IAA RAS IAA Minor Planet Database

2020 HD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5125355314 ± 1.12e-04
Semi-major axis (a)2.2651512930 AU ± 5.23e-04
Inclination (i)5.34144201° ± 8.35e-04
Long. of Asc. Node (Ω)218.24542312° ± 1.83e-04
Arg. of Perihelion (ω)16.99989787° ± 1.41e-04
Mean Anomaly (M)223.72100019° ± 2.04e-01
Mean Motion (n)0.2891122239°/day ± 1.00e-04
Perihelion dist (q)1.10418077 AU ± 3.60e-04
Aphelion dist (Q)3.42612181 AU ± 8.31e-04
Orbital Period3.40914774 yr ± 1.18e-03
Physical Parameters
H (abs. magnitude)24.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.228″
Uncertainty3
Orbit TypeAmor
MOID0.096525 AU
Observations Used54
Oppositions1
Arc Total2020-2020
First Observation Used2020-04-15
Last Observation Used2020-05-19
Observations (59)
Date Type RA Dec Mag Band Observatory
2020-04-15 10:15:02 C 13 10 01.935 -17 27 40.07 – V F51
2020-04-15 10:30:45 C 13 10 03.950 -17 27 34.08 – V F51
2020-04-19 10:20:47 C 13 25 35.766 -16 43 23.30 – V F51
2020-04-19 10:37:57 C 13 25 38.535 -16 43 13.61 – V F51
2020-04-20 10:14:29 C 13 30 00.350 -16 29 26.20 – U F52
2020-04-20 10:28:36 C 13 30 02.757 -16 29 17.20 – U F52
2020-04-20 10:42:45 C 13 30 05.165 -16 29 08.55 – U F52
2020-04-20 22:29:09 C 13 32 21.73 -16 22 08.6 – V 033
2020-04-20 22:34:18 C 13 32 22.65 -16 22 05.8 – V 033
2020-04-20 22:39:27 C 13 32 23.68 -16 22 02.3 – V 033
2020-04-21 09:43:18 C 13 34 31.41 -16 14 34.7 – V I52
2020-04-21 09:45:22 C 13 34 31.77 -16 14 31.8 – V I52
2020-04-21 09:49:29 C 13 34 32.54 -16 14 28.8 – V I52
2020-04-21 22:12:51 C 13 37 05.49 -16 06 19.4 – V 033
2020-04-21 22:22:00 C 13 37 07.25 -16 06 12.9 – V 033
2020-04-21 22:26:41 C 13 37 08.13 -16 06 09.6 – V 033
2020-04-22 23:24:19 C 13 42 21.09 -15 47 55.6 – V L01
2020-04-22 23:28:51 C 13 42 22.03 -15 47 52.3 – V L01
2020-04-22 23:33:55 C 13 42 23.11 -15 47 49.1 – V L01
2020-04-25 08:57:49 C 13 55 29.861 -14 59 29.26 – U F51
2020-04-25 09:15:46 C 13 55 33.831 -14 59 13.13 – U F51
2020-04-25 09:51:17 C 13 55 41.640 -14 58 40.95 – U F51
2020-04-27 07:49:05 C 14 07 14.48 -14 13 37.2 – V G96
2020-04-27 07:56:30 C 14 07 16.32 -14 13 29.5 – V G96
2020-04-27 08:03:56 C 14 07 18.14 -14 13 21.1 – V G96
2020-04-27 08:11:21 C 14 07 19.95 -14 13 13.4 – V G96
2020-04-27 09:52:25 C 14 07 48.125 -14 11 15.51 – U F51
2020-04-27 10:08:23 C 14 07 51.950 -14 10 58.67 – U F51
2020-04-27 10:24:03 C 14 07 55.750 -14 10 42.04 – U F51
2020-04-27 10:39:44 C 14 07 59.541 -14 10 25.28 – U F51
2020-05-02 06:02:32 C 14 41 22.81 -11 47 57.2 – V G96
2020-05-02 06:09:56 C 14 41 24.99 -11 47 46.2 – V G96
2020-05-02 06:17:18 C 14 41 27.12 -11 47 36.3 – V G96
2020-05-02 06:24:40 C 14 41 29.26 -11 47 26.6 – V G96
2020-05-03 08:41:25 C 14 49 48.27 -11 09 19.0 – V I52
2020-05-03 08:51:27 C 14 49 51.30 -11 09 03.7 – V I52
2020-05-03 08:53:51 C 14 49 52.02 -11 08 59.7 – V I52
2020-05-11 07:47:38 C 15 55 49.184 -05 45 50.77 – U F51
2020-05-11 08:02:55 C 15 55 54.313 -05 45 23.61 – U F51
2020-05-12 09:56:45 C 16 04 54.97 -04 58 55.7 – V I52
2020-05-12 10:01:37 C 16 04 56.61 -04 58 47.2 – V I52
2020-05-12 10:06:29 C 16 04 58.21 -04 58 37.8 – V I52
2020-05-12 10:11:21 C 16 04 59.78 -04 58 29.3 – V I52
2020-05-14 09:30:19 C 16 21 25.71 -03 34 01.2 – V G96
2020-05-14 09:37:20 C 16 21 27.95 -03 33 48.5 – V G96
2020-05-14 09:51:17 C 16 21 32.44 -03 33 23.9 – V G96
2020-05-14 09:58:31 C 16 21 38.979 -03 32 55.03 – U F52
2020-05-14 10:02:15 C 16 21 40.196 -03 32 48.77 – U F52
2020-05-14 10:18:16 C 16 21 45.271 -03 32 20.54 – U F52
2020-05-14 10:22:00 C 16 21 46.461 -03 32 13.88 – U F52