MPEC 2021-C231 : 2021 CY5
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M.P.E.C. 2021-C231 Issued 2021 February 12, 10:01 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 CY5
Observations:
K21C05Y* C2021 02 10.43596209 20 39.292-19 19 21.63 19.19GVEC231F51
K21C05Y C2021 02 10.44809309 20 27.134-19 14 19.35 VEC231F51
K21C05Y C2021 02 10.45971409 20 15.538-19 09 29.85 19.17GVEC231F51
K21C05Y KC2021 02 10.96323009 13 26.19 -15 49 12.1 19.3 GVEC231J95
K21C05Y KC2021 02 10.97144109 13 19.12 -15 46 00.5 19.3 GVEC231J95
K21C05Y mC2021 02 11.32643709 08 46.73 -13 30 42.8 19.30GVEC231I52
K21C05Y mC2021 02 11.32935609 08 44.34 -13 29 37.4 VEC231I52
K21C05Y mC2021 02 11.33226009 08 41.90 -13 28 33.0 19.16GVEC231I52
K21C05Y mC2021 02 11.33516709 08 39.49 -13 27 28.2 19.02GVEC231I52
K21C05Y KC2021 02 11.39915309 08 06.68 -12 58 00.9 19.3 GVEC231474
K21C05Y KC2021 02 11.39976909 08 06.20 -12 57 47.8 19.1 GVEC231474
K21C05Y KC2021 02 11.40038509 08 05.72 -12 57 34.2 19.3 GVEC231474
K21C05Y KC2021 02 11.40100109 08 05.23 -12 57 21.0 19.2 GVEC231474
K21C05Y KC2021 02 11.55021 09 06 12.74 -12 04 21.0 19.6 VqEC231E23
K21C05Y KC2021 02 11.56410 09 06 01.68 -11 59 23.9 qEC231E23
K21C05Y KC2021 02 11.57799 09 05 50.63 -11 54 26.6 19.6 VqEC231E23
K21C05Y KC2021 02 11.86024409 02 49.16 -10 21 27.9 19.4 GVEC231L01
K21C05Y KC2021 02 11.86283009 02 47.24 -10 20 34.2 19.8 GVEC231L01
K21C05Y KC2021 02 11.86489909 02 45.80 -10 19 52.6 19.8 GVEC231L01
K21C05Y mC2021 02 12.14080108 59 56.59 -08 46 45.2 19.32GVEC231I52
K21C05Y mC2021 02 12.14104608 59 56.51 -08 46 40.7 19.40GVEC231I52
K21C05Y mC2021 02 12.14153708 59 56.19 -08 46 31.1 19.40GVEC231I52
K21C05Y KC2021 02 12.17430608 59 32.54 -08 36 05.0 19.4 VqEC231858
K21C05Y KC2021 02 12.18020408 59 28.49 -08 34 10.8 19.2 VqEC231858
K21C05Y KC2021 02 12.18651708 59 24.13 -08 32 08.0 19.7 VqEC231858
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer T. A. Pruyne.
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. 1.0-m
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.
Orbital elements:
2021 CY5 Earth MOID = 0.0223 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 46.48323 (2000.0) P Q
n 1.24696861 Peri. 208.23479 +0.99912553 -0.01751833
a 0.8548679 Node 152.68956 +0.02904958 +0.94389751
e 0.2922199 Incl. 4.74636 -0.03007158 +0.32977356
P 0.79 H 25.85 G 0.15 U 6
Residuals in seconds of arc
210210 F51 (0.3+ 0.5-) 210211 I52 0.3- 0.3+ 210211 L01 0.4- 0.4+
210210 F51 0.1+ 0.1- 210211 474 0.2- 0.1+ 210211 L01 0.5+ 0.2-
210210 F51 0.0- 0.1+ 210211 474 0.1- 0.3- 210212 I52 (1.0- 0.2+)
210210 F51 0.0- 0.1+ 210211 474 0.2- 0.0+ 210212 I52 0.2+ 0.2-
210210 J95 0.1+ 0.6- 210211 474 0.3- 0.2- 210212 I52 0.4+ 0.1-
210210 J95 0.1+ 0.3+ 210211 E23 1.1+ 0.7+ 210212 858 0.5- 0.2+
210211 I52 0.0- 0.3- 210211 E23 0.6+ 0.4+ 210212 858 0.2- 0.0+
210211 I52 0.4+ 0.3+ 210211 E23 0.0- 0.4+ 210212 858 0.0- 0.2+
210211 I52 0.2- 0.1+ 210211 L01 0.4+ 0.8-
Ephemeris:
2021 CY5 a,e,i = 0.85, 0.29, 5 q = 0.6051
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 13 18 45 36.1 -46 42 39 0.1134 0.8844 27.3 149.3 29.2
...
2021 01 28 17 08 41.8 -59 52 58 0.05155 0.9570 56.2 121.2 24.3
...
2021 02 05 11 57 16.3 -58 02 43 0.02821 0.9906 98.7 79.7 20.9
...
2021 02 11 09 12 55.5 -15 30 49 0.03009 1.0131 149.7 29.4 19.6
2021 02 12 09 01 13.1 -09 30 52 0.03248 1.0166 154.6 24.6 19.6
2021 02 13 08 51 35.7 -04 21 37 0.03526 1.0200 157.6 21.6 19.7
...
2021 02 19 08 18 46.0 +13 52 27 0.05669 1.0393 152.9 25.7 20.9
...
2021 02 27 08 03 41.1 +23 03 32 0.09064 1.0612 139.9 37.0 22.3
...
2021 03 14 08 03 21.2 +28 28 03 0.1597 1.0902 123.4 49.6 23.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-C231
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