2021 DK

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6281312179 ± 4.64e-08
Semi-major axis (a)1.5345947055 AU ± 2.83e-08
Inclination (i)7.83297429° ± 1.03e-05
Long. of Asc. Node (Ω)181.40779371° ± 2.93e-05
Arg. of Perihelion (ω)230.70161926° ± 3.20e-05
Mean Anomaly (M)211.49824250° ± 2.35e-05
Mean Motion (n)0.5184677327°/day ± 1.43e-08
Perihelion dist (q)0.57066786 AU ± 7.20e-08
Aphelion dist (Q)2.49852155 AU ± 8.48e-08
Orbital Period1.90103688 yr ± 5.26e-08
Physical Parameters
H (abs. magnitude)21.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.283″
Uncertainty0
Orbit TypeApollo
MOID0.074371 AU
Observations Used108
Oppositions1
Arc Total2021-2024
First Observation Used2021-02-16
Last Observation Used2024-08-05
Observations (112)
Date Type RA Dec Mag Band Observatory
2021-02-25 01:18:43 C 11 59 45.17 -16 40 08.5 V 204
2021-02-25 06:17:07 C 11 58 37.93 -16 21 14.5 V I52
2021-02-25 06:17:56 C 11 58 37.69 -16 21 11.8 V I52
2021-02-25 06:18:45 C 11 58 37.54 -16 21 08.6 V I52
2021-02-26 10:24:37 C 11 52 22.31 -14 38 21.3 V I52
2021-02-26 10:27:19 C 11 52 21.71 -14 38 11.4 V I52
2021-02-26 10:28:40 C 11 52 21.36 -14 38 06.3 V I52
2021-03-03 05:47:35 C 11 31 14.44 -08 31 24.0 u 807
2021-03-03 05:49:32 C 11 31 14.10 -08 31 18.4 u 807
2021-03-03 05:51:29 C 11 31 13.79 -08 31 13.0 u 807
2021-03-04 16:26:58 C 11 26 02.88 -06 58 30.0 q D29
2021-03-04 16:47:20 C 11 25 59.80 -06 57 37.0 q D29
2021-03-04 17:07:41 C 11 25 56.71 -06 56 44.0 q D29
2021-03-06 00:01:18 C 11 21 42.06 -05 39 30.7 V K87
2021-03-06 00:09:44 C 11 21 40.91 -05 39 10.0 V K87
2021-03-06 00:18:11 C 11 21 39.59 -05 38 49.3 V K87
2021-03-07 00:41:36 C 11 18 32.39 -04 41 29.9 V K87
2021-03-07 00:49:00 C 11 18 31.47 -04 41 13.1 V K87
2021-03-07 00:56:21 C 11 18 30.55 -04 40 56.7 V K87
2021-03-07 07:09:32 C 11 17 45.36 -04 26 44.3 V G96
2021-03-07 07:16:59 C 11 17 44.41 -04 26 27.9 V G96
2021-03-07 07:24:28 C 11 17 43.43 -04 26 10.4 V G96
2021-03-07 07:31:55 C 11 17 42.47 -04 25 53.9 V G96
2021-03-10 04:29:58 C 11 10 03.09 -02 02 28.7 V I52
2021-03-10 04:31:38 C 11 10 02.85 -02 02 25.5 V I52
2021-03-10 04:35:00 C 11 10 02.57 -02 02 18.6 V I52
2021-03-12 14:42:38 C 11 04 34.64 -00 18 09.0 q D29
2021-03-12 15:03:00 C 11 04 32.76 -00 17 35.6 q D29
2021-03-12 15:23:22 C 11 04 30.85 -00 17 01.4 q D29
2021-03-13 14:54:52 C 11 02 32.83 +00 21 10.2 q D29
2021-03-13 15:15:14 C 11 02 31.06 +00 21 42.3 q D29
2021-03-15 05:55:26 C 10 59 33.46 +01 20 00.0 o 691
2021-03-15 06:04:16 C 10 59 32.76 +01 20 12.5 o 691
2021-03-15 06:13:07 C 10 59 32.09 +01 20 25.0 o 691
2021-03-15 09:27:36 C 10 59 17.971 +01 25 07.36 U F52
2021-03-15 09:44:33 C 10 59 16.642 +01 25 31.63 U F52
2021-03-15 10:01:25 C 10 59 15.312 +01 25 55.46 U F52
2021-03-15 10:18:14 C 10 59 13.996 +01 26 19.50 U F52
2021-03-23 03:58:48 C 10 49 07.48 +04 59 21.5 u 807
2021-03-23 04:04:44 C 10 49 07.22 +04 59 27.3 u 807
2021-03-23 04:10:37 C 10 49 06.95 +04 59 32.2 u 807
2021-03-23 04:33:24 C 10 49 06.71 +04 59 33.1 V I52
2021-03-23 04:38:15 C 10 49 06.51 +04 59 37.5 V I52
2021-03-23 04:43:06 C 10 49 06.30 +04 59 41.4 V I52
2021-04-02 02:01:22 C 10 43 20.71 +07 39 55.6 u H21
2021-04-02 02:34:39 C 10 43 20.24 +07 40 11.2 u H21
2021-04-09 07:28:45 C 10 42 40.330 +08 45 30.16 U F51
2021-04-09 07:47:34 C 10 42 40.307 +08 45 35.34 U F51
2021-04-09 08:06:22 C 10 42 40.296 +08 45 40.90 U F51
2022-06-29 07:25:20 C 17 36 55.967 -05 53 32.94 V T12