2005 HC4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.9611995000
Semi-major axis (a)1.8206047000 AU
Inclination (i)8.55648000°
Long. of Asc. Node (Ω)62.30625000°
Arg. of Perihelion (ω)310.52105000°
Mean Anomaly (M)111.85168000°
Mean Motion (n)0.4012181500°/day
Perihelion dist (q)0.07064040 AU
Aphelion dist (Q)3.57056900 AU
Orbital Period2.45653800 yr
Physical Parameters
H (abs. magnitude)20.70
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.560″
Uncertainty9
Orbit TypeApollo
MOID0.059131 AU
Observations Used50
Oppositions1
Arc Total
First Observation Used
Last Observation Used2005-05-11
Observations (53)
Date Type RA Dec Mag Band Observatory
2005-04-30 07:26:26 C 13 30 01.09 +09 26 11.2 o 699
2005-04-30 07:49:44 C 13 29 50.29 +09 27 34.7 o 699
2005-04-30 08:13:03 C 13 29 39.46 +09 28 59.1 o 699
2005-04-30 08:36:23 C 13 29 28.60 +09 30 22.4 o 699
2005-04-30 19:46:23 C 13 24 16.29 +10 11 10.3 c A50
2005-04-30 19:48:15 C 13 24 15.48 +10 11 17.1 r 118
2005-04-30 19:51:55 C 13 24 13.55 +10 11 31.2 c A50
2005-04-30 19:53:00 C 13 24 13.03 +10 11 35.4 c A50
2005-04-30 19:58:58 C 13 24 10.26 +10 11 57.2 r 118
2005-04-30 20:00:44 C 13 24 09.21 +10 12 02.6 c A50
2005-04-30 20:02:57 C 13 24 08.19 +10 12 11.0 c A50
2005-04-30 20:06:17 C 13 24 06.27 +10 12 24.6 c A50
2005-05-01 00:25:42 C 13 22 01.03 +10 28 32.6 r J87
2005-05-01 00:29:53 C 13 21 58.94 +10 28 47.5 r J87
2005-05-01 00:34:05 C 13 21 56.87 +10 29 02.6 r J87
2005-05-01 04:24:06 C 13 20 05.75 +10 43 29.6 r H36
2005-05-01 04:32:56 C 13 20 01.47 +10 43 58.4 r H36
2005-05-01 06:15:10 C 13 19 10.73 +10 50 28.1 r 448
2005-05-01 06:16:11 C 13 19 10.37 +10 50 31.2 c 854
2005-05-01 06:17:16 C 13 19 09.75 +10 50 37.3 c 854
2005-05-01 06:27:04 C 13 19 04.80 +10 51 12.8 r 448
2005-05-01 06:39:00 C 13 18 58.81 +10 51 57.7 r 448
2005-05-01 06:50:54 C 13 18 52.91 +10 52 42.5 r 448
2005-05-01 08:15:33 C 13 18 10.54 +10 58 01.5 c 854
2005-05-01 08:21:09 C 13 18 07.68 +10 58 23.5 c 854
2005-05-01 08:26:45 C 13 18 04.87 +10 58 44.3 c 854
2005-05-01 08:32:19 C 13 18 02.17 +10 59 05.3 c 854
2005-05-01 14:05:40 C 13 15 15.65 +11 20 44.6 r 413
2005-05-01 14:16:39 C 13 15 10.02 +11 21 26.5 r 413
2005-05-02 09:05:00 C 13 05 24.12 +12 33 54.5 F65
2005-05-02 09:06:14 C 13 05 23.44 +12 33 59.3 F65
2005-05-02 09:07:30 C 13 05 22.76 +12 34 04.1 F65
2005-05-02 09:08:45 C 13 05 22.09 +12 34 09.1 F65
2005-05-02 09:10:00 C 13 05 21.39 +12 34 13.9 F65
2005-05-02 09:11:10 C 13 05 20.77 +12 34 18.5 F65
2005-05-02 21:03:35 C 12 58 53.82 +13 20 58.0 r J95
2005-05-02 21:21:16 C 12 58 43.86 +13 22 08.8 r J95
2005-05-02 21:28:08 C 12 58 40.09 +13 22 36.9 r J95
2005-05-03 11:39:52 C 12 50 36.86 +14 19 38.0 F65
2005-05-03 11:41:02 C 12 50 36.22 +14 19 42.5 F65
2005-05-03 11:42:07 C 12 50 35.56 +14 19 47.0 F65
2005-05-04 10:42:17 C 12 36 55.83 +15 52 48.8 o F65
2005-05-04 10:43:33 C 12 36 55.05 +15 52 53.8 o F65
2005-05-04 10:44:43 C 12 36 54.29 +15 52 58.7 o F65
2005-05-06 22:03:54 C 11 58 09.80 +19 49 11.3 r 176
2005-05-06 22:04:52 C 11 58 09.13 +19 49 15.1 r 176
2005-05-06 22:05:51 C 11 58 08.42 +19 49 18.6 r 176
2005-05-06 22:06:42 C 11 58 07.85 +19 49 21.9 r 176
2005-05-06 22:07:34 C 11 58 07.27 +19 49 25.2 r 176
2005-05-06 22:08:26 C 11 58 06.67 +19 49 28.2 r 176