MPEC 2021-N17 : 2021 MC2
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M.P.E.C. 2021-N17 Issued 2021 July 3, 17:07 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 MC2
Observations:
K21M02C* C2021 06 28.30062317 06 09.319+06 16 34.63 21.97wUEN017F51
K21M02C C2021 06 28.30999917 06 07.427+06 16 51.87 22.17wUEN017F51
K21M02C C2021 06 28.31938517 06 05.534+06 17 09.03 22.00wUEN017F51
K21M02C C2021 06 28.32872717 06 03.641+06 17 26.33 21.84wUEN017F51
K21M02C C2021 06 28.48636217 05 31.721+06 22 15.23 22.83GVEN017F51
K21M02C C2021 06 28.48701217 05 31.586+06 22 15.99 21.82GVEN017F51
K21M02C KC2021 06 29.16359117 03 17.46 +06 42 47.9 21.8 VuEN017H21
K21M02C KC2021 06 29.17041817 03 16.06 +06 43 00.1 22.1 VuEN017H21
K21M02C C2021 06 29.31320617 02 47.789+06 47 22.19 21.65GVEN017F51
K21M02C C2021 06 29.32573617 02 45.247+06 47 44.91 21.89GVEN017F51
K21M02C C2021 06 29.33832817 02 42.689+06 48 07.85 22.04GVEN017F51
K21M02C C2021 06 29.35155017 02 40.009+06 48 31.79 22.03GVEN017F51
K21M02C ^C2021 07 03.46672616 49 00.398+08 49 26.04 21.87GVEN017568
K21M02C ^C2021 07 03.46770116 49 00.202+08 49 27.70 21.83GVEN017568
K21M02C ^C2021 07 03.46868516 49 00.003+08 49 29.34 21.89GVEN017568
Observer details:
568 Mauna Kea. Observers R. Wainscoat, H. Januszewski, T. Burdullis.
Measurers R. Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope +
CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman, K. Chambers, I. Smith. Measurers K. Chambers, S. Chastel, T. de
Boer, L. Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E.
Magnier, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 1.3-m f/4.0 astrograph + CCD.
Orbital elements:
2021 MC2 Earth MOID = 0.5200 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 319.64980 (2000.0) P Q
n 0.37392674 Peri. 154.79571 +0.40108441 -0.37519803
a 1.9081464 Node 258.28040 +0.62689823 +0.77760597
e 0.7708908 Incl. 58.59111 +0.66792957 -0.50453482
P 2.64 H 20.08 G 0.15 U 9
Residuals in seconds of arc
210628 F51 0.1- 0.0 210628 F51 0.2- 0.2- 210629 F51 0.1- 0.0
210628 F51 0.0 0.0 210629 H21 0.6+ 0.2+ 210629 F51 0.0 0.0
210628 F51 0.1+ 0.1- 210629 H21 0.3+ 0.1- 210703 568 0.0 0.0
210628 F51 0.0 0.1+ 210629 F51 0.0 0.0 210703 568 0.0 0.0
210628 F51 0.1- 0.3+ 210629 F51 0.0 0.0 210703 568 0.0 0.0
Ephemeris:
2021 MC2 a,e,i = 1.91, 0.77, 59 q = 0.4372
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 06 03 18 18 09.5 -06 31 19 1.1152 2.0677 152.3 13.2 22.7
...
2021 06 18 17 39 06.3 +00 52 37 0.9588 1.9305 155.7 12.5 22.2
...
2021 06 26 17 13 44.5 +05 05 30 0.9140 1.8531 147.4 17.2 22.1
...
2021 07 02 16 53 52.4 +08 07 13 0.8979 1.7929 138.8 21.9 22.2
2021 07 03 16 50 33.6 +08 36 07 0.8966 1.7827 137.3 22.7 22.2
2021 07 04 16 47 15.4 +09 04 32 0.8957 1.7724 135.8 23.6 22.2
...
2021 07 10 16 27 52.3 +11 43 18 0.8973 1.7097 126.5 28.6 22.3
...
2021 07 18 16 04 06.8 +14 39 25 0.9151 1.6230 114.2 34.8 22.4
...
2021 08 02 15 29 00.0 +18 25 49 0.9741 1.4500 93.6 44.3 22.5
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-N17
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