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
2018-04-21 05:03:43 C 10 23 49.84 +03 01 24.2 U 703
2018-05-04 04:50:38 C 09 49 45.08 +19 53 09.9 U 703
2018-05-04 05:05:45 C 09 49 43.73 +19 53 46.7 U 703
2018-05-04 05:13:18 C 09 49 43.20 +19 54 05.5 U 703
2018-05-08 03:18:48 C 09 43 06.67 +23 27 15.1 U G96
2018-05-08 03:26:18 C 09 43 06.13 +23 27 30.8 U G96
2018-05-08 03:33:48 C 09 43 05.62 +23 27 46.7 U G96
2018-05-08 03:41:18 C 09 43 05.07 +23 28 02.1 U G96
2023-02-21 08:30:26 C 15 51 39.60 -32 01 01.5 V 807
2023-02-21 08:35:45 C 15 51 40.07 -32 01 00.5 V 807
2023-02-21 08:40:49 C 15 51 40.61 -32 00 59.5 V 807
2025-03-28 22:28:48 C 11 49 35.638 -35 53 50.53 V M22
2025-03-28 22:33:22 C 11 49 34.488 -35 53 36.60 V M22
2025-03-28 22:41:11 C 11 49 32.422 -35 53 12.80 V M22
2025-03-28 23:26:47 C 11 49 21.034 -35 50 45.56 V M22
2025-03-29 21:52:22 C 11 43 55.529 -34 37 38.71 V M22
2025-03-29 21:57:11 C 11 43 54.281 -34 37 21.86 V M22
2025-03-29 22:40:27 C 11 43 43.517 -34 34 57.32 V M22
2025-03-29 22:48:04 C 11 43 41.580 -34 34 31.48 V M22
2025-03-31 04:24:02 C 11 36 36.468 -32 52 27.19 V W68
2025-03-31 04:32:48 C 11 36 34.334 -32 51 55.94 V W68
2025-03-31 05:23:57 C 11 36 21.751 -32 48 53.42 V W68
2025-04-01 03:57:56 C 11 31 03.362 -31 27 00.50 V W68
2025-04-01 04:03:45 C 11 31 02.045 -31 26 39.26 V W68
2025-04-01 04:08:32 C 11 31 00.845 -31 26 21.37 V W68
2025-04-01 04:13:13 C 11 30 59.714 -31 26 04.06 V W68
2025-04-01 04:22:35 C 11 30 57.439 -31 25 28.92 V W68
2025-04-01 04:25:53 C 11 30 56.659 -31 25 17.04 V W68
2025-04-01 05:10:16 C 11 30 45.878 -31 22 30.94 V W68
2025-04-02 21:24:56 C 11 21 31.889 -28 48 29.81 V M22
2025-04-02 21:30:13 C 11 21 30.737 -28 48 08.50 V M22
2025-04-02 21:38:03 C 11 21 28.786 -28 47 37.50 V M22
2025-04-02 21:53:17 C 11 21 25.298 -28 46 38.06 V M22
2025-04-22 22:02:24 C 10 04 40.030 +04 01 15.38 V R17
2025-04-22 22:22:58 C 10 04 37.925 +04 02 25.04 V R17
2025-04-22 22:43:30 C 10 04 35.861 +04 03 34.31 V R17
2025-04-22 23:04:03 C 10 04 33.828 +04 04 43.93 V R17
2025-04-25 04:52:49 C 09 59 48.430 +06 58 56.35 V G96
2025-04-25 05:00:15 C 09 59 47.749 +06 59 19.64 V G96
2025-04-25 05:07:43 C 09 59 47.076 +06 59 42.79 V G96
2025-04-25 05:15:11 C 09 59 46.460 +07 00 05.40 V G96
2025-04-26 21:01:10 C 09 56 40.159 +08 59 53.52 V R17
2025-04-26 21:21:42 C 09 56 38.482 +09 00 53.86 V R17
2025-04-26 21:42:14 C 09 56 36.823 +09 01 53.62 V R17
2025-04-26 22:02:46 C 09 56 35.191 +09 02 53.63 V R17