MPEC 2021-R208 : 2021 RR5
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M.P.E.C. 2021-R208 Issued 2021 September 11, 02:19 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 RR5
Observations:
K21R05R* C2021 09 08.18221221 45 23.47 +11 31 33.2 21.03GVER208G96
K21R05R C2021 09 08.18747721 45 22.80 +11 31 40.4 21.43GVER208G96
K21R05R C2021 09 08.19276621 45 22.20 +11 31 46.6 21.23GVER208G96
K21R05R C2021 09 08.19804021 45 21.63 +11 31 53.6 VER208G96
K21R05R C2021 09 10.26418221 46 50.723+12 43 18.54 19.91wUER208F52
K21R05R C2021 09 10.27506721 46 49.005+12 44 05.19 19.92wUER208F52
K21R05R C2021 09 10.28595621 46 47.143+12 44 51.63 19.73wUER208F52
K21R05R C2021 09 10.43131621 46 15.183+12 54 42.54 19.75GVER208F51
K21R05R C2021 09 10.43196321 46 15.038+12 54 45.08 19.48GVER208F51
K21R05R 1C2021 09 10.79237 21 47 33.21 +13 17 08.4 19.4 VVER208033
K21R05R 1C2021 09 10.79265 21 47 33.19 +13 17 10.1 20.3 VVER208033
K21R05R 1C2021 09 10.79295 21 47 33.18 +13 17 11.9 20.0 VVER208033
K21R05R 1C2021 09 10.80261821 47 31.97 +13 18 43.0 VER208246
K21R05R 1C2021 09 10.80352221 47 31.90 +13 18 48.8 VER208246
K21R05R 1C2021 09 10.80374821 47 31.89 +13 18 50.7 VER208246
K21R05R 1C2021 09 10.80397321 47 31.86 +13 18 52.1 VER208246
K21R05R KC2021 09 10.81159721 47 32.98 +13 20 25.4 18.9 GXER208L01
K21R05R KC2021 09 10.81517921 47 32.55 +13 20 47.8 19.2 GXER208L01
K21R05R KC2021 09 10.81875421 47 32.11 +13 21 10.8 19.2 GXER208L01
K21R05R KC2021 09 10.92035 21 47 27.87 +13 32 12.0 19.2 GVER208I93
K21R05R KC2021 09 10.92471 21 47 27.11 +13 32 41.3 18.8 GVER208I93
K21R05R KC2021 09 10.92907 21 47 26.37 +13 33 10.4 19.2 GVER208I93
K21R05R KC2021 09 10.93584 21 47 10.56 +13 32 38.6 18.9 GXER208G02
K21R05R KC2021 09 10.94277 21 47 09.60 +13 33 22.7 19.1 GXER208G02
K21R05R KC2021 09 10.94971 21 47 08.67 +13 34 06.6 19.2 GXER208G02
K21R05R KC2021 09 10.99421 21 47 06.07 +13 40 20.7 VER208104
K21R05R KC2021 09 10.99711 21 47 05.65 +13 40 39.6 19.3 GVER208104
K21R05R KC2021 09 11.00583 21 47 04.44 +13 41 36.9 19.1 GVER208104
K21R05R KC2021 09 11.02580 21 48 22.50 +13 45 48.1 19.0 GXER208W34
K21R05R KC2021 09 11.03141 21 48 22.10 +13 46 35.2 18.6 GXER208W34
K21R05R KC2021 09 11.03832 21 48 21.51 +13 47 33.5 18.9 GXER208W34
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.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, I. Smith. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, I.
Smith. Measurers K. Chambers, S. Chastel, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
G02 KYSUCE Observatory, Kysucke Nove Mesto. Observer M. Urbanik.
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.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/3.7 reflector + CCD.
L01 Visnjan Observatory, Tican. Observers V. Dobos, F. Hrzenjak, I. Lyon, E.
Pettarin, D. Pujagic. Measurer D. Pujagic. 1.0-m f/2.9 reflector + CCD.
W34 Squirrel Valley Observatory, Columbus. Observer R. L. Flynn. 0.36-m
f/1.9 Schmidt-Cassegrain + CCD.
Orbital elements:
2021 RR5 Earth MOID = 0.0007 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Bell
M 285.06041 (2000.0) P Q
n 0.64235592 Peri. 238.36876 +0.66123954 -0.74998235
a 1.3303081 Node 170.18155 +0.71760517 +0.62576677
e 0.3344260 Incl. 5.71896 +0.21864377 +0.21434186
P 1.53 H 28.38 G 0.15 U 6
Residuals in seconds of arc
210908 G96 0.0 0.0 210910 033 0.1+ 0.2- 210910 G02 0.6- 0.2-
210908 G96 0.7- 0.4+ 210910 246 0.5- 0.5+ 210910 G02 0.3- 0.0
210908 G96 0.4- 0.3- 210910 246 0.3- 0.7+ 210910 G02 0.0 0.2-
210908 G96 0.6+ 0.1- 210910 246 0.1- 1.2+ 210910 104 0.2- 0.1+
210910 F52 0.1+ 0.1- 210910 246 0.3- 1.1+ 210910 104 0.2- 0.0
210910 F52 0.0 0.1+ 210910 L01 0.1+ 0.3+ 210911 104 0.1- 0.2+
210910 F52 0.1- 0.1+ 210910 L01 0.0 0.1- 210911 W34 0.3+ 0.0
210910 F51 0.0 0.2- 210910 L01 0.1- 0.2+ 210911 W34 0.1+ 0.3-
210910 F51 0.0 0.1- 210910 I93 0.1+ 0.2- 210911 W34 (0.3- 0.6-)
210910 033 0.0 0.0 210910 I93 0.0 0.0
210910 033 0.1- 0.1- 210910 I93 0.2+ 0.1-
Ephemeris:
2021 RR5 a,e,i = 1.33, 0.33, 6 q = 0.8854
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 08 12 21 48 08.1 +08 13 02 0.1649 1.1661 156.1 20.6 25.8
...
2021 08 27 21 46 10.4 +09 58 38 0.08294 1.0877 157.9 20.4 24.2
...
2021 09 04 21 45 06.2 +10 46 52 0.04273 1.0476 155.5 23.5 22.7
...
2021 09 10 21 46 05.9 +12 30 37 0.01339 1.0189 152.2 27.5 20.3
2021 09 11 21 47 33.7 +13 49 59 0.0085341.0143 151.2 28.6 19.3
2021 09 12 21 53 18.3 +18 37 01 0.0036811.0097 148.7 31.2 17.6
...
2021 09 18 09 50 48.8 -16 19 01 0.02567 0.9834 32.9 146.3 28.2
...
2021 09 26 09 53 55.7 -16 42 57 0.06509 0.9515 37.0 140.6 29.3
...
2021 10 11 10 05 25.0 -16 06 58 0.1421 0.9032 44.8 128.8 29.5
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-R208
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