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
2004-04-17 05:29:36 C 11 29 02.74 +00 35 53.8 18.7 c 704
2004-04-17 05:29:45 C 11 29 02.64 +00 35 55.2 18.3 c 704
2004-04-17 05:29:54 C 11 29 02.65 +00 35 56.1 18.2 c 704
2004-04-17 06:26:24 C 11 28 44.26 +00 41 52.8 r 649
2004-04-17 06:27:46 C 11 28 43.85 +00 42 01.3 r 649
2004-04-17 06:29:50 C 11 28 43.16 +00 42 14.9 r 649
2004-04-17 06:31:52 C 11 28 42.54 +00 42 27.8 r 649
2004-04-17 06:46:14 C 11 28 38.31 +00 44 03.9 o H06
2004-04-17 06:47:49 C 11 28 37.82 +00 44 13.3 o H06
2004-04-17 06:49:24 C 11 28 37.28 +00 44 24.6 o H06
2004-04-17 07:29:45 C 11 28 24.49 +00 48 42.8 c 711
2004-04-17 07:34:08 C 11 28 23.09 +00 49 10.5 c 711
2004-04-17 07:38:28 C 11 28 21.74 +00 49 37.7 c 711
2004-04-18 10:18:20 C 11 20 18.07 +03 39 32.6 r 474
2004-04-18 10:23:00 C 11 20 16.60 +03 40 01.8 r 474
2004-04-18 10:29:49 C 11 20 14.47 +03 40 45.1 r 474
2004-04-19 00:37:49 C 11 15 59.71 +05 07 52.0 r J95
2004-04-19 00:42:33 C 11 15 58.28 +05 08 21.1 r J95
2004-04-19 00:47:21 C 11 15 56.82 +05 08 51.0 r J95
2004-04-19 04:32:00 C 11 14 51.66 +05 32 16.3 17.4 c 704
2004-04-19 04:48:00 C 11 14 46.74 +05 33 55.3 17.7 c 704
2004-04-19 05:04:14 C 11 14 41.75 +05 35 35.9 17.5 c 704
2004-04-19 05:20:10 C 11 14 36.84 +05 37 14.4 17.8 c 704
2004-04-19 05:36:06 C 11 14 31.97 +05 38 52.9 18.1 c 704
2004-04-19 06:32:51 C 11 14 14.67 +05 44 44.7 c 926
2004-04-19 06:33:48 C 11 14 14.35 +05 44 50.5 c 926
2004-04-19 06:34:48 C 11 14 14.07 +05 44 56.4 c 926
2004-04-19 19:45:08 C 11 10 23.63 +07 05 35.6 r 170
2004-04-19 19:46:12 C 11 10 23.32 +07 05 42.2 r 170
2004-04-19 19:47:15 C 11 10 22.99 +07 05 48.7 r 170
2004-04-19 19:52:25 C 11 10 21.45 +07 06 19.7 r 170
2004-04-19 21:11:20 C 11 09 57.37 +07 14 15.3 012
2004-04-19 21:13:01 C 11 09 56.99 +07 14 23.7 012
2004-04-19 21:16:20 C 11 09 55.92 +07 14 44.9 012
2004-04-19 21:18:00 C 11 09 55.47 +07 14 55.4 012
2004-04-19 21:19:41 C 11 09 54.98 +07 15 05.5 012
2004-04-19 21:21:22 C 11 09 54.47 +07 15 15.5 012
2004-04-19 21:24:41 C 11 09 53.49 +07 15 35.0 012
2004-04-19 21:26:22 C 11 09 52.96 +07 15 45.8 012
2004-04-20 10:47:48 C 11 06 00.96 +08 37 17.9 r E14
2004-04-20 10:55:23 C 11 05 58.67 +08 38 03.3 r E14
2004-04-20 11:02:53 C 11 05 56.45 +08 38 48.5 r E14
2004-04-21 09:12:41 C 10 59 38.46 +10 49 04.9 r E14
2004-04-21 09:17:08 C 10 59 37.21 +10 49 31.4 r E14
2004-04-21 09:21:35 C 10 59 35.85 +10 49 56.7 r E14
2004-04-21 19:29:44 C 10 56 44.87 +11 47 05.3 r 151
2004-04-21 19:32:24 C 10 56 44.08 +11 47 20.3 r 151
2004-04-21 19:33:44 C 10 56 43.66 +11 47 27.9 r 151
2004-04-21 19:34:30 C 10 56 43.43 +11 47 32.4 r 151
2004-04-22 04:47:54 C 10 54 09.13 +12 39 44.8 19.1 c 704