MPEC 2021-R175 : 2021 RE4
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M.P.E.C. 2021-R175 Issued 2021 September 9, 10:03 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 RE4
Observations:
K21R04E* C2021 09 08.19913322 13 33.39 +11 19 52.3 21.22GVER175G96
K21R04E C2021 09 08.20434422 13 34.87 +11 19 43.3 20.50GVER175G96
K21R04E C2021 09 08.20956222 13 36.35 +11 19 34.2 21.32GVER175G96
K21R04E C2021 09 08.21478322 13 37.83 +11 19 25.5 21.19GVER175G96
K21R04E mC2021 09 08.28456222 13 57.45 +11 17 22.6 21.36GVER175G96
K21R04E mC2021 09 08.28515322 13 57.60 +11 17 21.3 VER175G96
K21R04E 1C2021 09 08.83672 22 16 47.66 +11 00 37.5 20.9 VVER175033
K21R04E 1C2021 09 08.83886 22 16 48.26 +11 00 33.7 21.2 VVER175033
K21R04E 1C2021 09 08.84100 22 16 48.89 +11 00 29.9 20.9 VVER175033
K21R04E 1C2021 09 08.84323 22 16 49.54 +11 00 26.0 20.9 VVER175033
K21R04E KC2021 09 08.86511022 16 55.96 +10 59 52.4 21.4 GVER175L01
K21R04E KC2021 09 08.86987222 16 57.29 +10 59 43.8 21.6 GVER175L01
K21R04E KC2021 09 08.87461922 16 58.65 +10 59 34.8 21.5 GVER175L01
K21R04E KC2021 09 08.87936622 16 59.97 +10 59 26.2 21.1 GVER175L01
K21R04E KC2021 09 09.23325322 18 46.83 +10 48 49.5 20.9 VuER175H21
K21R04E KC2021 09 09.23802722 18 48.21 +10 48 40.4 21.0 VuER175H21
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.
G96 Mt. Lemmon Survey. 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. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.81-m f/4.0 astrograph + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Pujagic, V. Dobos.
Measurer D. Pujagic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2021 RE4 Earth MOID = 0.1352 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 338.90941 (2000.0) P Q
n 0.33166784 Peri. 157.51239 +0.95655204 +0.29132792
a 2.0669683 Node 185.58897 -0.28240947 +0.91583157
e 0.4505589 Incl. 6.88314 -0.07247813 +0.27637037
P 2.97 H 24.40 G 0.15 U 9
Residuals in seconds of arc
210908 G96 0.2- 0.2- 210908 033 0.2+ 0.0 210908 L01 0.0 0.2-
210908 G96 0.0 0.2- 210908 033 0.2- 0.0 210908 L01 0.6- 0.4-
210908 G96 0.1- 0.1- 210908 033 0.0 0.1+ 210909 H21 0.1- 0.1+
210908 G96 0.1+ 0.2+ 210908 033 0.0 0.1+ 210909 H21 0.1+ 0.2-
210908 G96 0.0 0.1- 210908 L01 0.7+ 0.3+
210908 G96 0.3- 0.3- 210908 L01 0.1+ 0.3+
Ephemeris:
2021 RE4 a,e,i = 2.07, 0.45, 7 q = 1.1357
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 08 10 20 26 14.0 +16 13 58 0.1883 1.1739 145.6 29.2 22.4
...
2021 08 25 21 09 24.1 +16 01 30 0.1526 1.1438 148.6 27.4 21.8
...
2021 09 02 21 43 14.9 +13 58 15 0.1410 1.1368 153.3 23.5 21.5
...
2021 09 08 22 12 31.1 +11 26 07 0.1368 1.1358 158.3 19.2 21.3
2021 09 09 22 17 35.8 +10 56 26 0.1365 1.1360 159.2 18.4 21.3
2021 09 10 22 22 42.4 +10 25 43 0.1364 1.1363 160.1 17.6 21.3
...
2021 09 16 22 53 28.7 +07 06 16 0.1385 1.1402 165.8 12.5 21.1
...
2021 09 24 23 32 01.1 +02 33 56 0.1492 1.1511 171.9 7.1 21.1
...
2021 10 09 00 27 16.0 -03 46 24 0.1926 1.1878 167.5 10.5 21.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-R175
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