MPEC 2020-A126 : 2015 AC246
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M.P.E.C. 2020-A126 Issued 2020 January 14, 14:44 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
2015 AC246
Revision to MPEC 2015-B57
Additional Observations:
K15AO6C C2019 12 08.58253407 49 54.288+32 23 40.85 23.5 GVEA126F52
K15AO6C C2019 12 08.59447207 49 54.223+32 23 32.28 23.7 GVEA126F52
K15AO6C C2019 12 08.60633007 49 54.262+32 23 24.79 22.1 GVEA126F52
K15AO6C C2019 12 08.61826507 49 54.291+32 23 16.93 23.0 GVEA126F52
K15AO6C C2020 01 14.22791 07 08 02.17 +19 16 10.7 21.9 GVEA126G96
K15AO6C C2020 01 14.23374 07 08 01.38 +19 15 57.9 22.1 GVEA126G96
K15AO6C C2020 01 14.23959 07 08 00.61 +19 15 45.6 22.0 GVEA126G96
K15AO6C C2020 01 14.24542 07 07 59.81 +19 15 34.3 22.1 GVEA126G96
K15AO6C ^C2020 01 14.31331 07 07 50.76 +19 13 12.8 21.1 RoEA126695
K15AO6C ^C2020 01 14.31888 07 07 50.01 +19 13 01.1 21.1 RoEA126695
K15AO6C ^C2020 01 14.33003 07 07 48.53 +19 12 37.8 21.4 RoEA126695
Observer details:
695 Kitt Peak. Observer R. A. Mastaler. 2.3-m f/9 reflector + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
191208 F52 0.34- 0.15- 200114 695 0.64- 0.21- MPO331379 -0.19 days
Orbital elements:
2015 AC246 Earth MOID = 0.1932 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 36.23888 (2000.0) P Q
n 0.58739345 Peri. 248.82195 -0.98510237 -0.05282900
a 1.4120497 Node 287.85591 +0.12084723 -0.88971896
e 0.2089232 Incl. 9.90036 -0.12234895 -0.45344158
P 1.68 H 23.4 G 0.15 U 2
Residuals in seconds of arc
150115 F51 0.1+ 0.3+ 150121 F51 0.0 0.1+ 150224 474 0.4+ 0.8+
150115 F51 0.1- 0.1- 150121 F51 0.0 0.2+ 150224 474 0.6+ 0.1+
150115 F51 0.1- 0.0 150121 F51 0.0 0.2- 191208 F52 0.3+ 0.7+
150116 W86 0.0 0.1- 150207 291 0.1+ 1.1- 191208 F52 0.4- 0.4-
150116 W86 0.2- 0.1- 150207 291 0.2+ 0.8- 191208 F52 0.2+ 0.3-
150116 W86 0.0 0.2- 150207 291 0.0 0.2- 191208 F52 0.6+ 0.5-
150116 H21 0.0 0.2+ 150215 807 0.4+ 0.1- 200114 G96 0.1+ 0.3+
150116 H21 0.3+ 0.3+ 150215 807 0.2- 0.0 200114 G96 0.1- 0.5-
150116 H21 0.5+ 0.3+ 150215 807 0.2+ 0.1+ 200114 G96 0.0 0.7-
150116 568 0.1+ 0.3+ 150215 474 0.2+ 0.1- 200114 G96 0.3- 0.1+
150116 568 0.0 0.3+ 150215 474 1.1+ 0.3+ 200114 695 0.1- 0.1+
150116 568 0.1+ 0.2+ 150224 807 1.1- 0.2- 200114 695 0.1- 0.1+
150119 291 0.1+ 0.1+ 150224 807 0.0 0.0 200114 695 0.1+ 0.3+
150119 291 0.1+ 0.1+ 150224 807 0.6- 0.3+
150119 291 0.1- 0.7- 150224 474 0.8- 0.2-
Ephemeris:
2015 AC246 a,e,i = 1.41, 0.21, 10 q = 1.1170
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 12 15 07 49 21.2 +31 08 55 0.3905 1.3303 147.5 23.4 23.1
...
2019 12 30 07 35 48.6 +26 42 34 0.3088 1.2846 165.5 11.1 22.1
...
2020 01 07 07 22 16.9 +23 10 47 0.2780 1.2610 176.8 2.5 21.4
...
2020 01 13 07 10 30.2 +19 58 40 0.2614 1.2438 174.1 4.7 21.4
2020 01 14 07 08 29.1 +19 24 16 0.2592 1.2410 172.5 5.9 21.4
2020 01 15 07 06 27.9 +18 49 17 0.2572 1.2382 170.9 7.2 21.4
...
2020 01 21 06 54 35.5 +15 10 10 0.2480 1.2218 161.6 14.8 21.6
...
2020 01 29 06 40 55.2 +10 10 08 0.2437 1.2011 149.5 24.6 21.9
...
2020 02 13 06 27 38.8 +01 47 06 0.2535 1.1670 130.2 40.2 22.3
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-A126
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