MPEC 2019-F23 : 2017 KN4
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M.P.E.C. 2019-F23 Issued 2019 Mar. 18, 10:41 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
2017 KN4
Revision to MPEC 2017-K37
Additional Observations:
K17K04N C2015 12 14.37938006 25 39.780+20 45 06.22 22.6 GVEF023F51
K17K04N C2015 12 14.38068706 25 39.623+20 45 06.78 VEF023F51
K17K04N C2015 12 14.39144006 25 38.428+20 45 11.20 23.7 GVEF023F51
K17K04N C2015 12 14.40350006 25 37.068+20 45 16.51 23.2 GVEF023F51
K17K04N C2015 12 14.41687306 25 35.551+20 45 22.52 21.4 GVEF023F51
K17K04N C2016 01 14.41736905 36 01.414+23 40 13.73 23.3 GVEF023F51
K17K04N C2017 03 07.57073615 05 40.694-03 10 49.51 24.1 GVEF023F51
K17K04N C2017 03 07.58397415 05 41.261-03 10 45.89 24.4 GVEF023F51
K17K04N C2017 03 07.59719515 05 41.710-03 10 42.89 22.7 GVEF023F51
K17K04N C2017 04 07.52853015 11 28.875+00 28 43.54 21.9 GVEF023F51
K17K04N C2017 04 07.53991615 11 28.503+00 28 49.86 22.9 GVEF023F51
K17K04N C2017 04 07.55131015 11 28.139+00 28 56.43 21.3 GVEF023F51
K17K04N C2017 04 07.56270915 11 27.787+00 29 02.91 22.3 GVEF023F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe,
E. Magnier, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber,
Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
151214 F51 31.4+ 4.8+ 170407 F51 0.4- 0.1+ MPO428357 +0.016 day
Orbital elements:
2017 KN4 Earth MOID = 0.0603 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 264.16300 (2000.0) P Q
n 0.44100547 Peri. 225.41761 +0.78344438 +0.60385021
a 1.7093857 Node 96.88282 -0.52000070 +0.76640237
e 0.4030068 Incl. 8.50914 -0.34031482 +0.21907152
P 2.23 H 20.7 G 0.15 U 1
Residuals in seconds of arc
151214 F51 0.0 0.2+ 170520 I52 0.1- 0.3+ 170530 705 0.1- 0.2-
151214 F51 0.2- 0.2+ 170520 I52 1.5+ 0.1+ 170602 807 0.5- 0.1-
151214 F51 0.1+ 0.1- 170520 I52 (3.2+ 0.2+) 170602 807 0.2- 0.0
151214 F51 0.1+ 0.1- 170521 926 0.3- 0.2+ 170602 807 0.0 0.2-
151214 F51 0.0 0.1+ 170521 I52 0.2- 0.2- 170602 807 0.2- 0.5-
160114 F51 0.0 0.3+ 170521 I52 0.4+ 0.5+ 170602 807 0.2+ 0.2-
170307 F51 0.2- 0.0 170521 926 0.8+ 0.4- 170602 807 0.3+ 0.0
170307 F51 0.5+ 0.3+ 170521 I52 0.2+ 0.1+ 170602 291 0.3- 0.3+
170307 F51 0.6- 0.0 170521 I52 0.0 0.5+ 170602 291 0.2- 0.3+
170407 F51 0.0 0.2+ 170521 926 0.4+ 0.4+ 170602 291 0.1- 0.4+
170407 F51 0.2- 0.1- 170522 I52 0.4- 0.1- 170615 691 0.1- 0.5-
170407 F51 0.3- 0.1- 170522 I52 0.3+ 0.0 170615 691 0.2- 0.1+
170407 F51 0.1- 0.2- 170522 I52 0.2+ 1.1- 170619 I52 0.1+ 0.4-
170518 F51 0.3- 0.1- 170522 291 0.2- 0.1+ 170619 I52 0.3- 0.3-
170518 F51 0.1- 0.0 170522 291 0.2+ 0.1+ 170619 I52 0.1- 0.3-
170518 F51 0.2- 0.2+ 170522 291 0.1+ 0.1- 170714 807 0.2- 0.1+
170519 H21 0.0 0.3+ 170523 I52 0.1- 0.5- 170714 807 0.1- 0.1+
170519 H21 0.2+ 0.3+ 170523 I52 0.5- 0.6+ 170714 807 0.7- 0.4+
170519 H21 0.1+ 0.1+ 170523 I52 0.8+ 0.1- 170820 807 0.4+ 0.3+
170519 691 0.2+ 0.3- 170523 I52 0.1- 0.2- 170820 807 0.3+ 0.8+
170519 568 0.1- 0.1- 170524 I52 0.3- 0.1+ 170820 807 0.7+ 0.5+
170519 568 0.1- 0.1- 170524 I52 0.1+ 0.5- 170821 807 0.2- 0.1+
170519 568 0.2- 0.1- 170524 I52 0.1- 0.2- 171020 807 0.1- 0.0
170519 691 0.1+ 0.3+ 170524 I52 0.2- 0.1- 171020 807 0.1+ 0.2-
170519 691 0.1+ 0.4+ 170528 807 0.1- 0.3- 171020 807 0.0 0.3-
170519 926 0.6+ 0.3+ 170528 807 0.0 0.0 171024 807 0.2- 0.0
170519 926 0.1+ 0.5- 170528 807 0.3- 0.1+ 171024 807 0.1- 0.2+
170519 926 0.0 0.2+ 170528 I52 0.3+ 0.1+ 171024 807 0.1- 0.1+
170520 926 0.1+ 0.1+ 170528 I52 0.6+ 0.2+ 171119 807 0.3+ 0.1+
170520 926 0.2- 0.4- 170528 I52 0.4+ 0.1+ 171119 807 0.1+ 0.3+
170520 691 0.4+ 0.1+ 170528 I52 0.1+ 0.0 171119 807 0.2+ 0.4+
170520 691 0.4+ 0.1+ 170530 705 0.0 0.0
170520 926 0.0 0.3- 170530 705 0.3- 0.1-
Ephemeris:
2017 KN4 a,e,i = 1.71, 0.40, 9 q = 1.0205
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 02 16 12 33 19.5 +10 41 36 1.3877 2.2461 141.4 15.9 24.0
...
2019 03 03 12 21 43.5 +13 28 44 1.2580 2.2058 157.3 10.0 23.6
...
2019 03 11 12 12 28.8 +15 04 21 1.2117 2.1823 163.5 7.4 23.3
...
2019 03 17 12 04 32.2 +16 13 12 1.1885 2.1638 164.6 7.0 23.3
2019 03 18 12 03 09.3 +16 24 09 1.1856 2.1607 164.4 7.1 23.3
2019 03 19 12 01 45.6 +16 34 55 1.1829 2.1575 164.1 7.3 23.3
...
2019 03 25 11 53 13.7 +17 34 48 1.1729 2.1380 160.2 9.1 23.3
...
2019 04 02 11 41 56.1 +18 38 47 1.1742 2.1107 152.3 12.7 23.4
...
2019 04 17 11 23 58.4 +19 38 11 1.2162 2.0560 135.5 20.0 23.7
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-F23
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