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
2021-09-28 08:15:25 C 01 59 28.82 +01 21 27.2 V U68
2021-09-28 08:20:13 C 01 59 28.58 +01 21 09.3 V U68
2021-09-28 08:49:06 C 01 59 26.98 +01 19 17.4 V U68
2021-09-28 08:53:55 C 01 59 26.71 +01 18 58.8 V U68
2021-09-28 10:12:13 C 01 59 22.943 +01 13 58.38 U F52
2021-09-28 10:29:32 C 01 59 21.964 +01 12 50.75 U F52
2021-09-28 10:46:49 C 01 59 20.985 +01 11 43.60 U F52
2021-09-28 11:04:13 C 01 59 19.994 +01 10 35.90 U F52
2021-10-01 08:06:11 C 01 55 24.38 -03 28 50.7 U I41
2021-10-01 08:26:49 C 01 55 23.03 -03 30 17.1 U I41
2021-10-01 08:40:37 C 01 55 22.14 -03 31 14.8 U I41
2021-10-01 08:42:00 C 01 55 22.04 -03 31 20.6 U I41
2021-10-02 15:48:04 C 01 53 24.06 -05 43 14.9 V D29
2021-10-02 16:08:25 C 01 53 22.62 -05 44 42.5 V D29
2021-10-02 16:28:48 C 01 53 21.21 -05 46 09.8 V D29
2021-10-03 11:42:49 C 01 52 04.03 -07 09 17.4 V T05
2021-10-03 11:48:08 C 01 52 03.61 -07 09 40.0 V T05
2021-10-03 12:39:12 C 01 51 59.85 -07 13 21.3 V T05
2021-10-03 12:48:38 C 01 51 59.25 -07 14 02.9 V T05
2021-10-06 11:33:56 C 01 46 51.85 -12 27 41.2 V T05
2021-10-06 11:39:57 C 01 46 51.36 -12 28 07.8 V T05
2021-10-06 11:47:59 C 01 46 50.64 -12 28 43.4 V T05
2021-10-06 12:33:17 C 01 46 46.93 -12 32 06.4 V T05
2021-10-07 07:42:42 C 01 45 17.72 -13 58 23.2 V 703
2021-10-07 08:04:18 C 01 45 15.88 -14 00 00.4 V 703
2021-10-07 08:11:54 C 01 45 15.25 -14 00 35.1 V 703
2022-03-12 00:11:09 C 03 29 37.57 -71 45 41.0 u 807
2022-03-12 00:17:05 C 03 29 39.93 -71 45 37.8 u 807
2022-03-12 00:23:02 C 03 29 42.19 -71 45 35.0 u 807
2022-03-24 14:14:14 S 06 17 17.827 -61 14 27.13 L C51
2022-03-24 14:14:25 S 06 17 17.930 -61 14 26.74 L C51
2022-03-24 17:22:33 S 06 19 21.307 -60 56 26.56 L C51
2022-03-24 20:30:41 S 06 21 24.754 -60 37 58.51 L C51
2022-03-24 23:38:49 S 06 23 28.094 -60 19 02.71 L C51
2022-03-25 05:55:49 S 06 27 34.934 -59 39 44.14 L C51
2022-03-25 09:03:57 S 06 29 37.987 -59 19 21.50 L C51
2022-03-25 12:12:05 S 06 31 40.831 -58 58 28.38 L C51
2022-04-01 20:20:41 C 08 15 52.901 -20 29 44.81 V M22
2022-04-01 20:28:04 C 08 15 56.489 -20 27 19.51 V M22
2022-04-01 20:49:44 C 08 16 07.078 -20 20 11.58 V M22
2022-04-01 20:53:40 C 08 16 08.981 -20 18 54.43 V M22
2022-04-03 03:19:06 C 08 31 00.340 -10 10 27.98 V 703
2022-04-03 03:27:19 C 08 31 04.181 -10 07 41.02 V 703
2022-04-03 03:35:32 C 08 31 07.892 -10 04 55.16 V 703
2022-04-03 03:43:45 C 08 31 11.590 -10 02 09.46 V 703
2022-04-04 01:54:19 C 08 41 19.49 -02 40 43.0 V W46
2022-04-04 01:57:44 C 08 41 20.93 -02 39 36.3 V W46
2022-04-04 01:59:25 C 08 41 21.67 -02 39 03.1 V W46
2022-04-04 03:43:29 C 08 42 08.208 -02 05 10.03 V G96
2022-04-04 03:51:36 C 08 42 11.653 -02 02 31.85 V G96