2021 DE

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7596431000
Semi-major axis (a)1.3890381000 AU
Inclination (i)4.74519000°
Long. of Asc. Node (Ω)337.13329000°
Arg. of Perihelion (ω)304.12403000°
Mean Anomaly (M)291.93982000°
Mean Motion (n)0.6020504000°/day
Perihelion dist (q)0.33386490 AU
Aphelion dist (Q)2.44421130 AU
Orbital Period1.63708500 yr
Physical Parameters
H (abs. magnitude)24.37
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.710″
Uncertainty8
Orbit TypeApollo
MOID0.002465 AU
Observations Used70
Radar Obs Used1
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-02-27
Observations (73)
Date Type RA Dec Mag Band Observatory
2021-02-16 12:24:49 C 11 32 06.956 +06 38 44.93 U F52
2021-02-16 12:42:40 C 11 32 05.949 +06 38 47.40 U F52
2021-02-16 13:00:32 C 11 32 04.937 +06 38 49.63 U F52
2021-02-16 13:18:17 C 11 32 03.949 +06 38 51.60 U F52
2021-02-17 09:36:48 C 11 31 09.140 +06 41 51.21 V 568
2021-02-17 09:38:13 C 11 31 09.052 +06 41 51.45 V 568
2021-02-17 11:44:51 C 11 30 58.26 +06 42 01.4 o 691
2021-02-17 12:01:49 C 11 30 57.23 +06 42 03.9 o 691
2021-02-17 12:18:48 C 11 30 56.14 +06 42 06.5 o 691
2021-02-18 02:48:24 C 11 30 07.17 +06 44 28.4 V 033
2021-02-18 02:53:34 C 11 30 06.78 +06 44 29.0 V 033
2021-02-18 02:58:44 C 11 30 06.43 +06 44 30.0 V 033
2021-02-18 06:47:36 C 11 29 52.85 +06 46 32.4 V 807
2021-02-18 06:50:43 C 11 29 52.60 +06 46 33.1 V 807
2021-02-18 06:53:48 C 11 29 52.34 +06 46 33.7 V 807
2021-02-19 06:58:52 C 11 28 06.39 +06 52 11.8 u 807
2021-02-19 07:04:48 C 11 28 05.78 +06 52 13.7 u 807
2021-02-19 07:10:43 C 11 28 05.18 +06 52 15.2 u 807
2021-02-21 11:45:09 C 11 22 03.28 +07 09 40.6 V H06
2021-02-21 12:28:01 C 11 21 56.05 +07 09 59.6 V H06
2021-02-23 23:55:27 C 11 06 54.69 +07 55 34.5 V Z41
2021-02-24 00:07:46 C 11 06 49.17 +07 55 49.9 V Z41
2021-02-24 00:22:20 C 11 06 42.66 +07 56 08.5 V Z41
2021-02-24 06:00:06 C 11 04 17.04 +08 03 41.6 V 703
2021-02-24 06:07:37 C 11 04 13.18 +08 03 52.2 V 703
2021-02-24 06:22:40 C 11 04 05.72 +08 04 15.4 V 703
2021-02-24 08:58:47 C 11 02 43.83 +08 07 56.6 V I52
2021-02-24 09:01:50 C 11 02 42.17 +08 08 01.0 V I52
2021-02-24 09:04:10 C 11 02 40.91 +08 08 04.5 V I52
2021-02-24 09:05:35 C 11 02 40.15 +08 08 06.4 V I52
2021-02-24 23:06:39 C 10 54 23.76 +08 31 26.5 V 203
2021-02-24 23:18:11 C 10 54 15.15 +08 31 49.7 V 203
2021-02-24 23:29:50 C 10 54 06.43 +08 32 13.3 V 203
2021-02-25 04:54:09 C 10 50 04.40 +08 44 21.1 V I52
2021-02-25 04:54:43 C 10 50 03.93 +08 44 22.6 V I52
2021-02-25 04:57:43 C 10 50 01.33 +08 44 29.8 V I52
2021-02-25 05:00:43 C 10 49 58.72 +08 44 36.8 V I52
2021-02-25 21:12:35 C 10 32 32.57 +09 30 40.1 V G17
2021-02-25 21:18:07 C 10 32 24.57 +09 31 01.0 V G17
2021-02-25 21:26:44 C 10 32 13.06 +09 31 01.8 V Z80
2021-02-25 21:31:43 C 10 32 05.88 +09 31 20.2 V Z80
2021-02-25 21:36:43 C 10 31 58.65 +09 31 38.6 V Z80
2021-02-26 20:59:25 C 09 35 58.98 +11 36 20.3 V Z99
2021-02-26 21:01:14 C 09 35 51.57 +11 36 34.0 V Z99
2021-02-26 21:03:07 C 09 35 43.88 +11 36 48.4 V Z99
2021-02-26 21:05:00 C 09 35 36.25 +11 37 02.8 V Z99
2021-02-26 21:06:50 C 09 35 28.80 +11 37 16.6 V Z99
2021-02-26 21:20:10 C 09 34 30.62 +11 39 49.4 V 595
2021-02-26 21:23:54 C 09 34 15.09 +11 40 18.2 V 595
2021-02-26 21:25:46 C 09 34 07.25 +11 40 32.4 V 595
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2021-02-28 23:50:00 -1218649.7 1 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)