2020 HM4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6892396113 ± 2.29e-06
Semi-major axis (a)2.2425428573 AU ± 1.51e-05
Inclination (i)2.31318233° ± 1.10e-05
Long. of Asc. Node (Ω)226.20810249° ± 4.50e-05
Arg. of Perihelion (ω)74.50220003° ± 3.78e-05
Mean Anomaly (M)219.73482094° ± 5.87e-03
Mean Motion (n)0.2934952986°/day ± 2.97e-06
Perihelion dist (q)0.69689349 AU ± 6.96e-06
Aphelion dist (Q)3.78819222 AU ± 2.60e-05
Orbital Period3.35823534 yr ± 3.39e-05
Physical Parameters
H (abs. magnitude)24.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.292″
Uncertainty1
Orbit TypeApollo
MOID0.001082 AU
Observations Used49
Radar Obs Used3
Oppositions1
Arc Total2020-2020
First Observation Used2020-04-20
Last Observation Used2020-05-06
Observations (49)
Date Type RA Dec Mag Band Observatory
2020-04-20 09:01:09 C 13 41 40.379 -15 00 26.75 U F51
2020-04-20 09:19:16 C 13 41 38.642 -15 00 19.47 U F51
2020-04-20 09:37:23 C 13 41 36.882 -15 00 12.33 U F51
2020-04-20 09:55:32 C 13 41 35.112 -15 00 04.97 U F51
2020-04-22 09:13:32 C 13 37 06.998 -14 37 37.41 U F51
2020-04-22 09:30:16 C 13 37 04.968 -14 37 28.47 U F51
2020-04-22 09:47:00 C 13 37 02.934 -14 37 19.36 U F51
2020-04-22 10:03:52 C 13 37 00.884 -14 37 10.29 U F51
2020-04-23 02:39:01 C 13 35 08.220 -14 27 39.90 V J04
2020-04-23 03:04:39 C 13 35 04.936 -14 27 23.48 V J04
2020-04-23 05:55:03 C 13 34 47.70 -14 25 43.9 V I52
2020-04-23 05:58:22 C 13 34 47.28 -14 25 41.5 V I52
2020-04-23 06:01:40 C 13 34 46.88 -14 25 39.5 V I52
2020-04-23 06:11:00 C 13 34 45.58 -14 25 33.7 V I52
2020-04-25 03:42:27 C 13 28 37.92 -13 52 33.8 V I52
2020-04-25 03:45:12 C 13 28 37.52 -13 52 32.0 V I52
2020-04-25 03:47:57 C 13 28 37.08 -13 52 29.2 V I52
2020-04-25 03:50:42 C 13 28 36.58 -13 52 27.0 V I52
2020-04-26 08:49:47 C 13 23 40.614 -13 25 12.02 U F51
2020-04-26 09:06:52 C 13 23 37.102 -13 24 54.33 U F51
2020-04-26 09:40:57 C 13 23 30.042 -13 24 18.65 U F51
2020-04-27 03:58:09 C 13 19 54.92 -13 03 53.4 V I52
2020-04-27 04:00:13 C 13 19 54.42 -13 03 52.0 V I52
2020-04-27 04:07:01 C 13 19 52.88 -13 03 43.6 V I52
2020-04-27 07:13:39 C 13 19 09.37 -12 59 56.9 V G96
2020-04-27 07:21:07 C 13 19 07.66 -12 59 47.5 V G96
2020-04-27 07:28:36 C 13 19 05.85 -12 59 38.3 V G96
2020-04-27 07:36:04 C 13 19 04.07 -12 59 29.3 V G96
2020-04-28 07:59:32 C 13 13 14.97 -12 25 49.0 V I52
2020-04-28 08:00:37 C 13 13 14.70 -12 25 47.4 V I52
2020-04-28 08:05:30 C 13 13 13.33 -12 25 39.7 V I52
2020-04-30 05:01:27 C 12 59 02.81 -11 00 02.6 V I52
2020-04-30 05:02:40 C 12 59 02.33 -10 59 59.3 V I52
2020-04-30 05:03:52 C 12 59 01.83 -10 59 56.3 V I52
2020-04-30 05:05:04 C 12 59 01.33 -10 59 53.7 V I52
2020-05-02 03:38:41 C 12 36 08.06 -08 34 10.7 V I52
2020-05-02 03:39:31 C 12 36 07.52 -08 34 07.6 V I52
2020-05-02 03:40:20 C 12 36 06.99 -08 34 03.9 V I52
2020-05-02 03:41:10 C 12 36 06.44 -08 34 00.5 V I52
2020-05-05 20:17:15 C 10 47 15.00 +03 59 40.2 V K87
2020-05-05 20:24:02 C 10 46 59.53 +04 01 25.5 V K87
2020-05-05 20:30:53 C 10 46 43.85 +04 03 12.3 V K87
2020-05-05 21:25:18 C 10 44 40.94 +04 17 18.7 V J95
2020-05-05 21:32:26 C 10 44 24.39 +04 19 10.9 V J95
2020-05-05 21:39:37 C 10 44 07.70 +04 21 04.4 V J95
2020-05-05 21:47:02 C 10 43 50.48 +04 23 01.1 V J95
2020-05-06 21:14:57 C 09 40 11.33 +11 22 39.0 V J95
2020-05-06 21:24:32 C 09 39 40.77 +11 25 43.4 V J95
2020-05-06 21:34:46 C 09 39 08.06 +11 29 00.0 V J95
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2020-05-07 21:27:00 -23771.7277 3 Hz 2380 -1 -1
2020-05-07 21:57:00 27441872.7 4 us 2380 -1 -1
2020-05-07 22:36:00 27470462.92 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)