MPEC 2021-E54 : 2021 EM1
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M.P.E.C. 2021-E54 Issued 2021 March 7, 21:50 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 EM1
Observations:
K21E01M* C2021 03 06.23907210 04 31.37 +11 18 52.0 19.66GVEE054G96
K21E01M C2021 03 06.24424310 04 29.96 +11 20 25.0 19.94GVEE054G96
K21E01M C2021 03 06.24945210 04 28.57 +11 21 57.8 VEE054G96
K21E01M C2021 03 06.25467310 04 27.28 +11 23 29.7 VEE054G96
K21E01M KC2021 03 06.29888710 04 15.00 +11 36 31.3 20.3 VqEE054858
K21E01M KC2021 03 06.30017610 04 12.50 +11 36 40.3 19.9 VuEE054H21
K21E01M KC2021 03 06.30276810 04 14.06 +11 37 39.9 19.1 VqEE054858
K21E01M KC2021 03 06.30299510 04 11.82 +11 37 30.1 19.9 VuEE054H21
K21E01M KC2021 03 06.30670810 04 10.88 +11 38 35.9 19.9 VuEE054H21
K21E01M KC2021 03 06.30831910 04 10.46 +11 39 04.5 19.8 VuEE054H21
K21E01M KC2021 03 06.32004310 04 09.54 +11 42 45.7 20.2 VqEE054858
K21E01M KC2021 03 06.42274610 03 43.89 +12 13 09.3 19.47GVEE054I52
K21E01M KC2021 03 06.42473210 03 43.41 +12 13 44.3 19.32GVEE054I52
K21E01M KC2021 03 06.42671310 03 42.93 +12 14 19.1 19.17GVEE054I52
K21E01M KC2021 03 06.42868910 03 42.49 +12 14 53.8 19.20GVEE054I52
K21E01M KC2021 03 06.77278010 02 41.53 +13 55 56.7 19.9 RVEE054K61
K21E01M KC2021 03 06.77389510 02 41.27 +13 56 15.8 19.7 RVEE054K61
K21E01M KC2021 03 06.77478710 02 41.04 +13 56 31.7 19.6 RVEE054K61
K21E01M KC2021 03 06.77556810 02 40.85 +13 56 45.8 19.6 RVEE054K61
K21E01M 1C2021 03 06.79869 10 02 35.38 +14 03 32.8 20.5 VVEE054033
K21E01M 1C2021 03 06.79955 10 02 35.18 +14 03 48.0 20.7 VVEE054033
K21E01M 1C2021 03 06.80042 10 02 34.97 +14 04 03.3 20.6 VVEE054033
K21E01M 1C2021 03 06.85983510 02 20.25 +14 21 40.4 VEE054246
K21E01M 1C2021 03 06.86016810 02 20.18 +14 21 46.9 VEE054246
K21E01M 1C2021 03 06.86037010 02 20.12 +14 21 50.4 VEE054246
K21E01M 1C2021 03 06.86133510 02 19.84 +14 22 06.1 VEE054246
K21E01M KC2021 03 06.86551210 02 19.06 +14 23 26.6 18.6 GVEE054595
K21E01M KC2021 03 06.87967210 02 15.41 +14 27 37.7 20.0 GVEE054595
K21E01M C2021 03 06.89022 10 02 04.90 +14 30 36.9 19.7 GVEE054N88
K21E01M C2021 03 06.89060 10 02 04.87 +14 30 43.5 19.2 GVEE054N88
K21E01M C2021 03 06.89096 10 02 04.74 +14 30 49.3 19.8 GVEE054N88
K21E01M KC2021 03 06.89098510 02 12.57 +14 30 58.1 19.8 GVEE054595
K21E01M C2021 03 06.89172 10 02 04.54 +14 31 02.7 19.7 GVEE054N88
K21E01M KC2021 03 06.89178710 02 12.31 +14 31 13.0 19.6 GVEE054L01
K21E01M KC2021 03 06.89360010 02 11.85 +14 31 45.1 19.9 GVEE054L01
K21E01M KC2021 03 06.89375 10 02 12.28 +14 31 38.1 19.8 GVEE054A17
K21E01M KC2021 03 06.89542610 02 11.39 +14 32 17.0 19.7 GVEE054L01
K21E01M KC2021 03 06.89723710 02 10.92 +14 32 49.3 19.9 GVEE054L01
K21E01M KC2021 03 06.90152310 02 09.80 +14 34 04.9 20.0 GVEE054L01
K21E01M KC2021 03 06.90357 10 02 09.78 +14 34 31.7 19.7 GVEE054A17
K21E01M KC2021 03 06.91144 10 02 07.81 +14 36 50.3 19.6 GVEE054A17
K21E01M KC2021 03 06.92586 10 02 03.94 +14 41 04.1 18.9 GVEE054K87
K21E01M KC2021 03 06.94966 10 01 57.88 +14 48 02.8 19.6 GVEE054K87
K21E01M 1C2021 03 06.97758 10 01 50.72 +14 56 10.8 20.1 VVEE054033
K21E01M 1C2021 03 06.97844 10 01 50.51 +14 56 25.9 19.8 VVEE054033
K21E01M 1C2021 03 06.97930 10 01 50.28 +14 56 41.1 19.7 VVEE054033
K21E01M KC2021 03 07.15421710 01 17.29 +15 48 15.7 20.0 VuEE054H21
K21E01M KC2021 03 07.16002810 01 15.76 +15 49 57.7 20.1 VuEE054H21
K21E01M KC2021 03 07.16370810 01 14.81 +15 51 02.5 20.0 VuEE054H21
K21E01M KC2021 03 07.18207410 01 13.25 +15 56 36.5 19.31GVEE054I52
K21E01M KC2021 03 07.18322010 01 12.96 +15 56 57.0 19.51GVEE054I52
K21E01M KC2021 03 07.18398210 01 12.05 +15 57 05.4 19.9 VqEE054858
K21E01M KC2021 03 07.18436410 01 12.65 +15 57 16.6 19.75GVEE054I52
K21E01M KC2021 03 07.18550010 01 12.33 +15 57 36.4 19.57GVEE054I52
K21E01M KC2021 03 07.18810210 01 10.98 +15 58 17.8 20.0 VqEE054858
K21E01M KC2021 03 07.19221710 01 09.89 +15 59 30.2 19.8 VqEE054858
K21E01M C2021 03 07.21637 10 01 05.12 +16 06 33.3 19.1 GVEE054654
K21E01M C2021 03 07.27042 10 00 50.84 +16 22 20.3 19.8 GVEE054654
K21E01M C2021 03 07.28048810 00 47.14 +16 25 22.0 19.88GVEE054703
K21E01M C2021 03 07.28618810 00 45.59 +16 26 58.7 20.12GVEE054703
K21E01M C2021 03 07.29189010 00 44.09 +16 28 38.7 19.93GVEE054703
K21E01M C2021 03 07.29760010 00 42.64 +16 30 18.5 19.72GVEE054703
K21E01M C2021 03 07.30440 10 00 41.79 +16 32 13.1 19.4 GVEE054654
K21E01M 1C2021 03 07.76014 09 59 10.35 +18 42 54.6 20.1 VVEE054033
K21E01M 1C2021 03 07.76112 09 59 10.11 +18 43 11.3 20.0 VVEE054033
K21E01M 1C2021 03 07.76210 09 59 09.90 +18 43 28.3 19.9 VVEE054033
K21E01M KC2021 03 07.85873409 58 46.69 +19 11 32.0 qEE054104
K21E01M KC2021 03 07.86172109 58 45.88 +19 12 23.4 19.3 RqEE054104
K21E01M KC2021 03 07.86470709 58 45.15 +19 13 14.8 19.7 RqEE054104
K21E01M 1C2021 03 07.87893509 58 40.88 +19 17 09.2 VEE054246
K21E01M 1C2021 03 07.87943709 58 40.82 +19 17 16.4 VEE054246
K21E01M 1C2021 03 07.88094809 58 40.43 +19 17 43.5 VEE054246
K21E01M 1C2021 03 07.88151709 58 40.24 +19 17 52.3 VEE054246
K21E01M 1C2021 03 07.88199109 58 40.07 +19 18 01.3 VEE054246
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.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha, M. Honkova.
Measurer M. Tichy. 1.06-m f/2.7 reflector + 2048x2048 CCD.
595 Farra d'Isonzo. Observers S. Aschi, E. Pettarin. Measurer S. Aschi.
0.40-m f/5.15 reflector + CCD.
654 Table Mountain Observatory, Wrightwood-PHMC. Observers P. Choi, N. Saini,
C. Zhai, R. Trahan, M. Shao.
703 Catalina Sky Survey. Observer K. W. Wierzchos. 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. 0.68-m Schmidt + 10K
CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6 Schmidt-Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. 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. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
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.
K61 Rokycany Observatory. Observer M. Adamovsky. 0.51-m f/6.8 reflector +
CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.3-m f/8.0
Schmidt-Cassegrain + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Pujagic, V. Dobos.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
N88 Xingming Observatory #3, Nanshan. Observer X. Gao. Measurer Q.-Z. Ye.
0.6-m f/8 Ritchey-Chretien + CCD.
Orbital elements:
2021 EM1 Earth MOID = 0.0574 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 100.49900 (2000.0) P Q
n 1.14493221 Peri. 171.70434 +0.91843928 +0.38769325
a 0.9049325 Node 164.74541 -0.37788979 +0.91861238
e 0.1631318 Incl. 17.36031 -0.11691275 +0.07645414
P 0.86 H 25.0 G 0.15 U 7
Residuals in seconds of arc
210306 G96 0.4+ 0.1- 210306 246 0.4- 1.5- 210307 I52 0.1+ 0.3+
210306 G96 0.3- 0.7+ 210306 595 0.4+ 0.9- 210307 858 0.0 0.3+
210306 G96 0.6- 0.6+ 210306 595 0.2- 0.1- 210307 I52 0.0 0.2-
210306 G96 0.7+ 0.6- 210306 N88 0.5- 0.8+ 210307 I52 0.4- 0.4-
210306 858 0.5+ 0.7+ 210306 N88 0.4+ 0.7+ 210307 858 0.1+ 0.2+
210306 H21 0.5- 0.3- 210306 N88 0.3- 0.2+ 210307 858 0.1- 0.3+
210306 858 1.6+ 0.4+ 210306 595 0.5+ 0.5+ 210307 654 0.1+ 0.0
210306 H21 0.1- 0.5- 210306 N88 0.6- 0.4+ 210307 654 0.1- 0.2-
210306 H21 0.2- 0.4- 210306 L01 0.1- 0.1- 210307 703 0.1- 1.1+
210306 H21 0.4- 0.4- 210306 L01 0.0 0.0 210307 703 0.5- 1.5-
210306 858 1.2+ 0.3- 210306 A17 0.1+ 0.3- 210307 703 0.2- 0.8-
210306 I52 0.3- 0.0 210306 L01 0.1+ 0.4- 210307 703 0.9+ 0.4-
210306 I52 0.3- 0.0 210306 L01 0.0 0.0 210307 654 0.1- 0.2-
210306 I52 0.3- 0.2- 210306 L01 0.2- 0.0 210307 033 0.0 0.4+
210306 I52 0.2+ 0.3- 210306 A17 0.1- 0.0 210307 033 0.1- 0.1+
210306 K61 0.2- 1.4+ 210306 A17 0.2+ 0.3- 210307 033 0.2+ 0.1+
210306 K61 0.1- 0.7+ 210306 K87 0.3- 0.2- 210307 104 0.3+ 0.5+
210306 K61 0.4- 0.7+ 210306 K87 0.6- 0.3- 210307 104 0.3- 0.5+
210306 K61 0.5- 1.0+ 210306 033 0.2- 0.1- 210307 104 0.2+ 0.5+
210306 033 0.1+ 0.1+ 210306 033 0.1- 0.1- 210307 246 0.2- 0.4+
210306 033 0.2+ 0.0 210306 033 0.3- 0.1+ 210307 246 0.8+ 1.0-
210306 033 0.1+ 0.1- 210307 H21 0.1+ 0.2+ 210307 246 0.8+ 0.2+
210306 246 0.0 0.7- 210307 H21 0.1- 0.1+ 210307 246 0.1+ 0.8-
210306 246 0.2+ 0.1- 210307 H21 0.0 0.3+ 210307 246 0.6- 0.1+
210306 246 0.1+ 0.2- 210307 I52 0.0 0.0
Ephemeris:
2021 EM1 a,e,i = 0.90, 0.16, 17 q = 0.7573
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 05 11 10 28.0 -53 17 39 0.1649 1.0444 106.3 65.0 23.5
...
2021 02 20 10 47 05.4 -39 16 51 0.09634 1.0521 129.1 46.8 21.8
...
2021 02 28 10 25 17.1 -17 22 35 0.06815 1.0523 154.2 24.2 20.4
...
2021 03 06 10 05 20.3 +10 08 31 0.06063 1.0505 164.4 14.8 19.8
2021 03 07 10 01 48.0 +15 03 56 0.06104 1.0501 160.7 18.2 20.0
2021 03 08 09 58 13.4 +19 52 31 0.06194 1.0496 156.4 22.2 20.1
...
2021 03 14 09 36 32.3 +43 28 33 0.07576 1.0458 131.4 45.5 21.2
...
2021 03 22 09 09 49.3 +60 28 39 0.1067 1.0383 110.4 64.1 22.5
...
2021 04 06 08 33 16.2 +72 50 04 0.1719 1.0172 90.6 79.6 24.0
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E54
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