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
2011-04-26 04:53:57 C 10 20 06.56 +13 55 36.7 19.3 c 704
2011-04-26 05:09:28 C 10 20 03.74 +13 56 37.7 19.4 c 704
2011-04-26 05:24:57 C 10 20 01.01 +13 57 41.0 18.8 c 704
2011-04-26 05:40:31 C 10 19 58.30 +13 58 43.5 18.6 c 704
2011-04-30 21:15:11 C 10 02 39.75 +20 40 37.1 c A24
2011-04-30 21:16:16 C 10 02 39.60 +20 40 40.3 c A24
2011-04-30 21:17:21 C 10 02 39.42 +20 40 45.6 c A24
2013-02-15 06:12:09 C 11 00 00.61 -80 28 47.7 u 807
2013-02-15 06:17:29 C 10 59 56.19 -80 28 39.6 u 807
2013-02-15 06:22:51 C 10 59 51.73 -80 28 31.6 u 807
2013-02-15 06:28:10 C 10 59 47.27 -80 28 23.9 u 807
2013-02-15 06:33:30 C 10 59 42.90 -80 28 16.1 u 807
2018-04-05 09:28:02 C 11 40 49.33 -25 56 51.8 U T05
2018-04-05 09:47:46 C 11 40 44.24 -25 55 29.2 U T05
2018-04-05 09:50:25 C 11 40 43.60 -25 55 17.7 U T05
2018-04-05 10:01:39 C 11 40 40.64 -25 54 30.6 U T05
2018-04-05 10:06:15 C 11 40 39.46 -25 54 10.5 U T05
2018-04-05 10:10:50 C 11 40 38.25 -25 53 51.6 U T05
2018-04-05 10:15:27 C 11 40 37.07 -25 53 31.9 U T05
2018-04-08 06:04:28 C 11 24 10.69 -20 54 59.0 U 703
2018-04-08 06:12:05 C 11 24 08.83 -20 54 24.2 U 703
2018-04-08 06:19:42 C 11 24 06.93 -20 53 49.4 U 703
2018-04-08 06:27:19 C 11 24 05.09 -20 53 13.9 U 703
2018-04-11 05:46:38 C 11 07 50.15 -15 17 59.2 U 703
2018-04-11 05:54:14 C 11 07 48.46 -15 17 23.0 U 703
2018-04-11 06:01:50 C 11 07 46.66 -15 16 46.9 U 703
2018-04-11 06:09:26 C 11 07 44.99 -15 16 10.4 U 703
2018-04-12 10:03:03 C 11 01 44.46 -13 02 08.6 U T08
2018-04-12 10:23:39 C 11 01 39.89 -13 00 29.5 U T08
2018-04-12 10:39:31 C 11 01 36.41 -12 59 12.2 U T08
2018-04-12 10:49:05 C 11 01 34.38 -12 58 25.2 U T08
2018-04-12 10:54:45 C 11 01 33.11 -12 57 58.6 U T08
2018-04-13 08:53:49 C 10 57 00.04 -11 12 18.9 U T05
2018-04-13 09:06:27 C 10 56 57.33 -11 11 18.0 U T05
2018-04-13 09:19:47 C 10 56 54.48 -11 10 14.0 U T05
2018-04-14 05:44:04 C 10 52 48.12 -09 32 33.1 U 703
2018-04-14 05:52:13 C 10 52 46.39 -09 31 53.3 U 703
2018-04-14 06:00:23 C 10 52 44.71 -09 31 14.2 U 703
2018-04-14 06:08:32 C 10 52 43.03 -09 30 35.5 U 703
2018-04-18 05:08:33 C 10 35 14.67 -02 08 26.1 U 703
2018-04-18 05:16:09 C 10 35 13.31 -02 07 52.1 U 703
2018-04-18 05:23:44 C 10 35 11.94 -02 07 17.8 U 703
2018-04-18 05:31:19 C 10 35 10.64 -02 06 43.8 U 703
2018-04-21 04:13:35 C 10 23 57.64 +02 57 57.8 U G96
2018-04-21 04:21:42 C 10 23 56.37 +02 58 31.2 U G96
2018-04-21 04:29:49 C 10 23 55.11 +02 59 04.8 U G96
2018-04-21 04:37:56 C 10 23 53.84 +02 59 38.3 U G96
2018-04-21 04:39:05 C 10 23 53.65 +02 59 43.2 U 703
2018-04-21 04:47:17 C 10 23 52.37 +03 00 16.9 U 703
2018-04-21 04:55:31 C 10 23 51.06 +03 00 51.0 U 703