MPEC 2015-Y47 : 1998 SG2
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 2015-Y46
Read MPEC 2015-Y48
M.P.E.C. 2015-Y47 Issued 2015 Dec. 20, 01:59 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
1998 SG2
Revision to MPEC 1998-S09
Additional Observations:
J98S02G C2015 12 13.12766 08 06 28.86 +16 06 24.8 20.6 uEY047J43
J98S02G C2015 12 13.13616 08 06 28.25 +16 06 25.2 20.1 uEY047J43
J98S02G C2015 12 13.14465 08 06 27.80 +16 06 27.1 19.7 uEY047J43
J98S02G C2015 12 13.15312 08 06 27.29 +16 06 28.4 20.5 uEY047J43
J98S02G C2015 12 18.31250 08 01 13.22 +16 24 52.0 20.7 VoEY047691
J98S02G C2015 12 18.33144 08 01 11.89 +16 24 56.5 21.0 VoEY047691
J98S02G C2015 12 18.35724 08 01 10.06 +16 25 02.8 20.8 VoEY047691
J98S02G HC2015 12 18.46797 08 01 02.20 +16 25 29.5 20.6 RoEY047291
J98S02G HC2015 12 18.47796 08 01 01.48 +16 25 31.7 20.4 RoEY047291
J98S02G HC2015 12 18.48729 08 01 00.84 +16 25 33.8 20.5 RoEY047291
J98S02G HC2015 12 19.21384 08 00 12.04 +16 28 28.9 20.7 VoEY047691
J98S02G HC2015 12 19.21985 08 00 11.65 +16 28 30.5 20.9 VoEY047691
J98S02G HC2015 12 19.22585 08 00 11.22 +16 28 32.5 21.0 VoEY047691
Observer details:
291 LPL/Spacewatch II. Observer R. A. Mastaler. 1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak. Observer R. A. Mastaler. 0.9-m f/3
reflector + CCD.
J43 Oukaimeden Observatory, Marrakech. Observer C. Rinner. 0.5-m f/3
reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
151213 J43 1.05- 0.14+ 151219 691 1.10- 0.14+ MPO 33777 +1.6 day
Orbital elements:
1998 SG2 Earth MOID = 0.2157 AU
Epoch 2016 Jan. 13.0 TT = JDT 2457400.5 MPC
M 46.29082 (2000.0) P Q
n 0.29269172 Peri. 219.58935 +0.97802110 -0.20751684
a 2.2466173 Node 152.36749 +0.20067068 +0.91038408
e 0.4590425 Incl. 2.50676 +0.05662164 +0.35796310
P 3.37 H 19.6 G 0.15 U 1
Residuals in seconds of arc
980817 704 0.8- 0.2- 980919 426 0.1+ 0.0 981014 704 1.6- 0.9-
980817 704 1.1+ 1.1+ 980919 900 0.5+ 0.3+ 981015 704 1.2+ 0.1-
980817 704 0.1- 0.2+ 980919 900 0.5+ 0.4+ 981015 704 0.2+ 0.8-
980817 704 0.7+ 0.8- 980919 046 0.0 0.2+ 981015 704 0.1- 1.6-
980817 704 0.4+ 0.5+ 980920 046 0.0 0.1+ 981015 704 0.3+ 0.8-
980823 704 1.4- 0.5- 980920 046 0.1- 0.1+ 981015 704 0.7+ 1.0-
980823 704 (1.6- 2.0+) 980920 046 0.1- 0.2+ 981016 118 0.5+ 0.2+
980823 704 0.3+ 1.1+ 980920 428 0.7- 0.8- 981016 118 0.5+ 0.2+
980823 704 0.3+ 0.0 980920 428 0.2+ 0.0 981016 704 0.6+ 0.5-
980823 704 (3.4- 0.9-) 980920 428 0.4- 0.5- 981016 704 0.4+ 0.1+
980914 704 0.0 0.4+ 980920 557 0.0 0.4+ 981016 704 0.2+ 0.4+
980914 704 0.1+ 0.3- 980920 557 0.0 0.4+ 981016 704 0.9+ 0.0
980914 704 0.1+ 0.3- 980920 557 0.0 0.3+ 981016 704 0.3+ 0.6+
980917 699 0.2- 0.3+ 980921 540 0.2- 0.4+ 981016 422 0.1+ 0.6-
980917 699 0.2- 0.2+ 980921 540 0.1+ 0.4+ 981016 422 0.1- 0.6-
980917 699 0.1- 0.5+ 980921 540 0.4+ 0.4+ 981016 422 0.1- 0.6-
980918 734 0.2- 1.3- 980923 426 0.3- 0.3+ 981016 422 0.3- 0.7-
980918 734 0.2+ 0.7- 980923 426 0.4- 0.3+ 981016 422 0.0 0.6-
980918 734 0.2+ 0.5- 980923 426 0.2- 0.4+ 981017 699 0.4+ 0.7+
980918 704 0.3- 0.4+ 980924 910 2.0- 0.5+ 981017 699 0.4- 0.4+
980918 704 1.0- 0.5+ 980924 910 (2.0- 0.6+) 981017 699 0.5- 0.6+
980918 704 0.1- 0.3+ 980924 910 1.9- 0.6+ 981020 071 0.7+ 0.3-
980918 704 0.4- 1.7+ 980925 046 0.3- 0.3+ 981020 071 0.8+ 0.0
980918 704 0.0 1.1+ 980925 046 0.2- 0.2+ 981020 071 0.3+ 0.3-
980918 426 0.1+ 0.5- 980925 046 0.1- 0.3+ 981020 071 0.6+ 0.2-
980918 426 0.3+ 0.3- 980925 557 0.2+ 0.2+ 981020 071 0.4+ 0.2-
980918 426 0.0 0.4- 980925 557 0.0 0.1+ 981020 071 0.5+ 0.2-
980918 426 0.0 0.1- 980926 704 0.5+ 0.4- 981020 071 0.6+ 0.2-
980918 426 0.1- 0.5- 980926 704 0.6+ 1.5- 981021 402 0.3- 0.1+
980918 108 (1.6- 3.1-) 980926 704 0.5- 0.8- 981021 402 0.2- 0.1+
980918 108 (2.0+ 0.3-) 980926 704 0.9+ 0.7+ 981021 402 0.2- 0.0
980918 557 0.4- 0.5+ 980926 704 0.7- 0.6+ 981026 118 0.8+ 0.4+
980918 557 0.8- 1.3+ 980927 860 (2.1+ 1.7-) 981026 118 0.4+ 0.3+
980918 611 0.2- 0.2+ 980927 860 (2.7+ 3.0+) 981028 587 0.4- 1.4+
980918 611 0.6- 0.0 980927 704 0.1- 0.1- 981028 587 0.3- 0.3+
980918 468 0.0 0.3- 980927 704 0.6- 0.3- 981028 587 0.3- 0.3+
980918 611 0.1- 0.3- 980927 704 0.2+ 0.4+ 981108 118 0.2- 0.7+
980918 468 0.0 0.2- 980927 704 0.3+ 0.9- 981108 118 0.0 0.8+
980918 468 0.2- 0.2- 980927 704 0.9+ 1.5- 981108 360 0.7- 0.9+
980919 816 0.1- 0.2- 980929 910 1.7- 0.1- 981108 360 0.6- 0.8+
980919 816 0.1- 0.1- 980929 910 1.7- 0.1- 981108 360 0.4- 0.8+
980919 816 0.0 0.3- 980929 910 1.7- 0.0 981119 699 0.9- 1.1-
980919 734 1.3+ 0.1+ 981002 402 0.1+ 0.2- 981119 699 0.5+ 0.6+
980919 734 0.1+ 0.3+ 981002 402 0.3+ 0.3- 981119 699 1.4- 0.7+
980919 734 0.1+ 0.4+ 981002 402 0.4+ 0.0 151213 J43 (1.0+ 1.6+)
980919 670 0.4+ 0.8- 981002 360 0.3+ 0.0 151213 J43 0.6- 0.4+
980919 670 0.5- 0.3+ 981002 360 0.2+ 0.0 151213 J43 0.0 0.7+
980919 422 0.6+ 0.5+ 981002 360 0.4+ 0.3- 151213 J43 0.2- 0.4+
980919 422 0.7+ 0.6+ 981008 900 1.2- 0.2- 151218 691 0.0 0.2+
980919 422 0.6+ 0.7+ 981008 900 0.9- 0.5+ 151218 691 0.1+ 0.1+
980919 422 0.6+ 0.5+ 981013 422 0.3- 0.4- 151218 691 0.0 0.1+
980919 428 0.2- 0.4- 981013 422 0.8+ 0.6- 151218 291 0.2+ 0.4+
980919 428 1.4+ 0.0 981013 428 0.6- 0.5- 151218 291 0.0 0.2+
980919 402 0.3+ 0.4+ 981013 428 0.4- 0.6- 151218 291 0.3+ 0.2+
980919 402 0.3+ 0.3+ 981013 428 0.9+ 0.3- 151219 691 0.3- 0.1-
980919 402 0.3+ 0.5+ 981013 557 0.4+ 0.7- 151219 691 0.2+ 0.1-
980919 402 0.4+ 0.3+ 981013 557 0.4+ 0.5- 151219 691 0.1+ 0.3+
980919 426 0.0 0.1- 981014 704 0.5+ 0.6-
980919 426 0.3+ 0.0 981014 704 0.9+ 0.1-
Ephemeris:
1998 SG2 a,e,i = 2.25, 0.46, 3 q = 1.2153
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2015 11 20 08 14 01.2 +15 47 16 0.9048 1.5961 114.9 34.2 21.8
...
2015 12 05 08 12 15.9 +15 47 17 0.8682 1.6836 130.4 26.5 21.6
...
2015 12 13 08 06 35.7 +16 06 02 0.8574 1.7308 139.9 21.5 21.5
...
2015 12 19 08 00 26.3 +16 27 41 0.8557 1.7664 147.5 17.4 21.4
2015 12 20 07 59 16.6 +16 31 49 0.8561 1.7723 148.8 16.7 21.4
2015 12 21 07 58 04.9 +16 36 06 0.8566 1.7783 150.1 16.0 21.4
...
2015 12 27 07 50 18.0 +17 04 06 0.8642 1.8138 158.0 11.7 21.3
...
2016 01 04 07 38 53.3 +17 45 24 0.8869 1.8611 168.7 5.9 21.2
...
2016 01 19 07 18 09.9 +19 01 51 0.9728 1.9490 169.9 5.1 21.4
A. U. Tomatic (C) Copyright 2015 MPC M.P.E.C. 2015-Y47
Read MPEC 2015-Y46
Read MPEC 2015-Y48
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)