IAA RAS IAA Minor Planet Database

2004 HH20

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4182514339
Semi-major axis (a)1.7773444004 AU
Inclination (i)4.12560303°
Long. of Asc. Node (Ω)32.52737762°
Arg. of Perihelion (ω)199.35312479°
Mean Anomaly (M)25.24413291°
Mean Motion (n)0.4159592800°/day
Perihelion dist (q)1.03396580 AU
Aphelion dist (Q)2.52070040 AU
Orbital Period2.36948110 yr
Physical Parameters
H (abs. magnitude)25.40
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.660″
Uncertainty—
Orbit TypeAmor
MOID0.031237 AU
Observations Used43
Oppositions1
Arc Total2004-2004
First Observation Used—
Last Observation Used2004-04-30
Observations (47)
Date Type RA Dec Mag Band Observatory
2004-04-21 08:50:32 C 14 04 50.35 -10 35 41.9 19.0 c 704
2004-04-21 09:06:27 C 14 04 56.61 -10 37 29.3 19.4 c 704
2004-04-21 09:22:21 C 14 05 02.80 -10 39 16.7 19.7 c 704
2004-04-21 09:38:29 C 14 05 09.24 -10 41 05.9 19.2 c 704
2004-04-21 09:54:24 C 14 05 15.75 -10 42 53.8 19.5 c 704
2004-04-22 07:07:25 C 14 15 10.78 -13 13 56.4 18.7 c 704
2004-04-22 07:07:39 C 14 15 10.87 -13 14 00.4 18.7 c 704
2004-04-22 07:22:49 C 14 15 17.51 -13 15 51.1 19.0 c 704
2004-04-22 07:37:54 C 14 15 24.12 -13 17 43.0 19.0 c 704
2004-04-22 07:38:08 C 14 15 24.25 -13 17 44.3 18.8 c 704
2004-04-22 07:53:04 C 14 15 30.81 -13 19 34.4 18.9 c 704
2004-04-22 07:53:18 C 14 15 30.90 -13 19 35.1 19.3 c 704
2004-04-22 08:08:26 C 14 15 37.49 -13 21 29.1 19.4 c 704
2004-04-22 23:13:54 C 14 23 21.72 -15 16 52.9 – r J95
2004-04-22 23:20:06 C 14 23 24.74 -15 17 38.5 – r J95
2004-04-23 07:05:43 C 14 27 33.42 -16 18 19.1 19.0 c 704
2004-04-23 07:21:13 C 14 27 41.20 -16 20 23.7 19.3 c 704
2004-04-23 07:23:57 C 14 27 42.60 -16 20 45.6 18.4 c 704
2004-04-23 07:36:31 C 14 27 48.77 -16 22 26.5 19.6 c 704
2004-04-23 07:39:18 C 14 27 50.12 -16 22 50.0 19.8 c 704
2004-04-23 07:52:14 C 14 27 56.52 -16 24 31.7 19.6 c 704
2004-04-23 07:54:31 C 14 27 57.69 -16 24 48.9 19.3 c 704
2004-04-23 08:08:48 C 14 28 04.86 -16 26 43.8 18.9 c 704
2004-04-23 08:09:45 C 14 28 05.27 -16 26 51.0 19.0 c 704
2004-04-23 08:24:54 C 14 28 12.86 -16 28 51.0 19.3 c 704
2004-04-23 11:24:25 C 14 29 59.59 -16 48 36.9 – r 474
2004-04-23 11:25:49 C 14 30 00.38 -16 48 49.4 – r 474
2004-04-23 11:28:59 C 14 30 02.06 -16 49 15.2 – r 474
2004-04-23 11:31:50 C 14 30 03.51 -16 49 38.4 – r 474
2004-04-24 00:03:48 C 14 37 14.29 -18 37 30.5 – r J95
2004-04-24 00:15:27 C 14 37 20.72 -18 39 10.5 – r J95
2004-04-24 00:25:57 C 14 37 26.63 -18 40 36.9 – r J95
2004-04-24 07:57:39 C 14 42 11.54 -19 38 36.1 – r 474
2004-04-24 07:59:19 C 14 42 12.26 -19 38 45.8 – r 474
2004-04-24 08:01:00 C 14 42 13.09 -19 38 58.5 – r 474
2004-04-24 08:05:09 C 14 42 15.75 -19 39 36.4 – r 474
2004-04-25 09:26:09 C 14 58 54.46 -23 20 19.3 – c 474
2004-04-25 09:28:09 C 14 58 55.84 -23 20 37.3 – c 474
2004-04-25 09:56:19 C 14 59 14.70 -23 24 53.5 – c 474
2004-04-25 10:00:09 C 14 59 17.25 -23 25 28.4 – c 474
2004-04-25 11:56:30 C 15 00 34.21 -23 43 00.4 – c 474
2004-04-25 11:58:19 C 15 00 35.42 -23 43 16.8 – c 474
2004-04-25 12:02:19 C 15 00 38.06 -23 43 52.8 – c 474
2004-04-25 12:04:39 C 15 00 39.60 -23 44 14.0 – c 474
2004-04-30 17:19:06 C 16 53 45.30 -40 46 26.3 – r 413
2004-04-30 17:30:37 C 16 53 56.69 -40 47 34.8 – r 413
2004-04-30 17:41:47 C 16 54 05.82 -40 48 34.0 – r 413