MPEC 2017-B145: 1998 QK28
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M.P.E.C. 2017-B145 Issued 2017 Jan. 31, 11:34 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 QK28
Revision to MPEC 1998-Q30
Additional Observations:
J98Q28K C2017 01 29.49525 09 34 07.539+05 09 49.50 21.5 wLEB145F51
J98Q28K C2017 01 29.50726 09 34 06.518+05 09 57.12 21.6 wLEB145F51
J98Q28K C2017 01 29.51927 09 34 05.477+05 10 04.61 21.6 wLEB145F51
J98Q28K C2017 01 29.53125 09 34 04.451+05 10 12.08 21.6 wLEB145F51
J98Q28K |C2017 01 30.17090 09 33 11.53 +05 17 00.6 21.8 VuEB145807
J98Q28K |C2017 01 30.17682 09 33 11.02 +05 17 04.2 21.8 VuEB145807
J98Q28K |C2017 01 30.18293 09 33 10.51 +05 17 08.0 21.8 VuEB145807
J98Q28K _C2017 01 30.43209909 32 49.734+05 19 38.89 21.2 GUEB145568
J98Q28K _C2017 01 30.43308109 32 49.646+05 19 39.56 21.3 GUEB145568
J98Q28K _C2017 01 30.43406409 32 49.563+05 19 40.15 21.4 GUEB145568
J98Q28K KC2017 01 30.90998109 32 10.00 +05 24 47.7 21.5 GUEB145K92
J98Q28K KC2017 01 30.91883209 32 09.24 +05 24 53.3 21.0 GUEB145K92
J98Q28K KC2017 01 30.92546709 32 08.67 +05 24 57.6 21.2 GUEB145K92
Observer details:
568 Mauna Kea. Observers R. J. Wainscoat, D. Woodworth. Measurers M. Micheli,
R. J. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo. Observers T. Linder, R. Holmes. 0.61-m f/6.5 astrograph
+ CCD.
F51 Pan-STARRS 1, Haleakala. Observers B. Gibson, T. Goggia, S. Kahale,
T. Lowe, A. Schultz, M. Willman. Measurers K. Chambers, S. Chastel,
L. Denneau, H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat,
C. Waters, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
K92 Sutherland-LCOGT B. Observers T. Lister, S. Greenstreet, E. Gomez.
Measurer T. Lister. 1.0-m f/8 Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170129 F51 7.33- 1.10+ 170130 K92 7.37- 1.13+ MPO 87340 +18 day
Orbital elements:
1998 QK28 PHA, Earth MOID = 0.0060 AU
Epoch 2017 Feb. 16.0 TT = JDT 2457800.5 MPC
M 53.00863 (2000.0) P Q
n 0.27620532 Peri. 204.57115 +0.94364414 -0.33071813
a 2.3351495 Node 174.69287 +0.32180888 +0.90791004
e 0.5808780 Incl. 7.89127 +0.07729678 +0.25753618
P 3.57 H 19.2 G 0.15 U 1
Residuals in seconds of arc
980825 704 1.4+ 1.2- 980828 557 1.1+ 0.5- 980901 360 0.2+ 0.5+
980825 704 (1.4- 2.5+) 980828 557 0.9+ 0.6- 980901 360 0.6- 0.2-
980825 704 1.1- 1.4- 980828 557 1.0+ 0.5- 980901 360 1.4- 0.2-
980825 704 1.0- 1.7- 980828 713 0.5+ 0.6- 980902 860 1.1+ 1.1+
980825 704 1.2- 0.9- 980828 713 1.2+ 0.4- 980902 860 (2.5+ 0.3+)
980825 106 0.2- 0.2+ 980828 713 1.0+ 0.5- 980902 860 (2.7+ 0.3-)
980825 106 0.2- 0.1+ 980828 713 1.2+ 0.5- 980902 402 1.6+ 0.2+
980826 106 0.1+ 0.2+ 980828 704 0.0 0.0 980902 402 0.1- 0.1+
980826 106 0.3- 0.2+ 980828 704 0.7- 0.2+ 980902 402 0.3+ 0.1+
980826 106 0.1+ 0.2+ 980828 704 0.6- 0.5- 980902 402 0.2+ 0.0
980826 106 0.0 0.3+ 980828 704 1.1- 0.2- 980902 360 0.1- 0.2+
980826 711 0.2+ 0.4+ 980828 704 0.4+ 0.4- 980902 360 0.1- 0.2+
980826 711 0.0 0.3+ 980828 658 0.4- 0.5- 980902 360 0.1- 0.2+
980826 711 0.6- 0.2+ 980828 658 0.3- 0.3- 980904 402 0.2+ 0.2+
980826 596 0.0 0.5- 980828 658 0.5- 0.5- 980904 402 0.2+ 0.2+
980826 596 0.4+ 0.4+ 980828 426 0.5+ 0.1- 980904 402 0.4+ 0.2-
980826 596 0.1+ 0.5- 980828 426 0.3- 0.5- 980904 118 0.1- 0.2+
980826 587 0.6+ 0.1+ 980828 426 0.2+ 0.2- 980904 118 0.3+ 0.0
980826 587 0.6+ 0.4+ 980828 426 0.6- 0.7- 980904 118 0.3+ 0.1+
980826 587 0.2+ 0.9+ 980828 143 1.5- 0.9- 980906 587 0.8+ 0.3+
980826 620 1.4+ 0.0 980828 143 0.8- 0.8- 980906 587 0.4+ 0.6-
980826 620 0.5+ 0.3- 980828 143 1.8- 0.8- 980906 587 0.4- 0.4-
980826 620 0.7+ 0.3+ 980829 670 0.1- 0.7+ 980907 557 0.1+ 0.4-
980826 620 0.7+ 0.2+ 980829 670 0.3+ 0.8+ 980907 557 0.1- 0.3+
980827 106 0.0 0.1+ 980829 670 0.6- 0.6+ 980907 557 0.3+ 0.2+
980827 106 0.2+ 0.0 980829 658 1.2- 1.1+ 980914 557 0.6- 0.1+
980827 106 0.2- 0.1- 980829 658 1.4- 0.9+ 980914 557 0.5- 0.2-
980827 758 (3.2+ 0.4+) 980829 658 1.3- 1.0+ 980914 557 0.5- 0.1+
980827 758 (2.0- 1.0-) 980829 151 (2.2- 0.0 ) 980914 557 0.0 0.5-
980827 758 0.3+ 0.3- 980829 151 0.8+ 1.0+ 980922 658 0.2- 1.0-
980827 713 0.2+ 0.1+ 980830 658 0.1- 0.2- 980922 658 0.7- 0.7-
980827 713 0.2- 0.7- 980830 658 0.7- 0.3- 980922 658 0.7- 0.7-
980827 713 1.0+ 0.2+ 980830 658 0.1- 0.2- 980923 557 0.5+ 0.2+
980827 713 0.4+ 0.4- 980830 587 0.7- 0.5- 980923 557 0.4- 1.3+
980827 713 0.6+ 0.0 980830 587 0.5- 0.8+ 980923 557 0.5+ 0.2+
980827 713 0.4+ 0.3- 980830 587 0.4- 0.5+ 170129 F51 0.1- 0.3-
980827 704 1.0- 0.5- 980831 620 0.0 0.4+ 170129 F51 0.1+ 0.2-
980827 704 0.3- 0.1- 980831 620 0.4+ 1.2+ 170129 F51 0.0 0.2-
980827 704 0.5+ 0.1+ 980831 620 0.6- 0.4+ 170129 F51 0.0 0.2-
980827 704 0.2- 0.7+ 980831 620 0.0 0.6+ 170130 807 0.2- 0.1+
980827 704 1.6- 0.6+ 980831 046 0.3- 0.1- 170130 807 0.2- 0.0
980827 658 0.6- 0.2+ 980831 046 0.1- 0.0 170130 807 0.0 0.1-
980827 658 0.1- 0.0 980831 046 0.4- 0.1- 170130 568 0.0 0.1-
980827 658 0.6- 0.0 980901 670 1.4+ 0.5+ 170130 568 0.0 0.1-
980827 658 0.1- 0.1+ 980901 670 0.5+ 0.6+ 170130 568 0.0 0.1-
980827 557 1.3+ 0.5- 980901 670 1.1+ 0.4+ 170130 K92 0.0 0.2-
980827 557 0.9+ 0.4- 980901 670 0.6- 0.4+ 170130 K92 0.0 0.2-
980827 468 (2.3+ 0.3-) 980901 670 0.3- 0.4- 170130 K92 0.0 0.1-
980827 468 1.2+ 0.9- 980901 670 0.2- 1.2+
980828 557 1.1+ 0.6- 980901 360 2.0- 0.3-
Ephemeris:
1998 QK28 a,e,i = 2.34, 0.58, 8 q = 0.9787
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 01 01 10 06 10.7 +01 35 11 1.1550 1.9147 126.9 24.2 22.1
...
2017 01 16 09 51 51.7 +03 03 27 1.1373 2.0267 145.6 15.9 21.9
...
2017 01 24 09 41 39.5 +04 14 26 1.1466 2.0848 156.0 11.1 21.8
...
2017 01 30 09 33 25.7 +05 15 08 1.1643 2.1277 163.6 7.5 21.7
2017 01 31 09 32 02.4 +05 25 40 1.1683 2.1348 164.8 6.9 21.7
2017 02 01 09 30 39.1 +05 36 17 1.1725 2.1418 166.0 6.4 21.7
...
2017 02 07 09 22 26.5 +06 41 00 1.2038 2.1838 171.3 3.9 21.7
...
2017 02 15 09 12 15.4 +08 06 39 1.2618 2.2388 168.7 4.9 21.9
...
2017 03 02 08 57 33.0 +10 29 21 1.4182 2.3388 151.8 11.6 22.5
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-B145
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