MPEC 2021-D73 : 2021 DW1
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M.P.E.C. 2021-D73 Issued 2021 February 21, 08:27 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 DW1
Observations:
K21D01W* C2021 02 16.23748606 35 29.286-24 14 40.49 20.98wUED073F51
K21D01W C2021 02 16.24864906 35 28.630-24 14 34.66 20.80wUED073F51
K21D01W C2021 02 16.25981106 35 27.966-24 14 28.56 20.91wUED073F51
K21D01W ^C2021 02 17.24428406 35 45.923-24 02 23.71 20.50GVED073568
K21D01W ^C2021 02 17.24526406 35 45.867-24 02 23.10 20.47GVED073568
K21D01W ^C2021 02 18.24675906 36 11.023-23 47 49.43 20.16GVED073568
K21D01W ^C2021 02 18.24775606 36 10.975-23 47 48.47 20.37GVED073568
K21D01W ^C2021 02 18.24876306 36 10.922-23 47 47.73 20.51GVED073568
K21D01W ^C2021 02 18.24974306 36 10.869-23 47 46.91 20.50GVED073568
K21D01W |C2021 02 21.07908 06 38 12.74 -22 46 02.8 19.6 VuED073807
K21D01W |C2021 02 21.08111 06 38 12.65 -22 45 58.7 19.5 VuED073807
K21D01W |C2021 02 21.08314 06 38 12.57 -22 45 56.3 20.3 VuED073807
Observer details:
568 Mauna Kea. Observers R. Wainscoat, L. Wells, T. Burdullis. Measurers R.
Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 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.
Orbital elements:
2021 DW1 Earth MOID = 0.0031 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 304.87949 (2000.0) P Q
n 0.65191187 Peri. 8.83070 -0.98892081 -0.14379205
a 1.3172760 Node 162.77014 +0.12746031 -0.94983440
e 0.2463604 Incl. 7.15063 +0.07608880 -0.27773810
P 1.51 H 25.20 G 0.15 U 7
Residuals in seconds of arc
210216 F51 0.1+ 0.2- 210217 568 0.0- 0.0+ 210218 568 0.0+ 0.0-
210216 F51 0.1+ 0.2- 210217 568 0.0- 0.0+ 210218 568 0.0+ 0.0+
210216 F51 0.1- 0.0+ 210218 568 0.1- 0.1- 210218 568 0.0+ 0.0+
210216 F51 0.0- 0.1+ 210218 568 0.1- 0.1- 210221 807 0.3+ 0.1-
210216 F51 0.0- 0.1+ 210218 568 0.0+ 0.1+ 210221 807 0.0+ 0.6+
210217 568 0.0+ 0.0+ 210218 568 0.0+ 0.1+ 210221 807 0.2- 0.5-
210217 568 0.0+ 0.0+ 210218 568 0.0+ 0.0-
Ephemeris:
2021 DW1 a,e,i = 1.32, 0.25, 7 q = 0.9928
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 22 06 47 28.5 -23 05 57 0.1252 1.0719 132.0 43.1 22.5
...
2021 02 06 06 37 21.8 -24 52 35 0.07994 1.0324 123.6 52.7 21.7
...
2021 02 14 06 35 10.4 -24 33 15 0.05608 1.0162 119.4 57.9 21.1
...
2021 02 20 06 37 14.6 -23 12 41 0.03807 1.0066 117.1 61.0 20.3
2021 02 21 06 38 10.2 -22 48 43 0.03506 1.0052 116.8 61.4 20.1
2021 02 22 06 39 21.4 -22 19 41 0.03204 1.0039 116.7 61.7 19.9
...
2021 02 28 06 59 29.7 -14 43 17 0.01401 0.9976 120.0 59.3 18.1
...
2021 03 08 17 29 32.3 +40 53 40 0.01181 0.9927 90.2 89.1 18.7
...
2021 03 23 18 17 46.0 +29 02 51 0.05620 0.9958 87.5 89.3 22.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-D73
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