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
2004-05-09 05:44:29 C 10 11 35.55 +45 03 05.2 r 649
2004-05-09 05:51:19 C 10 11 36.80 +45 03 12.5 r 649
2004-05-09 06:04:57 C 10 11 39.11 +45 03 26.4 r 649
2004-05-24 05:07:20 C 11 07 07.52 +48 48 02.0 c 673
2004-05-24 05:20:30 C 11 07 09.27 +48 48 05.4 c 673
2004-05-24 05:40:10 C 11 07 11.87 +48 48 10.2 c 673
2004-05-24 05:56:40 C 11 07 14.04 +48 48 14.4 c 673
2004-05-25 05:19:59 C 11 10 22.82 +48 54 21.8 c 673
2004-05-25 05:35:59 C 11 10 24.93 +48 54 24.8 c 673
2004-05-25 05:56:40 C 11 10 27.64 +48 54 29.4 c 673
2004-05-25 06:12:10 C 11 10 29.64 +48 54 32.3 c 673
2004-05-26 22:10:55 C 11 15 46.21 +49 03 17.8 o J50
2004-05-26 22:12:35 C 11 15 46.43 +49 03 18.2 o J50
2004-05-26 22:49:01 C 11 15 51.05 +49 03 24.5 o J50
2004-05-26 23:24:21 C 11 15 55.57 +49 03 30.6 o J50
2004-05-26 23:47:03 C 11 15 58.46 +49 03 34.4 o J50
2009-03-30 10:09:08 C 17 08 22.66 +27 10 53.6 r 703
2009-03-30 10:21:30 C 17 08 22.27 +27 12 12.2 r 703
2009-03-30 10:33:52 C 17 08 21.87 +27 13 28.1 r 703
2009-03-31 10:56:30 C 17 07 41.08 +29 40 43.2 r G96
2009-03-31 11:11:57 C 17 07 40.51 +29 42 14.4 r G96
2009-03-31 11:27:30 C 17 07 39.93 +29 43 46.3 r G96
2009-03-31 11:42:54 C 17 07 39.36 +29 45 17.1 r G96
2009-03-31 12:09:44 C 17 07 38.38 +29 47 55.4 r G96
2009-03-31 12:10:29 C 17 07 38.35 +29 47 59.9 r G96
2009-03-31 12:11:03 C 17 07 38.35 +29 48 03.6 r G96
2009-03-31 12:11:48 C 17 07 38.31 +29 48 07.7 r G96
2011-10-23 00:27:34 C 21 21 11.42 +10 58 27.6 o H21
2011-10-23 00:49:08 C 21 21 11.88 +10 57 43.9 o H21
2011-10-23 01:12:33 C 21 21 12.42 +10 56 56.8 o H21
2016-08-25 06:55:37 C 00 16 47.24 +44 53 32.7 u H21
2016-08-25 07:08:30 C 00 16 46.58 +44 53 25.8 u H21
2016-08-25 07:24:33 C 00 16 45.77 +44 53 17.4 u H21
2016-09-25 05:31:41 C 23 19 46.30 +26 42 46.5 q G96
2016-09-25 05:37:51 C 23 19 45.81 +26 42 29.3 q G96
2016-09-25 05:44:08 C 23 19 45.19 +26 42 13.5 q G96
2016-09-25 05:50:21 C 23 19 44.61 +26 41 57.3 q G96
2016-09-27 10:47:40 C 23 15 11.31 +24 20 56.7 q G96
2016-09-27 10:51:00 C 23 15 11.03 +24 20 47.5 q G96
2016-09-27 10:53:03 C 23 15 10.82 +24 20 42.1 q G96
2016-10-20 03:05:59 C 22 41 21.81 -02 40 52.1 q G96
2016-10-20 03:15:08 C 22 41 21.51 -02 41 17.4 q G96
2016-10-20 03:21:23 C 22 41 21.22 -02 41 34.0 q G96
2016-10-20 03:27:35 C 22 41 20.94 -02 41 50.6 q G96
2021-09-11 10:50:00 C 02 10 50.391 +20 58 11.97 U F51
2021-09-11 11:07:43 C 02 10 50.223 +20 57 36.80 U F51
2021-09-11 11:43:09 C 02 10 49.900 +20 56 26.74 U F51
2021-09-16 09:28:14 C 02 09 24.30 +16 33 43.9 V G96
2021-09-16 09:44:35 C 02 09 23.96 +16 33 03.3 V G96
2021-09-16 09:53:38 C 02 09 23.76 +16 32 41.0 V G96