MPEC 2021-D51 : 2021 DD1
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M.P.E.C. 2021-D51 Issued 2021 February 19, 10:11 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 DD1
Observations:
K21D01D* C2021 02 18.36537310 21 48.25 +27 37 40.5 20.13GVED051G96
K21D01D C2021 02 18.37053510 21 51.92 +27 35 15.4 20.28GVED051G96
K21D01D C2021 02 18.37569810 21 55.59 +27 32 47.5 19.75GVED051G96
K21D01D KC2021 02 18.46003110 22 58.44 +26 51 34.5 19.67GVED051I52
K21D01D KC2021 02 18.46116410 22 59.31 +26 51 00.5 19.69GVED051I52
K21D01D KC2021 02 18.46229410 23 00.22 +26 50 27.3 19.54GVED051I52
K21D01D KC2021 02 18.46343010 23 01.12 +26 49 52.5 19.67GVED051I52
K21D01D KC2021 02 18.92200410 31 03.33 +22 36 33.0 19.6 GVED051J95
K21D01D KC2021 02 18.92495010 31 06.04 +22 34 45.2 18.9 GVED051J95
K21D01D KC2021 02 18.92825910 31 09.20 +22 32 45.5 19.3 GVED051J95
K21D01D KC2021 02 18.93545810 31 16.02 +22 28 22.4 19.4 GVED051J95
K21D01D KC2021 02 18.97949610 31 56.48 +22 00 56.4 19.6 GVED051Z99
K21D01D KC2021 02 18.98165110 31 58.52 +21 59 35.1 19.9 GVED051Z99
K21D01D KC2021 02 18.98385110 32 00.64 +21 58 12.3 19.7 GVED051Z99
K21D01D KC2021 02 19.12507210 34 52.90 +20 26 53.6 19.7 VuED051H21
K21D01D KC2021 02 19.12711310 34 54.99 +20 25 32.2 19.4 VuED051H21
K21D01D KC2021 02 19.12921810 34 57.13 +20 24 07.5 18.7 VuED051H21
K21D01D KC2021 02 19.21459210 36 31.82 +19 25 53.9 19.7 VqED051858
K21D01D KC2021 02 19.21785610 36 35.16 +19 23 36.6 19.4 VqED051858
K21D01D KC2021 02 19.22111610 36 38.45 +19 21 19.7 19.8 VqED051858
Observer details:
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observer T. A. Pruyne. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. Rankin. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector +
CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
Z99 Clixby Observatory, Cleethorpes. Observer A. Mickleburgh. 0.36-m f/8
Schmidt-Cassegrain + CCD.
Orbital elements:
2021 DD1 Earth MOID = 0.0088 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 318.24323 (2000.0) P Q
n 0.45637539 Peri. 212.25886 -0.99434627 +0.07123580
a 1.6707876 Node 331.50828 -0.01932801 -0.85061694
e 0.4280534 Incl. 9.50161 -0.10441229 -0.52093789
P 2.16 H 27.74 G 0.15 U 7
Residuals in seconds of arc
210218 G96 0.1+ 0.1- 210218 J95 0.4+ 0.2+ 210219 H21 0.1- 0.5+
210218 G96 (0.0- 1.2+) 210218 J95 0.6- 0.7- 210219 H21 0.0- 0.6+
210218 G96 0.1- 0.2+ 210218 J95 0.1- 0.0- 210219 H21 0.1- 0.1+
210218 I52 0.1+ 0.4- 210218 J95 0.4+ 0.4- 210219 858 0.1- 0.0-
210218 I52 0.2- 0.2- 210218 Z99 0.5- 0.4+ 210219 858 0.4+ 0.3-
210218 I52 0.1+ 0.6+ 210218 Z99 0.4- 0.1+ 210219 858 0.2+ 0.1-
210218 I52 0.2+ 0.1+ 210218 Z99 0.2+ 0.2+
Ephemeris:
2021 DD1 a,e,i = 1.67, 0.43, 10 q = 0.9556
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 20 09 07 53.5 +49 55 47 0.1876 1.1473 148.0 27.1 25.6
...
2021 02 04 09 19 41.2 +50 02 11 0.09772 1.0684 146.2 30.9 24.2
...
2021 02 12 09 36 02.8 +46 15 42 0.05321 1.0324 147.5 30.9 22.8
...
2021 02 18 10 16 50.6 +30 15 33 0.02197 1.0091 161.3 18.3 20.4
2021 02 19 10 32 11.6 +21 52 56 0.01746 1.0056 168.2 11.6 19.7
2021 02 20 10 53 43.7 +08 09 55 0.01367 1.0022 169.6 10.2 19.1
...
2021 02 26 17 44 31.5 -69 49 50 0.02701 0.9838 75.9 102.6 23.6
...
2021 03 06 20 05 22.8 -62 53 57 0.06881 0.9659 65.8 110.4 26.0
...
2021 03 21 20 45 36.1 -58 01 28 0.1470 0.9551 69.7 102.0 27.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-D51
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