MPEC 2023-Q06 : 2021 PC7
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2023-Q05
Read MPEC 2023-Q07
M.P.E.C. 2023-Q06 Issued 2023 August 16, 14:08 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 PC7
Revision to MPEC 2021-P141
Additional Observations:
K21P07C C2015 07 26.59355803 46 42.258+20 29 55.53 20.68GVEQ006F51
K21P07C C2015 07 26.59878603 46 43.435+20 30 10.29 20.49GVEQ006F51
K21P07C KC2023 08 15.37276611 39 35.71 -43 57 26.8 VEQ006474
K21P07C KC2023 08 15.37748411 39 36.87 -43 57 35.3 VEQ006474
K21P07C KC2023 08 15.38220111 39 38.65 -43 57 46.1 20.4 GVEQ006474
K21P07C KC2023 08 15.38691811 39 39.96 -43 57 55.1 21.5 GVEQ006474
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.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
150726 F51 57.5- 91.7- 230815 474 5.1- 37.7- MPO646483 +0.01 days
Orbital elements:
2021 PC7 PHA, Earth MOID = 0.0028 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 152.75795 (2000.0) P Q
n 1.30346234 Peri. 145.38845 -0.76016253 -0.64585976
a 0.8299853 Node 352.97130 +0.38334202 -0.35779287
e 0.3132612 Incl. 35.37354 +0.52459682 -0.67442526
P 0.76 H 19.28 G 0.15 U 2
Residuals in seconds of arc
150726 F51 0.0 0.1+ 210810 033 0.0 0.0 210813 033 0.3+ 0.2-
150726 F51 0.1- 0.0 210810 033 0.2+ 0.1- 210813 033 0.3+ 0.1-
210808 F51 0.2- 0.1- 210810 J04 0.0 0.7+ 210818 F65 0.2- 0.1-
210808 F51 0.1- 0.1- 210810 J04 0.1- 0.2- 210818 F65 0.0 0.1+
210808 F51 0.1+ 0.1- 210810 J04 0.2+ 0.0 210818 F65 0.2+ 0.2+
210808 F51 0.0 0.1- 210811 033 0.1- 0.1- 210818 F65 0.0 0.2-
210809 033 0.2- 0.2+ 210811 033 0.3+ 0.5+ 210904 T12 0.1- 0.1-
210809 033 0.3+ 0.0 210811 033 0.2+ 0.1+ 230815 474 0.1- 0.1+
210809 568 0.1- 0.1- 210811 033 0.2- 0.1- 230815 474 (3.0- 1.0+)
210809 568 0.0 0.1- 210812 U83 1.6+ 0.8+ 230815 474 0.7+ 0.3-
210809 568 0.1- 0.1- 210812 U83 0.9+ 1.0+ 230815 474 0.6- 0.2+
210810 033 0.2- 0.2+ 210812 U83 1.0+ 0.4+
210810 033 0.0 0.4+ 210812 U83 1.7+ 1.8+
Ephemeris:
2021 PC7 a,e,i = 0.83, 0.31, 35 q = 0.5700
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 07 17 09 45 06.5 -22 40 51 0.8673 0.8528 53.1 72.4 21.2
...
2023 08 01 10 36 30.9 -34 35 12 0.8443 0.9324 59.4 69.5 21.2
...
2023 08 09 11 09 24.7 -40 05 08 0.8348 0.9689 62.3 67.9 21.2
...
2023 08 15 11 37 43.6 -43 44 46 0.8292 0.9933 64.4 66.8 21.2
2023 08 16 11 42 47.6 -44 18 42 0.8284 0.9971 64.7 66.7 21.2
2023 08 17 11 47 57.8 -44 51 48 0.8277 1.0009 65.0 66.5 21.2
...
2023 08 23 12 21 14.4 -47 51 06 0.8244 1.0217 66.7 65.4 21.2
...
2023 08 31 13 11 32.1 -50 48 48 0.8236 1.0452 68.7 64.1 21.2
...
2023 09 15 14 57 28.9 -52 21 30 0.8355 1.0761 70.8 62.0 21.3
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-Q06
Read MPEC 2023-Q05
Read MPEC 2023-Q07
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)