MPEC 2021-M03 : 2021 LD7
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M.P.E.C. 2021-M03 Issued 2021 June 16, 11:25 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 LD7
Observations:
K21L07D* C2021 06 12.38979 20 23 55.95 +03 15 43.5 19.6 GVEM003U68
K21L07D C2021 06 12.39313 20 23 59.63 +03 15 50.2 19.6 GVEM003U68
K21L07D C2021 06 12.41163 20 24 20.03 +03 16 29.1 20.0 GVEM003U68
K21L07D C2021 06 12.41497 20 24 23.66 +03 16 36.1 20.0 GVEM003U68
K21L07D C2021 06 14.35251 21 02 44.51 +04 22 34.9 19.6 GVEM003U68
K21L07D C2021 06 14.35543 21 02 47.96 +04 22 40.7 19.6 GVEM003U68
K21L07D C2021 06 14.41641 21 04 00.84 +04 24 42.1 19.5 GVEM003U68
K21L07D C2021 06 14.41932 21 04 04.30 +04 24 47.6 19.5 GVEM003U68
K21L07D KC2021 06 15.40661521 24 28.64 +04 56 08.5 19.93GVEM003I52
K21L07D KC2021 06 15.40736121 24 29.55 +04 56 09.6 20.14GVEM003I52
K21L07D KC2021 06 15.40810421 24 30.46 +04 56 11.2 19.55GVEM003I52
K21L07D hC2021 06 15.95057821 35 51.43 +05 11 48.6 20.1 GVEM003L01
K21L07D hC2021 06 15.96927521 36 14.58 +05 12 21.8 19.5 GVEM003L01
K21L07D hC2021 06 15.97018421 36 15.68 +05 12 24.2 19.8 GVEM003L01
K21L07D KC2021 06 15.98860521 36 38.53 +05 12 44.7 19.9 GVEM003J95
K21L07D KC2021 06 15.99494621 36 46.36 +05 12 56.4 19.4 GVEM003J95
K21L07D KC2021 06 16.00118421 36 54.08 +05 13 06.9 20.0 GVEM003J95
K21L07D KC2021 06 16.00656421 37 00.72 +05 13 16.5 19.6 GVEM003J95
K21L07D KC2021 06 16.30609721 43 15.05 +05 22 03.5 19.9 VuEM003H21
K21L07D KC2021 06 16.30889521 43 18.46 +05 22 08.3 19.7 VuEM003H21
K21L07D KC2021 06 16.31169321 43 21.86 +05 22 13.1 19.7 VuEM003H21
K21L07D KC2021 06 16.31449321 43 25.29 +05 22 17.7 19.7 VuEM003H21
K21L07D KC2021 06 16.31729121 43 28.69 +05 22 22.8 20.0 VuEM003H21
K21L07D KC2021 06 16.34593121 44 05.97 +05 23 20.8 VEM003I52
K21L07D KC2021 06 16.34761221 44 08.00 +05 23 23.9 19.36GVEM003I52
K21L07D KC2021 06 16.34929221 44 10.06 +05 23 26.7 19.61GVEM003I52
Observer details:
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. C. Fuls. 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.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
U68 JPL SynTrack Robotic Telescope, Auberry. Observers N. Saini, C. Zhai, R.
Trahan, M. Zhan, M. Shao. 0.28-m f/2.2 Schmidt + CCD.
Orbital elements:
2021 LD7 Earth MOID = 0.0075 AU
Epoch 2021 July 5.0 TT = JDT 2459400.5 Veres
M 358.04122 (2000.0) P Q
n 0.26853872 Peri. 195.14056 +0.49853552 +0.86376534
a 2.3793853 Node 104.81064 -0.78725312 +0.48652178
e 0.5838038 Incl. 4.34783 -0.36289786 +0.13117165
P 3.67 H 23.43 G 0.15 U 9
Residuals in seconds of arc
210612 U68 0.3- 0.2+ 210615 I52 0.1- 0.2- 210616 H21 0.1+ 0.0
210612 U68 0.2- 0.2- 210615 I52 0.2+ 0.0 210616 H21 0.1+ 0.1+
210612 U68 0.6+ 0.1- 210615 L01 0.4- 0.1- 210616 H21 0.1- 0.2+
210612 U68 0.1- 0.1- 210615 L01 0.8+ 0.0 210616 H21 0.2+ 0.0
210614 U68 0.2+ 0.3+ 210615 L01 0.5+ 0.8+ 210616 H21 0.0 0.4+
210614 U68 0.5- 0.2+ 210615 J95 0.1+ 0.3- 210616 I52 0.2+ 0.2-
210614 U68 0.3+ 0.2+ 210615 J95 0.1- 0.2+ 210616 I52 0.2- 0.1+
210614 U68 0.2+ 0.1- 210616 J95 0.1- 0.3- 210616 I52 0.0 0.0
210615 I52 0.2- 0.1+ 210616 J95 0.1- 0.1-
Ephemeris:
2021 LD7 a,e,i = 2.38, 0.58, 4 q = 0.9903
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 05 17 16 53 19.5 -05 25 22 0.2275 1.2231 156.4 19.3 21.6
...
2021 06 01 17 59 48.5 -02 00 11 0.1251 1.1254 151.3 25.6 20.3
...
2021 06 09 19 26 11.6 +01 21 59 0.08607 1.0812 138.6 38.4 19.8
...
2021 06 15 21 15 58.6 +04 44 29 0.07257 1.0528 118.9 57.7 19.9
2021 06 16 21 36 47.2 +05 14 35 0.07224 1.0485 115.0 61.4 20.0
2021 06 17 21 57 34.7 +05 41 34 0.07251 1.0443 111.1 65.1 20.1
...
2021 06 23 23 46 57.0 +07 07 15 0.08505 1.0223 91.6 83.6 21.1
...
2021 07 01 01 14 05.0 +07 06 33 0.1195 1.0014 79.3 93.9 22.2
...
2021 07 16 02 25 48.8 +06 38 36 0.1983 0.9915 77.2 91.6 23.1
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-M03
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