MPEC 2021-N12 : 2021 ND
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M.P.E.C. 2021-N12 Issued 2021 July 2, 23:51 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 ND
Observations:
K21N00D* C2021 07 01.37621916 52 06.999-04 35 18.59 21.21wUEN012F51
K21N00D C2021 07 01.38855816 52 09.370-04 33 30.43 21.04wUEN012F51
K21N00D C2021 07 01.40089616 52 11.784-04 31 41.90 21.16wUEN012F51
K21N00D C2021 07 01.41318316 52 14.172-04 29 54.27 21.26wUEN012F51
K21N00D C2021 07 01.50269016 52 32.096-04 16 46.53 21.40GVEN012F51
K21N00D C2021 07 01.50334816 52 32.236-04 16 40.77 20.63GVEN012F51
K21N00D KC2021 07 01.55460016 52 45.77 -04 07 39.4 21.8 GVEN012474
K21N00D KC2021 07 01.55958816 52 46.73 -04 06 55.4 20.5 GVEN012474
K21N00D KC2021 07 01.56198416 52 47.26 -04 06 33.2 21.1 GVEN012474
K21N00D KC2021 07 02.13645816 55 04.68 -02 43 06.4 21.0 VuEN012H21
K21N00D KC2021 07 02.14380716 55 06.21 -02 42 00.2 21.4 VuEN012H21
K21N00D KC2021 07 02.14821616 55 07.15 -02 41 20.8 21.1 VuEN012H21
K21N00D KC2021 07 02.88432316 58 05.07 -00 49 09.8 21.3 VZEN012B37
K21N00D 1C2021 07 02.89746 16 58 07.24 -00 47 17.0 21.4 VVEN012033
K21N00D 1C2021 07 02.89907 16 58 07.61 -00 47 02.3 21.2 VVEN012033
K21N00D 1C2021 07 02.90068 16 58 07.99 -00 46 47.5 21.3 VVEN012033
K21N00D KC2021 07 02.90110516 58 08.75 -00 46 34.1 20.8 VZEN012B37
K21N00D KC2021 07 02.90122116 58 08.81 -00 46 32.9 20.7 VZEN012B37
K21N00D 1C2021 07 02.90230 16 58 08.36 -00 46 32.5 20.9 VVEN012033
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.
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.
B37 Obs. de L Ametlla del Valles, Barcelona. Observer A. Garrigos. 0.51-m
f/4.0 reflector + 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. 0.81-m f/4.0 astrograph + CCD.
Orbital elements:
2021 ND Earth MOID = 0.0859 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 353.35151 (2000.0) P Q
n 0.29867319 Peri. 36.76774 +0.56849538 +0.80125397
a 2.2165212 Node 268.61302 -0.79224299 +0.47207693
e 0.5219969 Incl. 10.75536 -0.22172967 +0.36760773
P 3.30 H 24.67 G 0.15 U 8
Residuals in seconds of arc
210701 F51 0.1+ 0.2- 210701 474 0.7- 0.4- 210702 033 0.2+ 0.3+
210701 F51 0.1- 0.1- 210701 474 0.2- 0.6+ 210702 033 0.5+ 0.1+
210701 F51 0.2+ 0.3+ 210702 H21 0.2+ 0.1+ 210702 B37 0.1- 0.3-
210701 F51 0.1+ 0.1+ 210702 H21 0.2+ 0.0 210702 B37 (0.5+ 0.2-)
210701 F51 0.1- 0.1- 210702 H21 0.5+ 0.3- 210702 033 0.7+ 0.1+
210701 F51 0.1- 0.1- 210702 B37 (0.3- 0.4-)
210701 474 0.5+ 0.3- 210702 033 0.0 0.5+
Ephemeris:
2021 ND a,e,i = 2.22, 0.52, 11 q = 1.0595
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 06 02 16 03 26.0 -39 00 40 0.2380 1.2421 161.5 15.0 22.9
...
2021 06 17 16 15 44.7 -28 56 57 0.1547 1.1625 160.0 17.4 21.9
...
2021 06 25 16 31 52.0 -17 54 00 0.1209 1.1275 155.4 22.1 21.4
...
2021 07 01 16 50 42.8 -05 29 14 0.1026 1.1053 148.4 28.8 21.2
2021 07 02 16 54 31.4 -03 02 42 0.1003 1.1020 146.8 30.3 21.2
2021 07 03 16 58 32.4 -00 30 23 0.09821 1.0988 145.2 31.9 21.2
...
2021 07 09 17 27 18.9 +16 04 43 0.09164 1.0820 133.7 42.8 21.3
...
2021 07 17 18 18 47.1 +36 50 53 0.09831 1.0667 118.4 56.9 21.8
...
2021 08 01 20 19 04.2 +56 16 34 0.1403 1.0610 105.4 67.2 22.9
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-N12
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