474585 (2004 HC2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3113617419 ± 3.77e-08
Semi-major axis (a)1.3871870114 AU ± 9.79e-10
Inclination (i)55.02777387° ± 2.30e-05
Long. of Asc. Node (Ω)190.32574363° ± 4.13e-06
Arg. of Perihelion (ω)303.15283716° ± 9.25e-06
Mean Anomaly (M)109.53059956° ± 6.22e-06
Mean Motion (n)0.6032672590°/day ± 6.39e-10
Perihelion dist (q)0.95527005 AU ± 5.23e-08
Aphelion dist (Q)1.81910398 AU ± 5.23e-08
Orbital Period1.63381365 yr ± 1.73e-09
Physical Parameters
H (abs. magnitude)19.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.458″
Uncertainty0
Orbit TypeApollo
MOID0.068895 AU
Observations Used196
Oppositions7
Arc Total2004-2022
First Observation Used2004-04-16
Last Observation Used2022-05-19
Observations (227)
Date Type RA Dec Mag Band Observatory
2004-04-16 03:20:00 C 08 01 07.843 +16 23 25.33 n 645
2004-04-16 03:21:12 C 08 01 08.222 +16 23 33.43 n 645
2004-04-16 03:24:47 C 08 01 09.252 +16 23 55.68 n 645
2004-04-19 03:23:57 C 08 22 11.05 +23 21 31.9 19.8 c 704
2004-04-19 03:40:08 C 08 22 15.48 +23 22 56.9 20.5 c 704
2004-04-19 03:58:01 C 08 22 20.56 +23 24 31.2 20.3 c 704
2004-04-19 04:14:11 C 08 22 24.98 +23 25 55.1 20.2 c 704
2004-04-19 04:30:11 C 08 22 29.45 +23 27 19.1 20.3 c 704
2004-04-20 03:10:21 C 08 28 51.09 +25 22 15.8 19.8 c 704
2004-04-20 03:10:42 C 08 28 51.19 +25 22 18.3 19.5 c 704
2004-04-20 03:10:57 C 08 28 51.21 +25 22 19.3 19.8 c 704
2004-04-20 03:26:26 C 08 28 55.53 +25 23 35.7 20.3 c 704
2004-04-20 03:26:40 C 08 28 55.49 +25 23 37.0 20.2 c 704
2004-04-20 03:26:46 C 08 28 55.55 +25 23 37.3 19.9 c 704
2004-04-20 03:42:00 C 08 28 59.75 +25 24 51.3 20.2 c 704
2004-04-20 03:42:14 C 08 28 59.77 +25 24 53.2 20.0 c 704
2004-04-20 03:43:07 C 08 28 59.98 +25 24 55.7 19.8 c 704
2004-04-20 03:58:18 C 08 29 04.11 +25 26 10.4 20.1 c 704
2004-04-20 03:58:33 C 08 29 04.14 +25 26 10.9 20.2 c 704
2004-04-20 03:59:21 C 08 29 04.37 +25 26 15.2 19.9 c 704
2004-04-20 04:14:42 C 08 29 08.66 +25 27 29.5 20.6 c 704
2004-04-20 04:14:57 C 08 29 08.67 +25 27 31.0 20.8 c 704
2004-04-20 04:15:32 C 08 29 08.87 +25 27 35.0 20.0 c 704
2004-04-20 21:07:18 C 08 33 47.09 +26 47 52.7 c 587
2004-04-20 21:11:56 C 08 33 48.35 +26 48 15.5 c 587
2004-04-20 21:13:39 C 08 33 48.82 +26 48 24.3 r 176
2004-04-20 21:14:38 C 08 33 49.08 +26 48 29.0 r 176
2004-04-20 21:15:38 C 08 33 49.35 +26 48 33.7 r 176
2004-04-20 21:16:32 C 08 33 49.53 +26 48 34.4 c 587
2004-04-20 21:16:37 C 08 33 49.62 +26 48 38.3 r 176
2004-04-21 03:15:29 C 08 35 27.65 +27 16 14.9 19.5 c 704
2004-04-21 03:31:52 C 08 35 31.92 +27 17 28.5 20.0 c 704
2004-04-21 04:03:58 C 08 35 40.50 +27 19 54.5 19.4 c 704
2004-04-21 04:20:11 C 08 35 44.79 +27 21 07.6 20.0 c 704
2004-04-21 05:03:53 C 08 35 56.51 +27 24 27.3 c 854
2004-04-21 05:13:30 C 08 35 59.07 +27 25 09.1 c 854
2004-04-21 05:16:20 C 08 36 00.04 +27 25 22.3 c 673
2004-04-21 05:20:40 C 08 36 01.17 +27 25 41.9 c 673
2004-04-21 05:22:10 C 08 36 01.54 +27 25 49.1 c 673
2004-04-21 05:24:10 C 08 36 01.92 +27 25 57.8 c 854
2004-04-21 05:26:00 C 08 36 02.59 +27 26 06.1 c 673
2004-04-21 05:28:20 C 08 36 03.24 +27 26 17.4 c 673
2004-04-21 05:32:59 C 08 36 04.45 +27 26 38.0 c 673
2004-04-27 03:30:10 C 09 12 02.14 +36 04 47.3 c 673
2004-04-27 03:36:50 C 09 12 03.64 +36 05 05.6 c 673
2004-04-27 03:41:49 C 09 12 04.80 +36 05 19.5 c 673
2004-04-27 03:54:30 C 09 12 07.67 +36 05 55.9 c 673
2004-05-02 03:52:57 C 09 38 48.20 +40 50 52.1 c 926
2004-05-02 03:54:45 C 09 38 48.71 +40 50 54.3 c 926
2004-05-02 03:56:32 C 09 38 49.08 +40 50 58.7 c 926