276770 (2004 HC)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5986572565 ± 5.29e-02
Semi-major axis (a)0.7891607054 AU ± 4.40e-03
Inclination (i)28.98361583° ± 1.28e+00
Long. of Asc. Node (Ω)202.97679703° ± 1.30e+00
Arg. of Perihelion (ω)159.37354847° ± 9.23e+00
Mean Anomaly (M)169.31522197° ± 1.41e+01
Mean Motion (n)1.4059312934°/day ± 1.18e-02
Perihelion dist (q)0.31672392 AU ± 4.18e-02
Aphelion dist (Q)1.26159749 AU ± 4.24e-02
Orbital Period0.70104868 yr ± 5.86e-03
NGA Modelr2
A2-5.89814396e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-29
RMS Residual0.377″
Uncertainty0
Orbit TypeAten
MOID0.092940 AU
Observations Used230
Oppositions9
Arc Total2004-2025
First Observation Used2004-04-16
Last Observation Used2025-04-26
Observations (245)
Date Type RA Dec Mag Band Observatory
2004-04-16 04:36:43 C 11 36 44.15 -02 03 23.4 17.9 c 704
2004-04-16 04:52:14 C 11 36 39.13 -02 01 43.8 18.3 c 704
2004-04-16 05:07:43 C 11 36 34.17 -02 00 04.4 17.8 c 704
2004-04-16 05:23:11 C 11 36 29.17 -01 58 25.3 17.6 c 704
2004-04-16 05:38:54 C 11 36 24.15 -01 56 44.6 17.9 c 704
2004-04-16 19:21:17 C 11 32 10.43 -00 29 05.0 c A50
2004-04-16 19:23:31 C 11 32 09.72 -00 28 50.8 c A50
2004-04-16 19:25:11 C 11 32 09.19 -00 28 40.2 c A50
2004-04-16 19:27:25 C 11 32 08.49 -00 28 25.8 c A50
2004-04-16 19:29:04 C 11 32 07.95 -00 28 15.0 c A50
2004-04-16 19:30:45 C 11 32 07.40 -00 28 04.2 c A50
2004-04-16 19:56:47 C 11 31 59.65 -00 25 18.4 r 557
2004-04-16 19:57:38 C 11 31 59.36 -00 25 13.0 r 557
2004-04-16 19:58:28 C 11 31 59.13 -00 25 07.8 r 557
2004-04-16 19:59:19 C 11 31 58.87 -00 25 02.4 r 557
2004-04-16 20:00:09 C 11 31 58.58 -00 24 56.7 r 557
2004-04-16 20:01:07 C 11 31 58.25 -00 24 50.9 r 557
2004-04-16 20:01:58 C 11 31 57.99 -00 24 44.8 r 557
2004-04-16 20:02:49 C 11 31 57.74 -00 24 40.0 r 557
2004-04-16 20:03:38 C 11 31 57.50 -00 24 34.2 r 557
2004-04-16 20:10:14 C 11 31 55.59 -00 23 53.6 o 198
2004-04-16 20:12:47 C 11 31 54.85 -00 23 35.9 o 198
2004-04-16 20:15:22 C 11 31 54.02 -00 23 20.0 o 198
2004-04-16 20:17:26 C 11 31 53.36 -00 23 06.0 o 198
2004-04-16 20:23:05 C 11 31 51.58 -00 22 30.0 o 198
2004-04-16 20:27:43 C 11 31 50.09 -00 22 00.0 o 198
2004-04-16 21:02:52 C 11 31 38.75 -00 18 15.2 c 246
2004-04-16 21:03:23 C 11 31 38.57 -00 18 11.5 c 246
2004-04-16 21:04:39 C 11 31 38.21 -00 18 03.7 c 246
2004-04-16 21:05:07 C 11 31 38.02 -00 18 00.3 c 246
2004-04-16 21:05:48 C 11 31 37.79 -00 17 56.5 c 246
2004-04-16 21:25:31 C 11 31 31.69 -00 15 48.5 r 151
2004-04-16 21:29:47 C 11 31 30.32 -00 15 21.1 r 151
2004-04-16 21:31:26 C 11 31 29.81 -00 15 11.0 r 151
2004-04-16 21:32:24 C 11 31 29.49 -00 15 04.4 r 151
2004-04-17 04:26:06 C 11 29 22.98 +00 29 08.5 18.1 c 704
2004-04-17 04:27:56 C 11 29 22.32 +00 29 20.8 17.9 c 704
2004-04-17 04:28:05 C 11 29 22.30 +00 29 21.2 17.4 c 704
2004-04-17 04:42:16 C 11 29 17.77 +00 30 52.0 18.7 c 704
2004-04-17 04:43:26 C 11 29 17.38 +00 30 59.1 18.3 c 704
2004-04-17 04:43:36 C 11 29 17.39 +00 31 00.3 18.1 c 704
2004-04-17 04:57:49 C 11 29 12.85 +00 32 31.4 18.4 c 704
2004-04-17 04:58:54 C 11 29 12.50 +00 32 38.2 18.6 c 704
2004-04-17 04:59:03 C 11 29 12.45 +00 32 39.2 18.4 c 704
2004-04-17 05:10:16 C 11 29 09.04 +00 33 52.4 c 926
2004-04-17 05:11:04 C 11 29 08.82 +00 33 56.8 c 926
2004-04-17 05:11:50 C 11 29 08.56 +00 34 02.6 c 926
2004-04-17 05:13:14 C 11 29 07.95 +00 34 09.7 18.2 c 704
2004-04-17 05:14:22 C 11 29 07.57 +00 34 16.9 18.4 c 704
2004-04-17 05:14:31 C 11 29 07.54 +00 34 17.6 18.2 c 704