MPEC 2021-E148 : 2021 EM4
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M.P.E.C. 2021-E148 Issued 2021 March 15, 23:54 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 EM4
Observations:
K21E04M* C2021 03 15.39497713 35 02.82 +36 52 40.8 19.62cVEE148T05
K21E04M C2021 03 15.40724113 35 00.78 +36 50 21.8 19.66cVEE148T05
K21E04M C2021 03 15.43092313 34 56.55 +36 45 44.6 19.49cVEE148T05
K21E04M C2021 03 15.44774713 34 53.09 +36 42 25.6 19.54cVEE148T05
K21E04M IC2021 03 15.87230313 35 19.96 +34 54 19.7 19.4 GVEE148595
K21E04M KC2021 03 15.87248313 35 20.17 +34 54 23.4 19.1 GVEE148L01
K21E04M KC2021 03 15.87313313 35 20.14 +34 54 13.9 19.2 GVEE148L01
K21E04M IC2021 03 15.87624813 35 19.97 +34 53 28.2 19.4 GVEE148L01
K21E04M KC2021 03 15.87935013 35 19.71 +34 52 42.3 19.2 GVEE148L01
K21E04M KC2021 03 15.87999013 35 19.65 +34 52 33.1 19.2 GVEE148L01
K21E04M MC2021 03 15.88513613 35 19.02 +34 51 10.6 19.2 GVEE148595
K21E04M KC2021 03 15.89056813 35 18.65 +34 49 50.1 19.2 GVEE148595
K21E04M KC2021 03 15.90684013 35 17.13 +34 45 44.6 19.2 GVEE148595
K21E04M KC2021 03 15.91226913 35 16.61 +34 44 22.0 18.9 GVEE148595
K21E04M KC2021 03 15.91606713 35 16.15 +34 43 23.9 19.1 GVEE148595
K21E04M KC2021 03 15.92107613 35 22.23 +34 42 06.8 18.6 GVEE148B49
K21E04M KC2021 03 15.92380213 35 21.98 +34 41 26.9 19.1 GVEE148B49
K21E04M KC2021 03 15.92561313 35 21.82 +34 40 59.2 19.1 GVEE148B49
K21E04M KC2021 03 15.93514513 35 20.90 +34 38 34.3 19.3 GVEE148B49
K21E04M KC2021 03 15.94223613 35 15.25 +34 36 29.2 18.6 GVEE148203
K21E04M KC2021 03 15.95371313 35 13.75 +34 33 28.5 18.8 GVEE148203
K21E04M KC2021 03 15.95847813 35 12.86 +34 32 32.3 18.5 GVEE148K63
K21E04M KC2021 03 15.96587413 35 11.71 +34 30 34.1 19.4 GVEE148K63
K21E04M KC2021 03 15.97122013 35 10.85 +34 29 08.1 17.9 GVEE148K63
Observer details:
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
B49 Paus Observatory, Sabadell. Observer J. Camarasa. 0.30-m f/4 reflector +
CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.2 Newtonian reflector + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, J. Tonry, A. Heinze, H.
Weiland. Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, A.
Fitzsimmons, J. Robinson, N. Erasmus. 0.5-m reflector + CCD.
Orbital elements:
2021 EM4 Earth MOID = 0.0029 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 236.90886 (2000.0) P Q
n 0.86090557 Peri. 236.00827 -0.58222739 +0.81301065
a 1.0943738 Node 358.35871 -0.67650924 -0.48786374
e 0.1342103 Incl. 10.04591 -0.45093959 -0.31780916
P 1.14 H 26.9 G 0.15 U 7
Residuals in seconds of arc
210315 T05 0.1+ 0.0 210315 L01 0.1- 0.1- 210315 B49 0.6- 0.6+
210315 T05 0.6- 0.4+ 210315 L01 0.3- 0.2+ 210315 B49 0.5- 0.3+
210315 T05 0.5+ 1.3- 210315 595 0.2- 0.1+ 210315 B49 0.0 0.4+
210315 T05 0.1- 0.9+ 210315 595 0.5+ 0.6+ 210315 203 0.0 0.1-
210315 595 0.9+ 0.5- 210315 595 0.1- 0.0 210315 203 0.2+ 0.5-
210315 L01 0.1+ 0.1- 210315 595 0.4+ 0.1- 210315 K63 0.1+ 0.3+
210315 L01 0.2+ 0.1- 210315 595 0.2- 0.2- 210315 K63 0.1- 0.0
210315 L01 0.5+ 0.1+ 210315 B49 0.5- 0.7- 210315 K63 0.2- 0.1-
Ephemeris:
2021 EM4 a,e,i = 1.09, 0.13, 10 q = 0.9475
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 13 13 10 03.4 +47 07 59 0.1329 1.0708 125.9 48.3 24.5
...
2021 02 28 13 25 54.2 +47 35 04 0.07459 1.0378 127.7 49.1 23.2
...
2021 03 08 13 31 08.0 +46 02 56 0.04393 1.0209 129.3 48.8 22.0
...
2021 03 14 13 33 52.1 +40 32 35 0.02118 1.0089 133.6 45.5 20.3
2021 03 15 13 34 20.3 +38 07 53 0.01745 1.0070 135.5 43.8 19.8
2021 03 16 13 34 53.4 +34 23 33 0.01377 1.0050 138.3 41.2 19.2
...
2021 03 22 01 24 05.2 -73 20 15 0.01060 0.9936 74.9 104.5 20.9
...
2021 03 30 01 30 22.8 -55 53 34 0.04033 0.9795 60.7 117.3 24.5
...
2021 04 14 01 28 44.3 -50 22 55 0.09644 0.9579 59.7 115.3 26.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E148
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