MPEC 2018-A31 : 2018 AT
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 2018-A30
Read MPEC 2018-A32
M.P.E.C. 2018-A31 Issued 2018 Jan. 9, 17:31 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
2018 AT
Observations:
K18A00T* C2018 01 05.10109 01 47 18.22 +51 20 48.2 20.7 GUEA031G96
K18A00T C2018 01 05.10685 01 47 20.16 +51 20 46.5 20.3 GUEA031G96
K18A00T C2018 01 05.11261 01 47 22.06 +51 20 45.5 21.0 GUEA031G96
K18A00T C2018 01 05.11836 01 47 23.95 +51 20 44.3 20.9 GUEA031G96
K18A00T C2018 01 05.23150 01 48 01.45 +51 20 13.7 21.8 GUEA031G96
K18A00T C2018 01 05.23225 01 48 01.76 +51 20 13.1 22.2 GUEA031G96
K18A00T C2018 01 05.23631 01 48 03.18 +51 20 12.5 UEA031G96
K18A00T ^C2018 01 05.24793 01 48 07.06 +51 20 09.3 20.1 RoEA031695
K18A00T ^C2018 01 05.25184 01 48 08.37 +51 20 07.9 20.2 RoEA031695
K18A00T ^C2018 01 05.25575 01 48 09.67 +51 20 06.8 20.0 RoEA031695
K18A00T C2018 01 06.06668701 52 46.11 +51 16 43.1 21.3 GUEA031H01
K18A00T C2018 01 06.07056101 52 47.37 +51 16 42.2 20.8 GUEA031H01
K18A00T C2018 01 06.08235101 52 51.23 +51 16 38.9 21.0 GUEA031H01
K18A00T C2018 01 06.09222901 52 54.48 +51 16 36.1 20.6 GUEA031H01
K18A00T C2018 01 06.11088 01 53 00.74 +51 16 30.7 UEA031I52
K18A00T C2018 01 06.11465 01 53 01.97 +51 16 30.4 20.4 GUEA031I52
K18A00T C2018 01 06.11789 01 53 03.06 +51 16 29.4 21.0 GUEA031I52
K18A00T KC2018 01 07.04198201 58 12.92 +51 11 50.4 21.2 VuEA031H21
K18A00T KC2018 01 07.04796201 58 14.85 +51 11 48.6 21.1 VuEA031H21
K18A00T KC2018 01 07.05134101 58 15.92 +51 11 47.5 21.2 VuEA031H21
K18A00T C2018 01 08.24802 02 04 50.70 +51 04 49.4 21.2 GUEA031G96
K18A00T C2018 01 08.25027 02 04 51.39 +51 04 48.3 21.4 GUEA031G96
K18A00T C2018 01 08.25253 02 04 52.14 +51 04 47.4 21.6 GUEA031G96
K18A00T C2018 01 08.25478 02 04 52.89 +51 04 46.8 21.9 GUEA031G96
Observer details:
695 Kitt Peak. Observer A. F. Tubbiolo. 2.3-m f/9 reflector + CCD.
G96 Mt. Lemmon Survey. Observers G. J. Leonard, E. J. Christensen. Measurers
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman,
F. C. Shelly. 1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.61-m f/4.5
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. C. Fuls. Measurers
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman,
F. C. Shelly. 1.0-m reflector + CCD.
Orbital elements:
2018 AT PHA, Earth MOID = 0.0325 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 338.08755 (2000.0) P Q
n 0.43681212 Peri. 22.14332 +0.95288859 -0.30272829
a 1.7203082 Node 355.35319 +0.23122031 +0.76539060
e 0.4086353 Incl. 13.52379 +0.19631734 +0.56791972
P 2.26 H 20.5 G 0.15 U 9
Residuals in seconds of arc
180105 G96 0.0 0.1- 180105 695 0.1+ 0.1+ 180106 I52 0.7+ 0.1+
180105 G96 0.3+ 0.4- 180105 695 0.0 0.1+ 180107 H21 0.0 0.0
180105 G96 0.2+ 0.0 180106 H01 0.2- 0.1- 180107 H21 0.1- 0.2+
180105 G96 0.1+ 0.1+ 180106 H01 0.3- 0.1+ 180107 H21 0.4- 0.2+
180105 G96 0.9- 0.1+ 180106 H01 0.3- 0.0 180108 G96 0.1+ 0.1-
180105 G96 0.3- 0.3- 180106 H01 0.1- 0.0 180108 G96 0.2- 0.2-
180105 G96 0.3+ 0.3+ 180106 I52 0.4+ 0.7- 180108 G96 0.0 0.1-
180105 695 0.1+ 0.3+ 180106 I52 0.4+ 0.1+ 180108 G96 0.2+ 0.2+
Ephemeris:
2018 AT a,e,i = 1.72, 0.41, 14 q = 1.0173
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 12 10 23 08 07.7 +46 32 17 0.3459 1.1329 106.5 56.4 20.5
...
2017 12 25 00 40 44.5 +51 03 58 0.4195 1.2060 112.1 49.1 20.9
...
2018 01 02 01 29 21.2 +51 28 28 0.4682 1.2488 113.9 46.0 21.1
...
2018 01 08 02 03 30.1 +51 06 20 0.5095 1.2821 114.6 44.2 21.3
2018 01 09 02 08 57.3 +50 59 58 0.5167 1.2877 114.7 43.9 21.3
2018 01 10 02 14 20.1 +50 52 55 0.5241 1.2934 114.7 43.7 21.3
...
2018 01 16 02 45 05.2 +49 58 55 0.5710 1.3277 114.7 42.3 21.5
...
2018 01 24 03 22 05.7 +48 24 42 0.6399 1.3741 113.9 40.9 21.8
...
2018 02 08 04 20 51.1 +44 58 36 0.7889 1.4621 110.4 39.2 22.4
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-A31
Read MPEC 2018-A30
Read MPEC 2018-A32
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)