MPEC 2020-K92 : Comet P/2020 F1 = P/2002 E4 (Leonard)
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M.P.E.C. 2020-K92 Issued 2020 May 21, 01:18 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
Comet P/2020 F1 = P/2002 E4 (Leonard)
S. Nakano identified P/2020 F1 with observations taken on a single night
in 2002 by Spacewatch (691) of an apparently asteroidal object (cf. CBET 4737).
It was also located by S. Deen on images taken in 2002 by SDSS (645), and by
R. Matson and K. Sarneczky on images taken in 2002 by the NEAT survey (644).
Observations:
PK20F010 C2002 03 05.25084711 37 12.63 +06 46 29.0 20.5 r 645
PK20F010 C2002 03 05.25167611 37 12.61 +06 46 29.2 20.3 i 645
PK20F010 C2002 03 05.25333511 37 12.55 +06 46 29.7 19.7 z 645
PK20F010 C2002 03 05.25416411 37 12.52 +06 46 29.8 21.2 g 645
PK20F010 fC2002 03 09.39808 11 35 15.08 +07 03 23.7 22.0 Vd 691
PK20F010 C2002 03 09.41985 11 35 14.48 +07 03 29.6 21.5 Vd 691
PK20F010 C2002 03 09.44130 11 35 13.83 +07 03 34.7 21.3 Vd 691
PK20F010 CC2002 03 11.34524 11 34 19.31 +07 11 14.7 20.3 Go 644
PK20F010 CC2002 03 11.35578 11 34 19.01 +07 11 17.4 20.4 Go 644
PK20F010 CC2002 03 11.36755 11 34 18.64 +07 11 20.8 20.4 Go 644
PK20F010 C2002 03 12.26343 11 33 53.01 +07 14 55.6 19.7 RV 644
PK20F010 C2002 03 12.33241 11 33 50.94 +07 15 12.6 19.8 RV 644
PK20F010 C2002 03 12.40324 11 33 48.83 +07 15 29.3 19.8 RV 644
Observer details:
644 Palomar Mountain/NEAT. Observers E. F. Helin, S. Pravdo, K. Lawrence, M.
Hicks, R. Thicksten, E. Hovland, T. Bickler, J. Schroeder, L. Scherr, A.
Deetz, K. Kuluhiwa. Measurers K. Sarneczky, R. Matson. 1.2-m Oschin
Schmidt + CCD, 1.2-m Schmidt + CCD.
645 Apache Point-Sloan Digital Sky Survey. Measurer S. Deen. 2.5-m reflector +
CCD.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer A. F. Tubbiolo.
0.9-m Spacewatch telescope + CCD.
Orbital elements:
P/2020 F1 = P/2002 E4
Epoch 2002 Feb. 15.0 TT = JDT 2452320.5
T 2001 Sept. 11.58377 TT Rudenko
q 3.9990921 (2000.0) P Q
n 0.05468081 Peri. 8.58670 -0.82087431 -0.56740461
a 6.8745787 Node 136.63184 +0.51820529 -0.78780026
e 0.4182782 Incl. 5.42671 +0.24005966 -0.23963045
P 18.0
From 115 observations 2002 Mar. 5-2020 Apr. 21, mean residual 0".4.
P/2020 F1 = P/2002 E4
Epoch 2019 Aug. 25.0 TT = JDT 2458720.5
T 2019 Aug. 29.32101 TT Rudenko
q 3.9831654 (2000.0) P Q
n 0.05518607 Peri. 8.70297 -0.82225829 -0.56538835
a 6.8325537 Node 136.65557 +0.51628533 -0.78911575
e 0.4170312 Incl. 5.43551 +0.23945930 -0.24006739
P 17.9
From 115 observations 2002 Mar. 5-2020 Apr. 21, mean residual 0".4.
P/2020 F1 = P/2002 E4
Epoch 2037 May 22.0 TT = JDT 2465200.5
T 2037 June 6.04676 TT Rudenko
q 3.9696886 (2000.0) P Q
n 0.05589992 Peri. 9.28474 -0.82468704 -0.56177684
a 6.7742607 Node 136.32304 +0.51263519 -0.79140694
e 0.4140042 Incl. 5.44744 +0.23894863 -0.24100173
P 17.6
From 115 observations 2002 Mar. 5-2020 Apr. 21, mean residual 0".4.
P/2020 F1 = P/2002 E4
Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2019 Aug. 29.16090 TT Rudenko
q 3.9830891 (2000.0) P Q
n 0.05525974 Peri. 8.67958 -0.82206085 -0.56567502
a 6.8264800 Node 136.65895 +0.51656247 -0.78893897
e 0.4165237 Incl. 5.43612 +0.23953950 -0.23997307
P 17.8
From 115 observations 2002 Mar. 5-2020 Apr. 21, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2020 04 21 11 29 17.8 +08 14 29 3.3841 4.1893 138.4 9.2 20.9
...
2020 05 06 11 27 47.2 +08 20 47 3.5729 4.2150 123.5 11.5 21.0
...
2020 05 14 11 28 14.8 +08 14 59 3.6877 4.2292 116.0 12.4 21.1
...
2020 05 20 11 29 09.9 +08 06 41 3.7786 4.2401 110.5 12.9 21.2
2020 05 21 11 29 21.8 +08 04 59 3.7941 4.2419 109.6 13.0 21.2
2020 05 22 11 29 34.6 +08 03 11 3.8097 4.2438 108.7 13.1 21.2
...
2020 05 28 11 31 07.6 +07 50 38 3.9048 4.2550 103.4 13.4 21.2
...
2020 06 05 11 33 53.2 +07 29 20 4.0346 4.2701 96.5 13.7 21.3
...
2020 06 20 11 40 59.0 +06 37 01 4.2823 4.2995 84.2 13.6 21.5
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-K92
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