MPEC 2021-G116 : 2021 GS4
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 2021-G115
Read MPEC 2021-G117
M.P.E.C. 2021-G116 Issued 2021 April 9, 05:32 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 GS4
Observations:
K21G04S* C2021 04 06.37850011 45 19.620-03 43 59.46 22.20wUEG116F51
K21G04S C2021 04 06.39100011 45 21.581-03 43 52.06 21.93wUEG116F51
K21G04S C2021 04 06.40347311 45 23.538-03 43 44.83 22.16wUEG116F51
K21G04S |C2021 04 07.01207 11 47 19.47 -03 36 50.0 22.2 GVEG116807
K21G04S |C2021 04 07.01576 11 47 20.09 -03 36 48.2 22.2 GVEG116807
K21G04S |C2021 04 07.01947 11 47 20.70 -03 36 46.0 22.3 GVEG116807
K21G04S KC2021 04 07.14627 11 47 43.22 -03 36 54.2 22.4 RoEG116291
K21G04S KC2021 04 07.15524 11 47 44.64 -03 36 48.8 21.7 RoEG116291
K21G04S KC2021 04 07.16421 11 47 45.97 -03 36 44.9 21.9 RoEG116291
K21G04S KC2021 04 07.19762611 47 49.51 -03 36 35.1 22.3 VuEG116H21
K21G04S KC2021 04 07.20873811 47 51.27 -03 36 29.0 22.1 VuEG116H21
K21G04S ^C2021 04 07.25313211 48 02.971-03 35 41.47 21.90GVEG116568
K21G04S ^C2021 04 07.25509511 48 03.282-03 35 40.47 21.84GVEG116568
K21G04S ^C2021 04 07.25608111 48 03.432-03 35 39.94 21.83GVEG116568
K21G04S C2021 04 09.19574711 53 31.09 -03 19 33.7 22.2 GVEG116H01
K21G04S C2021 04 09.19940211 53 31.60 -03 19 31.9 22.3 GVEG116H01
K21G04S C2021 04 09.20950511 53 32.98 -03 19 27.2 22.0 GVEG116H01
K21G04S C2021 04 09.21742611 53 34.07 -03 19 23.5 22.2 GVEG116H01
Observer details:
291 LPL/Spacewatch II. Observer A. F. Tubbiolo. 1.8-m f/2.7 reflector + CCD.
568 Mauna Kea. Observers R. Wainscoat, C. Crowder, H. Flewelling. Measurers
R. Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
1.00-m f/10.0 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman. 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.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
Orbital elements:
2021 GS4 Earth MOID = 0.0270 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 328.84929 (2000.0) P Q
n 0.63534772 Peri. 280.08219 -0.63156629 -0.77513224
a 1.3400728 Node 209.10559 +0.72443697 -0.58209145
e 0.2794121 Incl. 2.02025 +0.27625189 -0.24564112
P 1.55 H 25.83 G 0.15 U 7
Residuals in seconds of arc
210406 F51 0.2- 0.0- 210407 291 0.1+ 0.1+ 210407 568 0.0+ 0.0-
210406 F51 0.1- 0.1+ 210407 291 0.1+ 0.7+ 210407 568 0.1- 0.0-
210406 F51 0.0- 0.0- 210407 291 (1.1- 0.2-) 210409 H01 0.0+ 0.1-
210407 807 0.1- 0.1+ 210407 H21 0.3+ 0.2- 210409 H01 0.1+ 0.0+
210407 807 0.3+ 0.0- 210407 H21 1.0+ 0.2- 210409 H01 0.0- 0.1+
210407 807 0.4+ 0.2+ 210407 568 0.0- 0.0+ 210409 H01 0.1- 0.1+
Ephemeris:
2021 GS4 a,e,i = 1.34, 0.28, 2 q = 0.9656
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 03 10 07 28 21.7 -13 19 59 0.04127 1.0142 119.7 58.3 21.0
...
2021 03 25 10 46 13.4 -06 55 30 0.06899 1.0611 157.1 21.5 21.2
...
2021 04 02 11 29 44.4 -04 33 47 0.09549 1.0903 161.3 17.1 21.8
...
2021 04 08 11 50 10.3 -03 28 37 0.1185 1.1137 160.6 17.4 22.3
2021 04 09 11 52 57.9 -03 20 23 0.1226 1.1177 160.3 17.6 22.4
2021 04 10 11 55 37.5 -03 12 49 0.1268 1.1218 159.9 17.8 22.5
...
2021 04 16 12 09 22.9 -02 40 05 0.1533 1.1464 157.2 19.8 23.0
...
2021 04 24 12 23 57.8 -02 24 37 0.1926 1.1802 152.7 23.0 23.7
...
2021 05 09 12 46 19.5 -02 56 14 0.2792 1.2449 143.4 28.9 24.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-G116
Read MPEC 2021-G115
Read MPEC 2021-G117
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)