MPEC 2021-E94 : 2021 EX2
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M.P.E.C. 2021-E94 Issued 2021 March 10, 03:43 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
2021 EX2
Observations:
K21E02X* C2021 03 07.11416001 32 30.45 +14 13 00.4 19.38rUEE094I41
K21E02X C2021 03 07.11656901 32 31.32 +14 13 06.1 19.32rUEE094I41
K21E02X C2021 03 07.11902001 32 32.18 +14 13 12.0 19.22rUEE094I41
K21E02X C2021 03 07.12385001 32 33.87 +14 13 23.0 19.25rUEE094I41
K21E02X KC2021 03 07.74966 01 36 14.57 +14 37 30.7 19.6 RoEE094K88
K21E02X KC2021 03 07.75089 01 36 14.98 +14 37 33.4 19.2 RoEE094K88
K21E02X 1C2021 03 07.75628 01 36 16.90 +14 37 45.1 20.5 VVEE094033
K21E02X 1C2021 03 07.75685 01 36 17.09 +14 37 46.1 19.9 VVEE094033
K21E02X KC2021 03 07.78736 01 36 27.83 +14 38 56.3 19.5 GVEE094204
K21E02X KC2021 03 07.79893 01 36 31.88 +14 39 23.3 VEE094204
K21E02X HC2021 03 07.81050 01 36 35.97 +14 39 49.2 VEE094204
K21E02X KC2021 03 08.76040501 42 11.02 +15 15 50.6 19.5 GVEE094595
K21E02X KC2021 03 08.76229801 42 11.76 +15 15 54.3 19.3 GVEE094K62
K21E02X 1C2021 03 08.76913 01 42 14.10 +15 16 10.3 19.7 VVEE094033
K21E02X 1C2021 03 08.76993 01 42 14.44 +15 16 12.3 19.7 VVEE094033
K21E02X 1C2021 03 08.77073 01 42 14.70 +15 16 13.8 20.0 VVEE094033
K21E02X 1C2021 03 08.77272 01 42 15.38 +15 16 18.1 19.7 VVEE094033
K21E02X KC2021 03 08.78071801 42 18.16 +15 16 36.4 19.4 GVEE094595
K21E02X KC2021 03 08.78930501 42 21.18 +15 16 55.4 19.3 GVEE094K62
K21E02X KC2021 03 08.80158501 42 25.58 +15 17 22.2 19.4 GVEE094K62
K21E02X C2021 03 09.58782501 47 02.84 +15 46 38.6 19.7 rVEE094N51
K21E02X C2021 03 09.59148301 47 04.13 +15 46 46.8 19.8 rVEE094N51
K21E02X KC2021 03 10.10138301 50 04.13 +16 05 29.5 19.30GVEE094I52
K21E02X KC2021 03 10.10212101 50 04.34 +16 05 30.6 20.42GVEE094I52
K21E02X KC2021 03 10.10286001 50 04.58 +16 05 32.2 19.79GVEE094I52
K21E02X KC2021 03 10.10359801 50 04.84 +16 05 33.7 19.98GVEE094I52
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, U. Laux, F. Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m
f/3 Schmidt + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
595 Farra d'Isonzo. Observers S. Aschi, G. Panterotto, E. Pettarin.
Measurer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
I41 Palomar Mountain--ZTF. Observers B. T. Bolin, Z. T. F. Collaboration.
Measurers B. T. Bolin, W.-H. Ip, Z.-Y. Lin, F. J. Masci. 1.2-m f/2.4
Schmidt.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. Rankin. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector +
CCD.
K62 Teplice Observatory. Observer Z. Moravec. 0.43-m f/4.5 reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
N51 GROWTH India Telescope, IAO, Hanle. Observers K. Sharma, P. Dorjay, V.
Bhalerao, G. C. Anupama, S. Barway. Measurer K. Sharma. 0.70-m f/6.5
Corrected Dall-Kirkham + CCD.
Orbital elements:
2021 EX2 Earth MOID = 0.0994 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 352.35123 (2000.0) P Q
n 0.14562254 Peri. 18.72566 +0.93910667 -0.34361396
a 3.5780822 Node 1.38129 +0.29827089 +0.81101458
e 0.8111719 Incl. 6.77998 +0.17062570 +0.47348157
P 6.77 H 17.7 G 0.15 U 9
Residuals in seconds of arc
210307 I41 0.2- 0.2- 210307 204 0.2- 0.2+ 210308 K62 0.6- 0.1+
210307 I41 0.1+ 0.1- 210307 204 0.0 0.4- 210308 K62 0.4+ 0.7-
210307 I41 0.1+ 0.1+ 210308 595 0.0 0.2- 210309 N51 0.4- 0.6-
210307 I41 0.0 0.1- 210308 K62 0.7+ 0.4- 210309 N51 0.4- 0.4-
210307 K88 0.4+ 0.8+ 210308 033 0.3- 0.3+ 210310 I52 0.8+ 0.6+
210307 K88 0.0 0.7+ 210308 033 0.5+ 0.5+ 210310 I52 0.0 0.1+
210307 033 0.1- 0.2+ 210308 033 0.2+ 0.2+ 210310 I52 0.3- 0.1+
210307 033 0.3- 0.1- 210308 033 0.1- 0.0 210310 I52 0.2- 0.0
210307 204 0.1+ 0.3- 210308 595 0.2- 0.0
Ephemeris:
2021 EX2 a,e,i = 3.58, 0.81, 7 q = 0.6756
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 08 22 58 16.9 -05 24 26 1.4339 0.6757 24.6 37.4 19.1
...
2021 02 23 00 22 06.7 +05 40 53 1.3257 0.7348 33.1 47.4 19.4
...
2021 03 03 01 08 24.2 +11 27 33 1.3037 0.8029 38.0 49.4 19.6
...
2021 03 09 01 43 35.6 +15 24 52 1.3067 0.8645 41.4 49.4 19.8
2021 03 10 01 49 28.4 +16 01 48 1.3088 0.8754 42.0 49.3 19.8
2021 03 11 01 55 21.2 +16 37 54 1.3114 0.8864 42.5 49.2 19.9
...
2021 03 17 02 30 30.2 +19 55 29 1.3368 0.9555 45.5 48.0 20.0
...
2021 03 25 03 16 22.4 +23 23 43 1.3947 1.0525 48.8 45.5 20.3
...
2021 04 09 04 35 45.4 +27 08 00 1.5655 1.2407 52.4 39.7 20.7
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E94
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