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
2022-04-04 03:59:44 C 08 42 15.106 -01 59 53.74 V G96
2022-04-04 04:07:51 C 08 42 18.551 -01 57 16.09 V G96
2022-04-05 19:52:26 C 08 59 03.51 +10 07 15.7 d B66
2022-04-05 20:00:36 C 08 59 06.65 +10 09 32.8 d B66
2022-04-06 00:09:11 C 09 00 46.778 +11 19 48.79 V W68
2022-04-06 00:13:06 C 09 00 48.254 +11 20 52.55 V W68
2022-04-06 00:14:42 C 09 00 45.19 +11 19 50.8 X C95
2022-04-06 00:17:23 C 09 00 46.25 +11 20 34.5 X C95
2022-04-06 00:17:40 C 09 00 49.990 +11 22 08.00 V W68
2022-04-06 00:20:02 C 09 00 47.23 +11 21 17.8 X C95
2022-04-06 00:22:42 C 09 00 48.27 +11 22 01.8 X C95
2022-04-06 00:25:21 C 09 00 49.29 +11 22 44.8 X C95
2022-04-06 00:31:22 C 09 00 55.174 +11 25 53.22 V W68
2022-04-06 04:34:56 C 09 02 29.681 +12 30 43.63 V 703
2022-04-06 04:43:07 C 09 02 32.773 +12 32 54.06 V 703
2022-04-06 04:51:18 C 09 02 35.830 +12 35 05.57 V 703
2022-04-06 04:59:29 C 09 02 38.908 +12 37 17.00 V 703
2022-04-06 22:30:44 C 09 09 21.09 +17 05 38.3 V J27
2022-04-06 22:34:17 C 09 09 22.37 +17 06 30.2 V J27
2022-04-06 22:41:36 C 09 09 25.02 +17 08 16.4 V J27
2022-04-07 05:53:47 C 09 12 07.973 +18 51 28.66 V T05
2022-04-07 05:56:25 C 09 12 08.861 +18 52 08.29 V T05
2022-04-07 06:00:23 C 09 12 10.306 +18 53 00.96 V T05
2022-04-07 06:18:25 C 09 12 16.546 +18 57 12.46 V T05
2022-04-08 03:45:09 C 09 19 56.272 +23 37 03.34 V U68
2022-04-08 03:48:31 C 09 19 56.860 +23 37 49.19 V 703
2022-04-08 03:50:49 C 09 19 58.172 +23 38 12.93 V U68
2022-04-08 03:56:43 C 09 19 59.606 +23 39 29.70 V 703
2022-04-08 04:04:56 C 09 20 02.310 +23 41 09.28 V 703
2022-04-08 04:13:07 C 09 20 05.035 +23 42 49.14 V 703
2022-04-08 04:18:32 C 09 20 07.374 +23 43 50.70 V U68
2022-04-08 04:24:12 C 09 20 09.245 +23 44 59.31 V U68
2022-04-09 05:34:20 C 09 28 38.309 +28 27 44.68 V T05
2022-04-09 05:37:38 C 09 28 39.408 +28 28 17.00 V T05
2022-04-09 05:59:23 C 09 28 46.044 +28 32 02.47 V T05
2022-04-09 06:06:00 C 09 28 48.062 +28 33 10.40 V T05
2022-04-14 20:00:23 C 10 05 56.91 +43 53 55.3 V 130
2022-04-14 20:06:49 C 10 05 58.36 +43 54 24.3 V 130
2022-04-14 20:12:54 C 10 05 59.76 +43 54 50.6 V 130
2022-04-14 21:34:13 C 10 06 17.62 +44 00 40.3 V L18
2022-04-14 21:41:17 C 10 06 19.26 +44 01 10.2 V L18
2022-04-14 21:48:21 C 10 06 20.88 +44 01 40.6 V L18
2022-04-15 06:10:15 C 10 08 17.858 +44 37 27.23 V 703
2022-04-15 06:17:56 C 10 08 19.626 +44 37 57.54 V 703
2022-04-15 06:25:38 C 10 08 21.318 +44 38 29.44 V 703
2022-04-15 06:33:19 C 10 08 23.179 +44 38 58.34 V 703
2022-04-16 01:47:05 S 10 12 46.159 +45 54 12.38 L C51
2022-04-16 04:55:13 S 10 13 27.665 +46 05 42.40 L C51
2022-04-16 08:03:10 S 10 14 08.818 +46 17 01.39 L C51
2022-04-16 11:11:18 S 10 14 49.682 +46 28 07.64 L C51