MPEC 2022-O03 : 2021 DK
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M.P.E.C. 2022-O03 Issued 2022 July 16, 14:02 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 DK
Revision to MPEC 2021-D31
Additional Observations:
K21D00K C2022 06 29.30927017 36 55.967-05 53 32.94 23.31GVEO003T12
K21D00K C2022 06 29.31440717 36 55.231-05 53 32.02 23.32GVEO003T12
K21D00K C2022 07 04.44544917 24 56.486-05 41 16.01 23.07GVEO003T12
K21D00K C2022 07 04.45264017 24 55.457-05 41 15.19 23.23GVEO003T12
K21D00K C2022 07 04.46856917 24 53.164-05 41 13.48 23.37GVEO003T12
Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m). Observers D. Hung, D. J.
Tholen. Measurer D. J. Tholen. 2.24-m f/10.1 reflector + 2112 x 2112
pixels STA1600 10k CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
220629 T12 46.4+ 6.6+ 220704 T12 44.3+ 7.2+ MPO624186 +0.03 days
Orbital elements:
2021 DK Earth MOID = 0.0745 AU
Epoch 2022 Aug. 9.0 TT = JDT 2459800.5 Veres
M 309.29969 (2000.0) P Q
n 0.51860425 Peri. 230.66245 +0.61449283 -0.78891502
a 1.5343061 Node 181.43560 +0.75926597 +0.59256355
e 0.6281547 Incl. 7.83436 +0.21427493 +0.16273151
P 1.90 H 21.36 G 0.15 U 2
Residuals in seconds of arc
210216 T05 0.4+ 0.6+ 210220 474 0.2+ 0.1+ 210307 G96 0.2+ 0.3-
210216 T05 0.7- 0.4+ 210220 474 0.0 0.0 210307 G96 0.1- 0.4+
210216 T05 0.1+ 0.3+ 210222 I52 0.5+ 0.4- 210307 G96 0.0 0.1+
210216 T05 0.6+ 0.2- 210222 I52 0.6+ 0.6- 210310 I52 0.2- 0.2-
210217 I52 0.5- 0.2- 210222 I52 0.3- 0.5- 210310 I52 (1.2- 0.2-)
210217 I52 (0.6+ 1.0-) 210222 I52 (0.6+ 1.6-) 210310 I52 0.0 0.3+
210217 I52 0.0 0.1+ 210222 T08 0.0 0.4+ 210312 D29 0.0 0.5+
210217 I52 0.5- 1.1+ 210222 T08 0.3+ 0.1- 210312 D29 0.2+ 0.1-
210217 474 0.0 0.4- 210222 T08 0.2- 0.7+ 210312 D29 0.1- 0.1+
210217 474 0.2+ 0.1- 210222 T08 0.2- 0.6+ 210313 D29 0.4- 0.2-
210217 474 0.2+ 0.1- 210223 I52 0.1- 0.3- 210313 D29 0.4- 0.2-
210217 474 0.0 0.1- 210223 I52 0.1- 0.2- 210315 691 0.0 0.6+
210217 221 0.0 0.3+ 210223 I52 0.2- 0.2+ 210315 691 0.1- 0.4+
210217 221 0.0 0.4+ 210223 I52 0.1- 0.2+ 210315 691 0.2+ 0.2+
210217 221 0.4+ 0.2+ 210225 204 0.2- 0.1- 210315 F52 0.2+ 0.0
210217 221 0.3+ 0.1- 210225 204 0.0 0.0 210315 F52 0.1+ 0.1+
210217 221 0.2+ 0.3+ 210225 I52 0.2+ 0.0 210315 F52 0.0 0.1-
210217 221 0.3+ 0.1+ 210225 I52 0.5- 0.3- 210315 F52 0.0 0.0
210217 221 0.4+ 0.3- 210225 I52 0.1+ 0.1- 210323 807 0.0 0.5-
210217 221 0.1- 0.5+ 210226 I52 0.4+ 0.3- 210323 807 0.0 0.1-
210218 221 0.1+ 0.0 210226 I52 0.4+ 0.1- 210323 807 0.2- 0.5-
210218 474 0.2+ 0.1- 210226 I52 0.3- 0.1+ 210323 I52 0.1+ 0.1+
210218 474 0.0 0.3- 210303 807 0.5- 0.2+ 210323 I52 0.2+ 0.0
210218 474 0.1+ 0.0 210303 807 0.6- 0.2+ 210323 I52 0.3+ 0.4-
210218 474 0.1+ 0.0 210303 807 0.4- 0.2+ 210402 H21 0.0 0.1+
210219 474 0.2+ 0.1- 210304 D29 0.1+ 0.1- 210402 H21 0.2+ 0.4-
210219 474 0.3+ 0.0 210304 D29 0.2+ 0.1+ 210409 F51 0.2+ 0.1-
210219 474 0.1+ 0.0 210304 D29 0.0 0.3+ 210409 F51 0.0 0.2-
210219 474 0.1+ 0.1+ 210306 K87 1.2+ 0.4- 210409 F51 0.1- 0.0
210220 I52 0.2- 0.6- 210306 K87 1.3+ 0.0 220629 T12 0.0 0.0
210220 I52 0.5- 0.0 210306 K87 0.9- 0.3+ 220629 T12 0.0 0.0
210220 I52 0.0 0.1- 210307 K87 0.1- 0.8+ 220704 T12 0.0 0.0
210220 I52 0.2- 0.1- 210307 K87 0.4+ 0.7+ 220704 T12 0.1+ 0.0
210220 474 0.1+ 0.1- 210307 K87 1.0+ 0.2+ 220704 T12 0.0 0.0
210220 474 0.2+ 0.1- 210307 G96 0.1- 0.1+
Ephemeris:
2021 DK a,e,i = 1.53, 0.63, 8 q = 0.5705
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2022 06 16 18 05 50.3 -06 51 13 0.9039 1.8963 162.1 9.5 23.2
...
2022 07 01 17 32 59.7 -05 48 44 0.8144 1.7934 156.5 13.0 22.9
...
2022 07 09 17 14 25.9 -05 35 50 0.7906 1.7344 147.1 18.6 23.0
...
2022 07 15 17 01 12.4 -05 37 04 0.7821 1.6883 139.3 23.1 23.1
2022 07 16 16 59 06.4 -05 38 12 0.7814 1.6805 138.0 23.9 23.1
2022 07 17 16 57 02.4 -05 39 34 0.7809 1.6726 136.7 24.6 23.1
...
2022 07 23 16 45 30.3 -05 53 15 0.7811 1.6242 128.9 29.1 23.2
...
2022 07 31 16 32 50.2 -06 25 03 0.7883 1.5570 118.8 34.8 23.2
...
2022 08 15 16 18 29.4 -07 58 52 0.8107 1.4225 102.0 44.2 23.4
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