07.08393601 49 43.24 +04 39 22.0 20.60GVEX061I52
K12X00A |C2020 12 08.09173 01 53 46.07 +02 54 04.2 20.4 VuEX061807
K12X00A |C2020 12 08.09939 01 53 47.63 +02 53 13.9 20.2 VuEX061807
K12X00A |C2020 12 08.10685 01 53 49.14 +02 52 25.0 20.2 VuEX061807
K12X00A KC2020 12 08.10919 01 53 55.39 +02 49 39.2 20.8 RoEX061691
K12X00A KC2020 12 08.11344 01 53 56.30 +02 49 11.7 19.6 RoEX061691
K12X00A KC2020 12 08.11656401 53 56.81 +02 48 49.6 19.42GVEX061I52
K12X00A KC2020 12 08.11770 01 53 57.19 +02 48 43.5 20.0 RoEX061691
K12X00A KC2020 12 08.11782301 53 57.07 +02 48 41.5 19.97GVEX061I52
K12X00A KC2020 12 08.11909201 53 57.33 +02 48 32.7 20.28GVEX061I52
K12X00A KC2020 12 08.12035101 53 57.50 +02 48 28.5 VEX061I52
K12X00A KC2020 12 08.13614401 54 00.16 +02 46 35.6 20.7 VqEX061858
K12X00A KC2020 12 08.14660401 54 02.26 +02 45 27.3 20.4 VqEX061858
K12X00A KC2020 12 08.15358801 54 03.70 +02 44 41.6 20.1 VqEX061858
Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch. Observer M. T. Read. 0.9-m
f/3 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.
G96 Mt. Lemmon Survey. Observer D. Rankin. 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. Observer D. C. Fuls. 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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
201113 G96 9- 4- 201208 858 19- 0- MPO252136 -1.16 days
Orbital elements:
2012 XA Earth MOID = 0.0373 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 351.50160 (2000.0) P Q
n 0.61485894 Peri. 209.29161 -0.14318429 -0.98487341
a 1.3696798 Node 249.08534 +0.92714747 -0.09898480
e 0.2659410 Incl. 5.99646 +0.34625976 -0.14221948
P 1.60 H 24.84 G 0.15 U 0
Residuals in seconds of arc
121202 G96 0.2- 0.1+ 121203 H36 1.4- 0.6+ 121214 807 0.2+ 0.1+
121202 G96 0.1+ 0.1+ 121203 118 0.9+ 1.0- 121216 807 0.1+ 0.0+
121202 G96 0.0- 0.0+ 121203 118 0.2+ 0.1+ 121216 807 0.1+ 0.0+
121202 G96 0.1- 0.1- 121203 118 1.2+ 0.9- 121216 807 0.0- 0.0-
121202 G96 0.2- 0.6+ 121203 J95 0.4+ 0.2+ 121216 807 0.1+ 0.0-
121202 G96 0.0- 0.2+ 121203 J95 0.4- 0.3- 121216 807 0.1+ 0.1-
121202 G96 0.0+ 0.4+ 121205 703 1.0- 0.1+ 121221 807 0.1+ 0.0+
121202 H36 0.6- 0.0+ 121205 703 1.1- 0.2+ 121221 807 0.2+ 0.1+
121202 H36 0.3+ 0.4- 121205 703 0.5- 0.5- 121221 807 0.0- 0.0-
121202 H36 1.4+ 0.1+ 121207 807 0.0- 0.2+ 121221 807 0.1- 0.1-
121202 A24 (1.9+ 0.5-) 121207 807 0.1+ 0.0+ 121223 807 0.1+ 0.2-
121202 A24 0.0+ 0.2+ 121207 807 0.1- 0.3+ 121223 807 0.1+ 0.0-
121202 A24 0.4+ 0.0- 121207 807 0.2- 0.1+ 121223 807 0.1+ 0.1-
121202 204 0.6+ 0.2- 121208 033 (3.7- 5.0+) 121223 807 0.1+ 0.1-
121202 204 1.2+ 0.4- 121208 033 (3.5- 4.1+) 121223 807 0.1+ 0.0+
121202 204 0.1- 0.3+ 121209 474 0.7- 0.1- 201113 G96 0.6- 0.0-
121203 H06 0.2- 0.3+ 121209 474 0.3+ 0.1+ 201113 G96 0.2+ 0.1+
121203 H06 0.2- 0.4+ 121209 474 0.0- 0.6+ 201113 G96 0.1- 0.5+
121203 H06 0.3- 0.5+ 121209 474 0.3- 0.4+ 201113 G96 0.1+ 0.0+
121203 G48 1.4+ 1.1- 121210 807 0.3- 0.1+ 201206 F51 0.0- 0.0-
121203 G48 1.3+ 0.0- 121210 807 0.4- 0.2+ 201206 F51 0.1- 0.1-
121203 I19 1.3+ 0.0+ 121210 807 0.3- 0.3+ 201206 F51 0.0- 0.1-
121203 G48 0.2- 0.4+ 121210 807 0.4- 0.2+ 201206 F51 0.1+ 0.1+
121203 I19 0.4- 0.6+ 121210 807 0.1- 0.1+ 201207 I52 0.0+ 0.1-
121203 I19 0.1- 0.5- 121210 474 0.7- 0.6+ 201207 I52 0.1- 0.1-
121203 G96 0.2- 0.4+ 121210 474 0.1+ 0.0+ 201207 I52 0.4+ 0.4+
121203 G96 0.2- 0.3+ 121210 474 0.1+ 0.2+ 201207 I52 0.2- 0.1-
121203 G96 0.2- 0.5+ 121210 474 0.2+ 0.4- 201208 807 0.4+ 0.2-
121203 G96 0.0- 0.4+ 121211 807 0.1- 0.1- 201208 807 0.6+ 0.3-
121203 G96 0.3- 0.4+ 121211 807 0.2- 0.1+ 201208 807 0.5+ 0.3-
121203 G96 0.2- 0.5+ 121211 807 0.1- 0.1- 201208 691 0.4- 0.2-
121203 G96 0.0- 0.3+ 121212 807 0.1- 0.1+ 201208 691 0.1+ 0.1+
121203 G96 0.1+ 0.2+ 121212 807 0.1- 0.1+ 201208 I52 0.3- 0.3-
121203 807 0.1+ 0.1- 121212 807 0.1- 0.1+ 201208 691 0.3+ 0.3-
121203 807 0.1+ 0.1+ 121212 807 0.1- 0.1+ 201208 I52 0.2- 0.0-
121203 807 0.0+ 0.2+ 121212 807 0.0- 0.0- 201208 I52 0.3- 0.6-
121203 807 0.0+ 0.1+ 121214 807 0.1- 0.0- 201208 I52 (1.6- 3.5+)
121203 807 0.1+ 0.2+ 121214 807 0.0- 0.1+ 201208 858 0.2+ 0.4-
121203 H36 (3.0+ 0.8-) 121214 807 0.0- 0.2+ 201208 858 0.5- 0.2-
121203 H36 (1.8+ 0.8-) 121214 807 0.0+ 0.3+ 201208 858 0.3- 0.1-
Ephemeris:
2012 XA a,e,i = 1.37, 0.27, 6 q = 1.0054
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 08 01 08 17.6 +32 21 47 0.1252 1.1024 151.5 25.4 21.7
...
2020 11 23 01 14 02.4 +22 55 56 0.08686 1.0578 142.6 34.5 21.1
...
2020 12 01 01 29 34.2 +14 02 27 0.07079 1.0387 136.8 40.6 20.8
...
2020 12 07 01 49 18.7 +04 49 22 0.06123 1.0270 131.8 45.7 20.6
2020 12 08 01 53 24.2 +03 02 49 0.05990 1.0252 130.9 46.6 20.5
2020 12 09 01 57 44.7 +01 12 13 0.05866 1.0236 130.0 47.5 20.5
...
2020 12 15 02 29 33.6 -11 02 37 0.05329 1.0151 124.0 53.5 20.5
...
2020 12 23 03 28 50.2 -28 02 35 0.05244 1.0078 116.1 61.2 20.6
...
2021 01 07 05 49 57.5 -46 07 50 0.06778 1.0074 109.0 67.4 21.4
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-X61
Read MPEC 2020-X60
Read MPEC 2020-X62
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)