MPEC 2021-E118 : 2021 ER3
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M.P.E.C. 2021-E118 Issued 2021 March 11, 20:47 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 ER3
Observations:
K21E03R* C2021 03 10.95082 11 19 27.07 +41 27 18.3 17.2 RoEE118K88
K21E03R C2021 03 10.95112 11 19 28.42 +41 26 54.9 17.3 RoEE118K88
K21E03R C2021 03 10.95141 11 19 29.80 +41 26 31.3 17.2 RoEE118K88
K21E03R C2021 03 10.95171 11 19 31.17 +41 26 08.2 17.2 RoEE118K88
K21E03R C2021 03 10.97217 11 21 03.28 +40 59 28.7 17.5 RoEE118K88
K21E03R C2021 03 10.97243 11 21 04.40 +40 59 08.8 17.4 RoEE118K88
K21E03R C2021 03 10.97274 11 21 05.80 +40 58 44.2 17.3 RoEE118K88
K21E03R C2021 03 10.97300 11 21 06.94 +40 58 24.4 17.3 RoEE118K88
K21E03R C2021 03 10.97326 11 21 08.08 +40 58 03.9 17.2 RoEE118K88
K21E03R C2021 03 10.97353 11 21 09.27 +40 57 43.3 17.3 RoEE118K88
K21E03R KC2021 03 10.97361311 21 17.79 +40 58 35.6 17.1 GVEE118K63
K21E03R C2021 03 10.97379 11 21 10.48 +40 57 23.1 17.4 RoEE118K88
K21E03R KC2021 03 10.97383011 21 15.76 +40 58 01.0 17.7 GVEE118L01
K21E03R C2021 03 10.97405 11 21 11.55 +40 57 03.3 17.3 RoEE118K88
K21E03R KC2021 03 10.97426711 21 17.67 +40 57 27.2 17.3 GVEE118L01
K21E03R KC2021 03 10.97476011 21 22.82 +40 57 06.9 17.5 GVEE118K63
K21E03R C2021 03 10.97490 11 21 15.35 +40 55 57.1 17.2 RoEE118K88
K21E03R C2021 03 10.97516 11 21 16.49 +40 55 37.6 17.0 RoEE118K88
K21E03R C2021 03 10.97542 11 21 17.66 +40 55 16.6 17.3 RoEE118K88
K21E03R KC2021 03 10.97542011 21 22.74 +40 55 58.2 17.3 GVEE118L01
K21E03R C2021 03 10.97569 11 21 18.76 +40 54 56.2 17.2 RoEE118K88
K21E03R KC2021 03 10.97591111 21 27.84 +40 55 38.0 17.0 GVEE118K63
K21E03R C2021 03 10.97595 11 21 19.94 +40 54 35.9 17.3 RoEE118K88
K21E03R C2021 03 10.97621 11 21 21.11 +40 54 14.9 17.3 RoEE118K88
K21E03R C2021 03 10.97648 11 21 22.28 +40 53 54.4 17.3 RoEE118K88
K21E03R KC2021 03 10.97656511 21 27.75 +40 54 29.8 17.3 GVEE118L01
K21E03R C2021 03 10.97674 11 21 23.43 +40 53 34.4 17.3 RoEE118K88
K21E03R KC2021 03 10.97711311 21 33.11 +40 54 05.3 17.3 GVEE118K63
K21E03R KC2021 03 10.97771011 21 32.77 +40 53 01.3 17.4 GVEE118L01
K21E03R KC2021 03 10.97830611 21 38.33 +40 52 33.8 16.8 GVEE118K63
K21E03R KC2021 03 10.97843111 21 35.91 +40 52 05.7 17.5 GVEE118L01
K21E03R C2021 03 11.00138 11 23 09.79 +40 22 01.9 17.2 RoEE118K88
K21E03R C2021 03 11.00164 11 23 10.93 +40 21 42.0 17.2 RoEE118K88
K21E03R C2021 03 11.00190 11 23 12.05 +40 21 21.9 17.2 RoEE118K88
K21E03R C2021 03 11.00216 11 23 13.15 +40 21 01.9 17.2 RoEE118K88
K21E03R C2021 03 11.00243 11 23 14.25 +40 20 42.0 17.2 RoEE118K88
K21E03R C2021 03 11.00269 11 23 15.35 +40 20 22.4 17.1 RoEE118K88
K21E03R C2021 03 11.00295 11 23 16.47 +40 20 02.1 17.2 RoEE118K88
K21E03R C2021 03 11.00326 11 23 17.76 +40 19 38.7 17.0 RoEE118K88
K21E03R KC2021 03 11.09410911 29 20.92 +38 28 55.3 17.4 GVEE118L01
K21E03R C2021 03 11.09440 11 29 20.28 +38 27 38.4 17.2 RoEE118K88
K21E03R C2021 03 11.09466 11 29 21.24 +38 27 19.9 17.3 RoEE118K88
K21E03R KC2021 03 11.09468311 29 23.06 +38 28 14.3 17.4 GVEE118L01
K21E03R C2021 03 11.09492 11 29 22.23 +38 27 01.3 17.2 RoEE118K88
K21E03R C2021 03 11.09518 11 29 23.21 +38 26 42.8 17.1 RoEE118K88
K21E03R KC2021 03 11.09525611 29 25.18 +38 27 33.6 17.4 GVEE118L01
K21E03R C2021 03 11.09544 11 29 24.16 +38 26 24.3 17.1 RoEE118K88
K21E03R C2021 03 11.09570 11 29 25.13 +38 26 05.6 17.2 RoEE118K88
K21E03R KC2021 03 11.09582511 29 27.30 +38 26 53.1 17.5 GVEE118L01
K21E03R C2021 03 11.09596 11 29 26.15 +38 25 47.0 17.2 RoEE118K88
K21E03R C2021 03 11.09622 11 29 27.09 +38 25 28.6 17.1 RoEE118K88
K21E03R KC2021 03 11.09639911 29 29.43 +38 26 12.0 17.5 GVEE118L01
K21E03R KC2021 03 11.09697811 29 31.59 +38 25 30.9 17.5 GVEE118L01
K21E03R KC2021 03 11.09755211 29 33.71 +38 24 50.0 17.5 GVEE118L01
K21E03R KC2021 03 11.09812511 29 35.84 +38 24 09.3 17.3 GVEE118L01
K21E03R KC2021 03 11.13432811 33 07.36 +37 39 25.7 17.3 GVEE118U55
K21E03R KC2021 03 11.13688411 33 16.53 +37 36 38.2 17.7 GVEE118U55
K21E03R KC2021 03 11.13950711 33 25.94 +37 33 46.6 17.1 GVEE118U55
K21E03R C2021 03 11.15112 11 32 46.70 +37 21 38.5 17.4 RoEE118K88
K21E03R C2021 03 11.15138 11 32 47.61 +37 21 20.7 17.2 RoEE118K88
K21E03R C2021 03 11.15164 11 32 48.51 +37 21 03.3 17.1 RoEE118K88
K21E03R C2021 03 11.15190 11 32 49.47 +37 20 45.1 17.1 RoEE118K88
K21E03R C2021 03 11.15217 11 32 50.34 +37 20 27.8 17.2 RoEE118K88
K21E03R C2021 03 11.15243 11 32 51.30 +37 20 09.4 17.2 RoEE118K88
K21E03R C2021 03 11.15269 11 32 52.20 +37 19 52.1 17.1 RoEE118K88
K21E03R C2021 03 11.15295 11 32 53.13 +37 19 34.1 17.2 RoEE118K88
K21E03R KC2021 03 11.15382211 34 19.73 +37 22 06.4 17.6 VqEE118858
K21E03R KC2021 03 11.15905311 34 37.26 +37 16 29.3 17.6 VqEE118858
K21E03R KC2021 03 11.16599211 35 00.25 +37 09 03.6 17.5 VqEE118858
K21E03R KC2021 03 11.17294911 35 22.99 +37 01 39.3 17.5 VqEE118858
K21E03R KC2021 03 11.17649711 35 38.37 +36 58 01.1 17.06GVEE118I52
K21E03R KC2021 03 11.17688811 35 39.61 +36 57 36.6 17.01GVEE118I52
K21E03R KC2021 03 11.17727811 35 40.88 +36 57 11.8 17.23GVEE118I52
K21E03R KC2021 03 11.17766911 35 42.16 +36 56 46.8 16.99GVEE118I52
K21E03R KC2021 03 11.21912 11 37 37.89 +36 13 04.2 17.3 RqEE118H36
K21E03R KC2021 03 11.22086 11 37 43.09 +36 11 16.6 17.4 RqEE118H36
K21E03R KC2021 03 11.22312 11 37 49.81 +36 08 55.3 17.5 RqEE118H36
K21E03R KC2021 03 11.22538 11 37 56.48 +36 06 35.2 17.4 RqEE118H36
K21E03R KC2021 03 11.68542 11 56 46.29 +29 25 21.4 17.5 GVEE118N82
K21E03R KC2021 03 11.69049 11 56 54.92 +29 21 48.2 17.8 GVEE118N82
K21E03R KC2021 03 11.69509 11 57 02.63 +29 18 36.3 17.4 GVEE118N82
K21E03R 1C2021 03 11.82275 12 00 49.91 +27 51 28.8 18.1 VVEE118033
K21E03R 1C2021 03 11.82311 12 00 50.45 +27 51 15.5 18.0 VVEE118033
K21E03R 1C2021 03 11.82346 12 00 50.98 +27 51 02.4 18.3 VVEE118033
K21E03R KC2021 03 11.85236012 01 36.79 +27 32 35.1 17.8 GVEE118J95
K21E03R KC2021 03 11.85573112 01 41.79 +27 30 31.8 17.8 GVEE118J95
K21E03R KC2021 03 11.85820012 01 45.44 +27 29 01.9 18.1 GVEE118J95
K21E03R KC2021 03 11.86053012 01 48.85 +27 27 37.0 18.0 GVEE118J95
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.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
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.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.2 Newtonian reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
N82 Multa Observatory. Observer L. Elenin. 0.4-m f/1.25 reflector + CCD.
U55 Golden Ears Observatory, Maple Ridge. Observer B. Kumar. 0.36-m f/7
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 ER3 Earth MOID = 0.0046 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 343.37295 (2000.0) P Q
n 0.36682164 Peri. 313.06637 -0.44282686 -0.89649837
a 1.9327073 Node 163.20226 +0.83602666 -0.41848500
e 0.5579562 Incl. 2.76997 +0.32398117 -0.14546815
P 2.69 H 26.0 G 0.15 U 6
Residuals in seconds of arc
210310 K88 0.0 0.1+ 210310 L01 0.0 0.3- 210311 K88 0.2- 0.2+
210310 K88 0.3- 0.3+ 210311 K88 0.4- 0.3+ 210311 K88 0.3+ 0.3-
210310 K88 0.3+ 0.5- 210311 K88 0.1+ 0.2+ 210311 K88 0.7- 0.9+
210310 K88 0.3+ 0.0 210311 K88 0.3+ 0.1- 210311 K88 0.1- 0.2+
210310 K88 0.1+ 0.0 210311 K88 0.3+ 0.3- 210311 K88 0.3- 0.6+
210310 K88 0.2- 0.3+ 210311 K88 0.2- 0.4+ 210311 K88 0.2- 0.3+
210310 K88 0.1+ 0.2- 210311 K88 0.2- 0.5+ 210311 858 0.1+ 0.3-
210310 K88 0.0 0.2+ 210311 K88 0.0 0.0 210311 858 0.1+ 0.2-
210310 K88 0.1- 0.2- 210311 K88 0.2- 0.2+ 210311 858 0.1+ 0.4-
210310 K88 0.2- 0.2+ 210311 L01 0.0 0.1- 210311 858 0.1+ 0.2-
210310 K63 0.2+ 0.5- 210311 K88 0.0 0.4+ 210311 I52 0.2- 0.1-
210310 K88 0.5+ 0.2+ 210311 K88 0.2- 0.4+ 210311 I52 0.5- 0.2+
210310 L01 0.1+ 0.5- 210311 L01 0.1+ 0.2- 210311 I52 0.4- 0.2+
210310 K88 0.4- 0.5+ 210311 K88 0.0 0.4+ 210311 I52 0.2- 0.1-
210310 L01 0.0 0.5- 210311 K88 0.0 0.4+ 210311 H36 0.9+ 1.3-
210310 K63 0.2+ 0.6- 210311 L01 0.1- 0.0 210311 H36 1.1+ 0.7-
210310 K88 0.2+ 0.2+ 210311 K88 0.3- 0.4+ 210311 H36 (1.2+ 1.7-)
210310 K88 0.1+ 0.9+ 210311 K88 0.3- 0.3+ 210311 H36 (1.0+ 1.6-)
210310 K88 0.4+ 0.1+ 210311 L01 0.0 0.0 210311 N82 0.2- 0.2-
210310 L01 0.1+ 0.4- 210311 K88 0.2+ 0.2+ 210311 N82 0.3+ 0.5-
210310 K88 0.7- 0.6+ 210311 K88 0.2- 0.3+ 210311 N82 0.1- 0.3+
210310 K63 0.0 0.7- 210311 L01 0.1- 0.2- 210311 033 0.3+ 0.2-
210310 K88 0.3- 0.4+ 210311 L01 0.1+ 0.1- 210311 033 0.2+ 0.0
210310 K88 0.0 0.4- 210311 L01 0.0 0.1- 210311 033 0.1+ 0.0
210310 K88 0.2- 0.0 210311 L01 0.0 0.1- 210311 J95 0.2- 0.0
210310 L01 0.0 0.3- 210311 U55 0.2+ 0.2+ 210311 J95 0.1- 0.1-
210310 K88 0.1- 0.1+ 210311 U55 0.1+ 0.2+ 210311 J95 0.1+ 0.1+
210310 K63 0.2+ 0.7- 210311 U55 0.5+ 0.1+ 210311 J95 0.0 0.1+
210310 L01 0.1+ 0.4- 210311 K88 0.1+ 0.1-
210310 K63 0.4+ 0.2- 210311 K88 0.0 0.1-
Ephemeris:
2021 ER3 a,e,i = 1.93, 0.56, 3 q = 0.8543
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 09 00 41 39.2 -02 21 02 0.2101 0.8628 48.8 120.7 27.2
...
2021 02 24 00 57 29.2 +00 30 12 0.09871 0.9143 38.4 137.7 27.3
...
2021 03 04 01 09 58.7 +05 53 32 0.04193 0.9575 35.1 143.5 26.4
...
2021 03 10 07 32 48.9 +64 18 55 0.0073490.9953 107.6 72.0 17.8
2021 03 11 11 23 15.0 +40 26 50 0.01076 1.0020 143.4 36.3 17.6
2021 03 12 12 04 47.0 +26 10 51 0.01663 1.0088 155.6 24.0 18.2
...
2021 03 18 12 40 10.5 +09 22 01 0.05786 1.0513 165.0 14.1 20.7
...
2021 03 26 12 45 18.5 +05 57 49 0.1160 1.1118 169.7 9.3 22.2
...
2021 04 10 12 46 44.2 +03 47 28 0.2362 1.2327 166.5 10.9 24.0
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E118
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