MPEC 2021-R68 : 2021 RH
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M.P.E.C. 2021-R68 Issued 2021 September 4, 23:26 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 RH
Observations:
K21R00H* C2021 09 03.82047 21 38 03.40 +04 36 08.8 17.7 RoER068K88
K21R00H C2021 09 03.82102 21 38 03.56 +04 35 37.2 17.4 RoER068K88
K21R00H C2021 09 03.82152 21 38 03.74 +04 35 11.1 17.3 RoER068K88
K21R00H tC2021 09 03.82201 21 38 03.86 +04 34 51.2 17.5 RoER068K88
K21R00H tC2021 09 03.82307 21 38 04.32 +04 33 57.4 17.5 RoER068K88
K21R00H tC2021 09 03.82405 21 38 04.42 +04 33 07.3 17.5 RoER068K88
K21R00H tC2021 09 03.82454 21 38 04.55 +04 32 42.5 17.3 RoER068K88
K21R00H tC2021 09 03.82509 21 38 04.78 +04 32 12.9 17.0 RoER068K88
K21R00H tC2021 09 03.82558 21 38 04.86 +04 31 50.9 17.3 RoER068K88
K21R00H tC2021 09 03.82919 21 38 05.88 +04 28 46.5 17.3 RoER068K88
K21R00H tC2021 09 03.83018 21 38 06.28 +04 27 58.8 17.5 RoER068K88
K21R00H tC2021 09 03.83067 21 38 06.31 +04 27 32.7 17.2 RoER068K88
K21R00H tC2021 09 03.83123 21 38 06.50 +04 27 03.6 17.3 RoER068K88
K21R00H tC2021 09 03.83173 21 38 06.73 +04 26 40.9 17.5 RoER068K88
K21R00H tC2021 09 03.83222 21 38 06.76 +04 26 17.0 17.4 RoER068K88
K21R00H KC2021 09 03.84333321 38 15.77 +04 16 30.0 18.0 GVER068J95
K21R00H KC2021 09 03.84447521 38 16.09 +04 15 32.1 18.3 GVER068J95
K21R00H KC2021 09 03.84566621 38 16.49 +04 14 32.4 18.1 GVER068J95
K21R00H KC2021 09 03.84685121 38 16.87 +04 13 32.3 18.5 GVER068J95
K21R00H KC2021 09 03.84739 21 38 11.08 +04 13 29.6 17.7 RoER068K88
K21R00H KC2021 09 03.84887 21 38 11.49 +04 12 14.4 17.9 RoER068K88
K21R00H KC2021 09 03.85036 21 38 11.88 +04 10 59.3 17.7 RoER068K88
K21R00H KC2021 09 03.86445 21 38 15.76 +03 59 07.9 17.8 RoER068K88
K21R00H KC2021 09 03.86536 21 38 16.03 +03 58 21.4 17.9 RoER068K88
K21R00H KC2021 09 03.86629 21 38 16.26 +03 57 34.0 17.8 RoER068K88
K21R00H KC2021 09 03.86718 21 38 16.52 +03 56 49.4 18.1 RoER068K88
K21R00H KC2021 09 03.86808 21 38 16.73 +03 56 04.6 17.9 RoER068K88
K21R00H KC2021 09 03.87319521 38 20.61 +03 52 00.5 17.6 GVER068L01
K21R00H KC2021 09 03.87376521 38 20.73 +03 51 31.2 17.6 GVER068L01
K21R00H KC2021 09 03.87434121 38 20.89 +03 51 02.1 17.5 GVER068L01
K21R00H KC2021 09 03.87491721 38 21.05 +03 50 32.8 17.8 GVER068L01
K21R00H KC2021 09 03.87564421 38 21.23 +03 49 56.7 17.7 GVER068L01
K21R00H KC2021 09 03.88671 21 38 23.58 +03 40 01.9 18.9 GVER068C43
K21R00H KC2021 09 03.88693621 38 26.01 +03 40 22.3 18.9 GVER068K38
K21R00H KC2021 09 03.88975 21 38 24.40 +03 37 28.3 18.9 GVER068C43
K21R00H KC2021 09 03.89279 21 38 25.30 +03 34 54.9 18.2 GVER068C43
K21R00H KC2021 09 03.89475921 38 28.12 +03 33 45.9 18.4 GVER068K38
K21R00H KC2021 09 03.89558321 38 28.35 +03 33 04.9 VER068204
K21R00H KC2021 09 03.89583 21 38 26.22 +03 32 21.7 18.7 GVER068C43
K21R00H KC2021 09 03.89985721 38 29.51 +03 29 29.0 19.0 GVER068204
K21R00H KC2021 09 03.90412621 38 30.63 +03 25 53.1 VER068204
K21R00H KC2021 09 03.90482121 38 29.03 +03 25 18.7 18.4 GVER068595
K21R00H KC2021 09 03.90902521 38 31.86 +03 21 47.3 18.4 GVER068203
K21R00H KC2021 09 03.91189 21 38 31.94 +03 19 31.3 18.3 GVER068104
K21R00H KC2021 09 03.91409121 38 33.20 +03 17 31.4 18.1 GVER068203
K21R00H KC2021 09 03.91455 21 38 32.65 +03 17 17.1 18.1 GVER068104
K21R00H KC2021 09 03.91512621 38 31.76 +03 16 37.0 18.3 GVER068595
K21R00H KC2021 09 03.91639521 38 36.82 +03 15 00.3 16.7 GVER068Z80
K21R00H KC2021 09 03.91721 21 38 33.34 +03 15 02.6 18.1 GVER068104
K21R00H KC2021 09 03.91856021 38 32.67 +03 13 43.7 18.2 GVER068595
K21R00H KC2021 09 03.92082321 38 34.98 +03 11 50.8 17.9 GVER068203
K21R00H KC2021 09 03.92125621 38 38.19 +03 10 54.8 18.3 GVER068Z80
K21R00H KC2021 09 03.92542321 38 34.50 +03 07 56.7 18.0 GVER068595
K21R00H KC2021 09 03.92611821 38 39.54 +03 06 49.5 VER068Z80
K21R00H 1C2021 09 03.92992 21 38 36.54 +03 03 40.3 18.5 VVER068033
K21R00H 1C2021 09 03.93021 21 38 36.62 +03 03 25.8 18.4 VVER068033
K21R00H 1C2021 09 03.93049 21 38 36.70 +03 03 11.1 18.3 VVER068033
K21R00H KC2021 09 03.93304 21 38 34.88 +03 01 10.8 18.0 GXER068G02
K21R00H KC2021 09 03.93416 21 38 35.18 +03 00 14.9 18.3 GXER068G02
K21R00H KC2021 09 03.93890 21 38 36.40 +02 56 16.0 18.1 GXER068G02
K21R00H KC2021 09 03.94460121 38 44.90 +02 51 18.7 18.0 VqER068J69
K21R00H KC2021 09 03.94721021 38 45.64 +02 49 06.8 18.3 VqER068J69
K21R00H KC2021 09 03.94982021 38 46.35 +02 46 54.9 18.2 VqER068J69
K21R00H KC2021 09 03.95380221 38 47.51 +02 44 14.4 19.3 GXER068958
K21R00H KC2021 09 03.95910521 38 48.88 +02 39 47.1 XER068958
K21R00H KC2021 09 03.96112021 38 49.40 +02 38 06.0 18.0 GXER068958
K21R00H KC2021 09 04.05325221 39 31.20 +01 28 35.7 17.2 GXER068Y00
K21R00H KC2021 09 04.05472221 39 31.46 +01 27 21.9 XER068Y00
K21R00H KC2021 09 04.05628521 39 31.81 +01 26 03.4 17.8 GXER068Y00
K21R00H C2021 09 04.22811 21 40 44.50 -01 05 02.8 18.0 GVER068654
K21R00H C2021 09 04.23011 21 40 44.99 -01 06 43.0 18.0 GVER068654
K21R00H C2021 09 04.27671 21 40 56.13 -01 45 36.1 18.2 GVER068654
K21R00H C2021 09 04.27871 21 40 56.60 -01 47 16.1 18.2 GVER068654
K21R00H KC2021 09 04.80025 21 44 35.77 -08 54 48.5 19.2 GVER068A17
K21R00H KC2021 09 04.80470 21 44 37.13 -08 58 22.4 17.8 GVER068A17
K21R00H KC2021 09 04.80940 21 44 38.50 -09 02 07.6 18.3 GVER068A17
K21R00H KC2021 09 04.81388 21 44 39.81 -09 05 42.4 18.5 GVER068A17
K21R00H KC2021 09 04.85376221 44 49.38 -09 37 36.8 17.9 GVER068K62
K21R00H KC2021 09 04.85614 21 44 48.41 -09 39 19.2 17.7 RoER068K88
K21R00H KC2021 09 04.85759 21 44 48.78 -09 40 28.6 17.9 RoER068K88
K21R00H KC2021 09 04.85902 21 44 49.20 -09 41 36.5 17.4 RoER068K88
K21R00H KC2021 09 04.86065521 44 51.29 -09 43 04.1 18.2 GVER068K62
K21R00H KC2021 09 04.86185 21 44 49.92 -09 43 50.8 17.7 RoER068K88
K21R00H KC2021 09 04.86295321 44 51.97 -09 44 53.7 18.3 GVER068K62
K21R00H KC2021 09 04.86525021 44 52.56 -09 46 42.5 17.7 GVER068K62
K21R00H KC2021 09 04.86548 21 44 50.85 -09 46 44.2 17.4 RoER068K88
K21R00H KC2021 09 04.86685 21 44 51.25 -09 47 48.8 17.4 RoER068K88
K21R00H KC2021 09 04.89750621 45 02.81 -10 11 46.7 19.0 GVER068K63
K21R00H KC2021 09 04.89971521 45 03.41 -10 13 30.2 18.4 GVER068K63
K21R00H KC2021 09 04.90195821 45 03.93 -10 15 17.4 18.8 GVER068K63
K21R00H KC2021 09 04.91191621 45 10.07 -10 23 33.6 17.7 VqER068J69
K21R00H 1C2021 09 04.91282 21 45 06.09 -10 24 19.3 19.3 VVER068033
K21R00H 1C2021 09 04.91310 21 45 06.17 -10 24 32.6 19.0 VVER068033
K21R00H 1C2021 09 04.91339 21 45 06.25 -10 24 46.2 18.9 VVER068033
K21R00H KC2021 09 04.91451921 45 10.76 -10 25 36.6 17.9 VqER068J69
K21R00H KC2021 09 04.91712221 45 11.41 -10 27 39.6 17.7 VqER068J69
K21R00H KC2021 09 04.91921721 45 12.62 -10 28 49.6 18.1 GXER068958
K21R00H KC2021 09 04.91972221 45 12.15 -10 29 42.5 17.8 VqER068J69
K21R00H KC2021 09 04.92232221 45 12.84 -10 31 45.8 17.7 VqER068J69
K21R00H KC2021 09 04.92400621 45 13.84 -10 32 36.0 18.2 GXER068958
K21R00H KC2021 09 04.92492621 45 13.55 -10 33 48.5 18.0 VqER068J69
K21R00H KC2021 09 04.92753021 45 14.26 -10 35 51.1 17.9 VqER068J69
K21R00H KC2021 09 04.92880221 45 15.06 -10 36 22.3 17.7 GXER068958
K21R00H KC2021 09 04.94845 21 45 12.61 -10 52 03.3 18.1 RoER068K88
K21R00H KC2021 09 04.94934 21 45 12.89 -10 52 44.2 17.9 RoER068K88
K21R00H KC2021 09 04.95113 21 45 13.36 -10 54 08.7 18.2 RoER068K88
K21R00H KC2021 09 04.95201 21 45 13.59 -10 54 50.5 18.2 RoER068K88
K21R00H KC2021 09 04.95290 21 45 13.85 -10 55 31.7 18.1 RoER068K88
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, M. D.
Grazia, T. Giovannetti. Measurers P. Bacci, L. Tesi, G. Fagioli. 0.60-m
reflector + CCD.
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
595 Farra d'Isonzo. Observers U. Montanar, E. Pettarin. Measurer E.
Pettarin. 0.61-m f/4.5 reflector + CCD.
654 Table Mountain Observatory, Wrightwood-PHMC. Observers P. Choi, N. Saini,
C. Zhai, R. Trahan, M. Shao.
958 Observatoire de Dax. Observers P. Dupouy, J. B. de Vanssay. Measurer P.
Dupouy. 0.43-m f/2.7 reflector + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6.0 Schmidt-Cassegrain + CCD.
C43 Hoyerswerda. Observer P. Lindner. 0.30-m f/6.3 Schmidt-Cassegrain + CCD.
G02 KYSUCE Observatory, Kysucke Nove Mesto. Observer M. Urbanik. 0.40-m
f/6.8 reflector + CCD.
J69 North Observatory, Clanfield. Observer D. Briggs. 0.41-m f/4.5 Newtonian
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.35-m f/5.6 Ritchey-Chretien
+ CCD.
K62 Teplice Observatory. Observer Z. Moravec. 0.43-m f/4.5 reflector + 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. Observers K. Korlevic, D. Pujagic, V. Dobos.
Measurer D. Pujagic. 1.0-m f/2.9 reflector + CCD.
Y00 SONEAR Observatory, Oliveira. Observers C. Jacques, E. Pimentel, J.
Barros. Measurer C. Jacques. 0.45-m f/2.9 reflector + CCD.
Z80 Northolt Branch Observatory. Observer G. Wells. Measurers G. Wells, D.
Bamberger. 0.25-m f/8.0 Ritchey-Chretien + CCD.
Orbital elements:
2021 RH Earth MOID = 0.0181 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 80.63429 (2000.0) P Q
n 1.05619636 Peri. 28.54244 -0.97719083 +0.19606052
a 0.9549331 Node 162.19561 -0.20652842 -0.96683795
e 0.0885342 Incl. 15.47778 +0.04943767 -0.16366019
P 0.93 H 25.83 G 0.15 U 5
Residuals in seconds of arc
210903 K88 2.2- 0.2+ 210903 K38 0.6+ 0.6- 210904 654 0.0 0.4+
210903 K88 2.2- 3.6- 210903 204 0.0 0.0 210904 A17 0.2+ 0.1-
210903 K88 (1.6- 4.5-) 210903 C43 0.8+ 0.8+ 210904 A17 0.5+ 0.6-
210903 K88 1.9- 0.4+ 210903 204 0.3+ 0.1+ 210904 A17 0.0 0.3-
210903 K88 0.5+ 0.1+ 210903 204 0.0 0.0 210904 A17 0.2- 0.2-
210903 K88 2.2- 0.5- 210903 595 0.0 0.7+ 210904 K62 0.8- 0.7-
210903 K88 2.3- 0.6- 210903 203 0.0 0.3- 210904 K88 0.1+ 0.2+
210903 K88 1.2- 2.4- 210903 104 0.3- 0.4- 210904 K88 0.1- 0.2-
210903 K88 2.1- 0.3+ 210903 203 0.0 0.1- 210904 K88 0.5+ 0.0
210903 K88 2.1- 1.8- 210903 104 0.1- 0.2- 210904 K62 0.6- 0.2+
210903 K88 0.2- 0.4+ 210903 595 0.0 0.1- 210904 K88 0.1+ 0.4+
210903 K88 1.9- 0.9- 210903 Z80 0.3+ 0.2- 210904 K62 0.2+ 0.0
210903 K88 1.4- 1.7- 210903 104 0.1- 0.2- 210904 K62 0.4- 0.5+
210903 K88 0.0 0.8+ 210903 595 0.1- 0.3+ 210904 K88 0.3- 0.3-
210903 K88 1.6- 1.7+ 210903 203 0.0 0.5- 210904 K88 0.3+ 0.2+
210903 J95 0.1+ 0.3+ 210903 Z80 0.2+ 0.1- 210904 K63 0.1- 0.5-
210903 J95 0.4- 0.1+ 210903 595 0.1+ 0.2+ 210904 K63 0.5+ 0.6+
210903 J95 0.1+ 0.4+ 210903 Z80 0.0 0.2+ 210904 K63 0.2- 0.4-
210903 J95 0.4+ 0.2+ 210903 033 0.0 0.3+ 210904 J69 0.3+ 1.3+
210903 K88 0.1- 0.4+ 210903 033 0.0 0.0 210904 033 0.2- 0.2+
210903 K88 0.1- 0.0 210903 033 0.1+ 0.6- 210904 033 0.1- 0.1+
210903 K88 0.4- 0.2+ 210903 G02 0.1- 0.9- 210904 033 0.1- 0.2+
210903 K88 0.0 0.7+ 210903 G02 0.2- 0.1- 210904 J69 0.0 1.5+
210903 K88 0.3+ 0.1+ 210903 G02 1.6- 0.6+ 210904 J69 0.8- 1.5+
210903 K88 0.1- 0.3- 210903 J69 0.6- 0.1- 210904 958 0.5- 0.3+
210903 K88 0.2+ 0.1+ 210903 J69 0.3- 0.1- 210904 J69 0.3- 1.5+
210903 K88 0.3- 0.8+ 210903 J69 0.5- 0.2- 210904 J69 0.5- 1.0+
210903 L01 0.6+ 0.7+ 210903 958 0.7+ 1.2- 210904 958 0.3- 0.2+
210903 L01 0.1+ 0.0 210903 958 0.6+ 0.6- 210904 J69 0.4- 1.3+
210903 L01 0.2+ 0.3+ 210903 958 0.5+ 0.2+ 210904 J69 0.3- 1.6+
210903 L01 0.3+ 0.3- 210904 Y00 0.8+ 1.2- 210904 958 0.2- 0.4+
210903 L01 0.1+ 0.4+ 210904 Y00 0.1- 0.8- 210904 K88 0.3- 0.3+
210903 C43 0.5- 0.1+ 210904 Y00 0.0 0.3- 210904 K88 0.3+ 0.8+
210903 K38 0.4+ 0.6+ 210904 654 0.0 0.0 210904 K88 0.2+ 0.2+
210903 C43 1.0- 0.1+ 210904 654 0.0 0.1+ 210904 K88 0.1+ 0.4-
210903 C43 0.3- 0.6+ 210904 654 0.1+ 0.4+ 210904 K88 0.4+ 0.2+
Ephemeris:
2021 RH a,e,i = 0.95, 0.09, 15 q = 0.8704
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 08 05 17 33 35.3 +82 33 18 0.1347 0.9944 77.7 94.7 24.8
...
2021 08 20 19 41 07.9 +76 46 33 0.07124 1.0125 88.5 87.5 23.2
...
2021 08 28 20 47 54.1 +62 37 48 0.03725 1.0205 105.1 72.9 21.3
...
2021 09 03 21 32 20.8 +16 01 49 0.01944 1.0257 149.8 29.6 18.6
2021 09 04 21 39 05.9 +02 11 07 0.01904 1.0264 159.6 20.0 18.3
2021 09 05 21 45 39.0 -11 25 24 0.01979 1.0272 162.3 17.3 18.3
...
2021 09 11 22 20 47.8 -55 07 45 0.03871 1.0312 128.3 50.0 20.7
...
2021 09 19 22 57 16.4 -68 18 49 0.07360 1.0353 112.8 63.5 22.5
...
2021 10 04 23 40 20.2 -72 59 15 0.1396 1.0390 102.2 70.2 24.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-R68
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