MPEC 2021-R97 : 2021 RB1
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M.P.E.C. 2021-R97 Issued 2021 September 6, 00:17 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 RB1
Observations:
K21R01B* C2021 09 05.20649 01 25 35.93 -18 55 17.3 16.9 RqER097Y00
K21R01B C2021 09 05.20940 01 25 28.79 -18 52 15.5 17.2 RqER097Y00
K21R01B C2021 09 05.21188 01 25 22.59 -18 49 37.8 17.1 RqER097Y00
K21R01B KC2021 09 05.22816501 24 42.24 -18 32 28.1 16.9 GXER097Y00
K21R01B KC2021 09 05.22988901 24 37.96 -18 30 38.5 16.9 GXER097Y00
K21R01B KC2021 09 05.23168701 24 33.51 -18 28 43.9 16.9 GXER097Y00
K21R01B KC2021 09 05.25580401 23 33.43 -18 03 00.7 17.3 GXER097Y00
K21R01B KC2021 09 05.25713801 23 30.11 -18 01 34.9 17.1 GXER097Y00
K21R01B KC2021 09 05.25846801 23 26.79 -18 00 09.1 17.1 GXER097Y00
K21R01B KC2021 09 05.28163701 22 29.04 -17 35 08.8 16.6 GXER097Y00
K21R01B KC2021 09 05.28297401 22 25.70 -17 33 41.9 16.7 GXER097Y00
K21R01B KC2021 09 05.28430801 22 22.36 -17 32 15.0 16.7 GXER097Y00
K21R01B C2021 09 05.48904701 14 30.87 -13 46 35.6 17.17cVER097T05
K21R01B C2021 09 05.49881601 14 05.56 -13 35 11.8 17.24cVER097T05
K21R01B C2021 09 05.50433701 13 51.25 -13 28 44.6 17.28cVER097T05
K21R01B KC2021 09 05.88231800 58 17.40 -05 42 00.8 16.5 GVER097L18
K21R01B KC2021 09 05.88301200 58 15.58 -05 41 06.6 17.4 GVER097L18
K21R01B KC2021 09 05.88371300 58 13.64 -05 40 11.2 16.2 GVER097L18
K21R01B KC2021 09 05.88835300 58 05.06 -05 33 50.7 16.4 GXER097595
K21R01B KC2021 09 05.88965800 58 01.64 -05 32 08.4 16.8 GXER097595
K21R01B KC2021 09 05.89226500 57 54.76 -05 28 45.0 16.7 GXER097595
K21R01B KC2021 09 05.89375200 57 50.82 -05 26 48.9 16.2 GXER097595
K21R01B 1C2021 09 05.90823200 57 11.52 -05 08 09.3 16.9 GVER097246
K21R01B 1C2021 09 05.90846300 57 10.89 -05 07 51.0 VER097246
K21R01B 1C2021 09 05.90857700 57 10.60 -05 07 42.4 VER097246
K21R01B 1C2021 09 05.90869400 57 10.27 -05 07 33.2 VER097246
K21R01B 1C2021 09 05.90881100 57 09.97 -05 07 23.8 VER097246
K21R01B 1C2021 09 05.90892600 57 09.67 -05 07 14.9 VER097246
K21R01B KC2021 09 05.91199 00 57 03.61 -05 02 48.4 16.2 GVER097L39
K21R01B KC2021 09 05.91290 00 57 01.23 -05 01 36.8 16.3 GVER097L39
K21R01B KC2021 09 05.91379 00 56 58.85 -05 00 25.8 16.5 GVER097L39
K21R01B KC2021 09 05.92012800 56 42.37 -04 52 40.0 16.6 VqER097J69
K21R01B KC2021 09 05.92267900 56 35.59 -04 49 19.1 16.8 VqER097J69
K21R01B KC2021 09 05.93047700 56 14.98 -04 39 05.9 16.7 VqER097J69
K21R01B KC2021 09 05.93561700 56 01.33 -04 32 20.2 16.7 VqER097J69
K21R01B KC2021 09 05.94132600 55 45.33 -04 24 26.7 16.6 GVER097203
K21R01B KC2021 09 05.94257 00 55 42.61 -04 14 58.5 16.7 GVER097L29
K21R01B KC2021 09 05.94335 00 55 40.49 -04 13 56.9 16.8 GVER097L29
K21R01B KC2021 09 05.94392900 55 38.34 -04 21 00.7 16.8 GVER097203
K21R01B KC2021 09 05.94409 00 55 38.46 -04 12 58.0 16.6 GVER097L29
K21R01B KC2021 09 05.94688600 55 30.41 -04 17 06.8 16.9 GVER097203
K21R01B KC2021 09 05.94713 00 55 26.25 -04 17 08.0 16.3 GXER097G02
K21R01B KC2021 09 05.94719 00 55 26.07 -04 17 03.5 16.3 GXER097G02
K21R01B KC2021 09 05.94998600 55 22.07 -04 13 01.7 16.4 GVER097203
K21R01B KC2021 09 05.95033 00 55 17.59 -04 12 54.7 16.2 GXER097G02
K21R01B KC2021 09 05.95174800 55 20.43 -04 10 29.7 16.9 GXER097958
K21R01B KC2021 09 05.95783600 55 04.09 -04 02 28.5 16.2 GXER097958
K21R01B KC2021 09 05.96214400 54 50.34 -03 57 23.3 17.3 GVER097Z80
K21R01B KC2021 09 05.96394200 54 47.66 -03 54 24.0 16.7 GXER097958
K21R01B KC2021 09 05.96561600 54 41.04 -03 52 47.9 17.4 GVER097Z80
K21R01B KC2021 09 05.96562300 54 43.16 -03 52 10.5 16.5 GXER097958
K21R01B KC2021 09 05.96578800 54 40.89 -03 52 34.9 16.7 GVER097J95
K21R01B KC2021 09 05.96684900 54 38.07 -03 51 10.8 16.7 GVER097J95
K21R01B KC2021 09 05.96790100 54 35.26 -03 49 47.7 16.4 GVER097J95
K21R01B KC2021 09 05.96899700 54 32.28 -03 48 20.6 16.7 GVER097J95
K21R01B KC2021 09 05.96993100 54 31.55 -03 46 28.4 16.4 GXER097958
K21R01B KC2021 09 05.97444600 54 19.37 -03 40 29.5 16.6 GXER097958
K21R01B KC2021 09 05.98117600 53 56.24 -03 31 44.6 16.8 GVER097L01
K21R01B KC2021 09 05.98203600 53 53.90 -03 30 35.9 16.9 GVER097L01
K21R01B KC2021 09 05.98289800 53 51.57 -03 29 27.5 17.0 GVER097L01
K21R01B KC2021 09 05.98387200 53 48.91 -03 28 09.8 16.9 GVER097L01
K21R01B KC2021 09 05.98484400 53 46.27 -03 26 52.3 17.0 GVER097L01
K21R01B KC2021 09 05.98570400 53 43.94 -03 25 43.8 17.0 GVER097L01
K21R01B KC2021 09 05.98656400 53 41.59 -03 24 35.1 16.9 GVER097L01
Observer details:
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + 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. Observer E. Pettarin. 0.40-m f/5.15 reflector + CCD.
958 Observatoire de Dax. Observers P. Dupouy, J. B. de Vanssay. Measurer P.
Dupouy. 0.32-m Schmidt-Cassegrain + CCD, 0.43-m f/2.7 reflector + 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.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
L18 QOS Observatory, Zalistci. Observers T. O. Dementiev, Y. V. Tanasiychuk.
Measurer A. M. Kozhukhov. 0.50-m f/3.8 reflector + CCD.
L29 Drebach-South Observatory, Windhoek. Observer J. Lorenz. 0.4-m f/3.6
reflector + CCD.
L39 Osservatorio Spica, Signa. Observer M. Bertini. 0.30-m Newtonian
reflector + CCD.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, J. Tonry, H. Weiland.
Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
N. Erasmus. 0.5-m reflector + CCD.
Y00 SONEAR Observatory, Oliveira. Observers C. Jacques, E. Pimentel, J.
Barros, P. Holvorcem. Measurer C. Jacques. 0.28-m f/2.2 astrograph +
CCD, 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 RB1 Earth MOID = 0.0174 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 314.64887 (2000.0) P Q
n 0.66436996 Peri. 5.16191 +0.97972470 +0.15293270
a 1.3007567 Node 344.15250 -0.19656635 +0.60880935
e 0.2119564 Incl. 28.29119 -0.03874501 +0.77843610
P 1.48 H 24.05 G 0.15 U 7
Residuals in seconds of arc
210905 Y00 1.3- 0.7+ 210905 246 0.4+ 0.0 210905 G02 0.3+ 0.2-
210905 Y00 0.4- 0.6- 210905 246 0.2+ 0.2+ 210905 958 0.2+ 0.4+
210905 Y00 1.3- 0.9+ 210905 246 0.3+ 0.2- 210905 958 0.1+ 0.6-
210905 Y00 0.6- 0.2+ 210905 246 0.1+ 0.2- 210905 Z80 (0.3- 1.3+)
210905 Y00 0.6- 0.2+ 210905 246 0.2+ 0.1+ 210905 958 0.3- 0.0
210905 Y00 0.3- 0.5+ 210905 246 0.3+ 0.0 210905 Z80 0.3- 1.2+
210905 Y00 0.7- 0.3+ 210905 L39 0.4- 0.2+ 210905 958 0.1+ 0.1+
210905 Y00 0.6- 0.2+ 210905 L39 0.2+ 0.3+ 210905 J95 0.4+ 0.0
210905 Y00 0.7- 0.3+ 210905 L39 (0.1+ 1.4+) 210905 J95 0.6+ 0.2-
210905 Y00 0.3+ 0.3- 210905 J69 0.9+ 1.0- 210905 J95 (0.8+ 0.6-)
210905 Y00 0.3+ 0.5- 210905 J69 0.1- 0.2- 210905 J95 0.2+ 0.6-
210905 Y00 0.1+ 0.6- 210905 J69 0.1- 0.8- 210905 958 0.2+ 0.3-
210905 T05 0.4+ 0.2- 210905 J69 0.5- 0.3- 210905 958 0.2+ 0.1+
210905 T05 0.2- 0.2+ 210905 203 0.0 0.1- 210905 L01 0.2+ 0.1-
210905 T05 0.0 0.1+ 210905 L29 0.8- 0.1- 210905 L01 0.2+ 0.1+
210905 L18 0.0 0.5- 210905 L29 0.8- 0.2+ 210905 L01 0.5+ 0.2-
210905 L18 0.3+ 0.5- 210905 203 0.0 0.2+ 210905 L01 0.4+ 0.2-
210905 L18 0.9- 0.2+ 210905 L29 (1.0- 0.5+) 210905 L01 0.5+ 0.1-
210905 595 0.8- 0.2- 210905 203 0.2+ 0.3+ 210905 L01 0.6+ 0.2-
210905 595 0.5- 0.2+ 210905 G02 1.0+ 0.5- 210905 L01 0.5+ 0.1-
210905 595 0.4- 0.1- 210905 G02 0.6+ 0.5-
210905 595 0.6- 0.2- 210905 203 0.2+ 0.1+
Ephemeris:
2021 RB1 a,e,i = 1.30, 0.21, 28 q = 1.0251
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 08 07 04 53 05.9 -62 16 52 0.2607 1.0605 93.1 72.7 23.8
...
2021 08 22 04 30 36.1 -60 02 30 0.1373 1.0371 97.0 75.5 22.5
...
2021 08 30 03 41 39.0 -55 00 39 0.06888 1.0295 104.8 71.5 20.8
...
2021 09 05 01 33 22.9 -22 23 29 0.02361 1.0262 138.9 40.3 17.6
2021 09 06 00 53 01.9 -03 02 24 0.02024 1.0259 151.3 28.2 16.9
2021 09 07 00 07 17.4 +19 30 03 0.02050 1.0256 149.7 29.7 17.0
...
2021 09 13 20 25 43.8 +61 37 54 0.06158 1.0251 106.1 70.5 20.5
...
2021 09 21 19 02 15.6 +63 41 50 0.1298 1.0277 96.9 75.9 22.3
...
2021 10 06 18 29 56.2 +63 29 10 0.2534 1.0426 92.6 73.3 23.7
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-R97
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