2212 Hephaistos (1978 SB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8346603000
Semi-major axis (a)2.1675877000 AU
Inclination (i)11.20255000°
Long. of Asc. Node (Ω)26.56556000°
Arg. of Perihelion (ω)210.46301000°
Mean Anomaly (M)308.24302000°
Mean Motion (n)0.3088439100°/day
Perihelion dist (q)0.35838830 AU
Aphelion dist (Q)3.97678710 AU
Orbital Period3.19128080 yr
Physical Parameters
H (abs. magnitude)13.45
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.730″
Uncertainty0
Orbit TypeApollo
MOID0.111922 AU
Observations Used4548
Oppositions39
Arc Total1978-2026
First Observation Used
Last Observation Used2026-03-22
Observations (4672)
Date Type RA Dec Mag Band Observatory
2007-10-31 19:46:10 C 01 50 25.94 +12 57 41.7 c 097
2007-10-31 20:20:36 C 01 50 23.75 +12 57 32.4 c 097
2007-10-31 20:54:29 C 01 50 21.59 +12 57 23.7 c 097
2007-10-31 20:58:46 C 01 50 21.47 +12 57 21.2 c A24
2007-10-31 21:00:12 C 01 50 21.38 +12 57 20.8 c A24
2007-10-31 21:16:08 C 01 50 20.37 +12 57 16.6 c A24
2007-10-31 21:28:36 C 01 50 19.43 +12 57 14.3 c 097
2007-10-31 21:33:31 C 01 50 19.26 +12 57 12.0 c A24
2007-10-31 21:49:26 C 01 50 18.28 +12 57 07.7 c A24
2007-10-31 21:50:54 C 01 50 18.16 +12 57 07.4 c A24
2007-10-31 22:02:39 C 01 50 17.35 +12 57 03.1 r 084
2007-10-31 22:04:46 C 01 50 17.29 +12 57 03.7 c A24
2007-10-31 22:06:52 C 01 50 17.05 +12 57 01.8 r 084
2007-10-31 22:20:06 C 01 50 16.32 +12 56 59.6 c A24
2007-10-31 22:33:56 C 01 50 15.43 +12 56 55.9 c A24
2007-10-31 22:35:28 C 01 50 15.35 +12 56 55.3 c A24
2007-11-01 05:18:38 C 01 49 50.37 +12 55 08.2 r G96
2007-11-01 05:26:45 C 01 49 49.87 +12 55 06.1 r G96
2007-11-01 05:43:04 C 01 49 48.82 +12 55 01.8 r G96
2007-11-01 09:14:32 C 01 49 35.31 +12 54 04.9 19.2 c 704
2007-11-01 09:31:49 C 01 49 34.35 +12 54 00.9 17.8 c 704
2007-11-01 09:49:07 C 01 49 33.30 +12 53 56.4 18.1 c 704
2007-11-01 10:06:26 C 01 49 32.25 +12 53 51.4 18.6 c 704
2007-11-01 20:27:04 C 01 48 54.30 +12 51 05.4 c 246
2007-11-01 20:28:13 C 01 48 54.25 +12 51 05.2 c 246
2007-11-01 20:29:23 C 01 48 54.17 +12 51 04.9 c 246
2007-11-01 20:30:28 C 01 48 54.10 +12 51 04.7 c 246
2007-11-01 20:31:48 C 01 48 54.02 +12 51 04.3 c 246
2007-11-01 20:32:59 C 01 48 53.94 +12 51 03.8 c 246
2007-11-01 23:17:03 C 01 48 43.74 +12 50 20.7 c A24
2007-11-01 23:18:29 C 01 48 43.64 +12 50 20.2 c A24
2007-11-01 23:32:57 C 01 48 42.73 +12 50 16.5 c A24
2007-11-01 23:48:52 C 01 48 41.73 +12 50 12.2 c A24
2007-11-02 00:03:21 C 01 48 40.81 +12 50 08.5 c A24
2007-11-02 00:04:47 C 01 48 40.72 +12 50 08.0 c A24
2007-11-02 23:48:51 C 01 47 14.21 +12 43 52.1 c A24
2007-11-02 23:50:18 C 01 47 14.13 +12 43 51.8 c A24
2007-11-03 00:04:49 C 01 47 13.24 +12 43 47.9 c A24
2007-11-03 00:20:46 C 01 47 12.26 +12 43 43.6 c A24
2007-11-03 00:35:17 C 01 47 11.38 +12 43 39.9 c A24
2007-11-03 00:36:44 C 01 47 11.28 +12 43 39.3 c A24
2007-11-03 07:17:30 C 01 46 47.23 +12 41 55.1 w 699
2007-11-03 07:49:06 C 01 46 45.30 +12 41 46.8 w 699
2007-11-03 08:20:42 C 01 46 43.39 +12 41 38.0 w 699
2007-11-03 08:52:17 C 01 46 41.46 +12 41 30.1 w 699
2007-11-03 22:42:34 C 01 45 52.09 +12 37 53.0 c A24
2007-11-03 22:44:00 C 01 45 52.04 +12 37 52.3 c A24
2007-11-03 22:58:39 C 01 45 51.13 +12 37 48.7 c A24
2007-11-03 23:14:43 C 01 45 50.17 +12 37 44.3 c A24
2007-11-03 23:29:22 C 01 45 49.25 +12 37 40.4 c A24