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
2010-09-11 23:41:54 C 02 48 22.25 +10 15 58.7 w I99
2010-09-12 02:08:13 C 02 48 07.35 +10 15 19.3 u 160
2010-09-12 02:10:31 C 02 48 07.11 +10 15 19.0 u 160
2010-09-12 02:12:49 C 02 48 06.87 +10 15 18.2 u 160
2010-09-12 18:11:50 C 02 46 31.00 +10 11 00.4 u 379
2010-09-12 18:26:29 C 02 46 29.47 +10 10 56.5 u 379
2010-09-12 18:33:08 C 02 46 28.78 +10 10 54.7 u 379
2010-09-12 18:35:48 C 02 46 28.50 +10 10 53.9 u 379
2010-09-12 18:38:28 C 02 46 28.26 +10 10 53.5 u 379
2010-09-12 18:45:10 C 02 46 27.56 +10 10 51.6 u 379
2010-09-12 18:47:50 C 02 46 27.27 +10 10 50.7 u 379
2010-09-12 18:50:30 C 02 46 27.02 +10 10 49.8 u 379
2010-09-12 22:50:48 C 02 46 03.17 +10 09 42.5 o B17
2010-09-12 23:02:31 C 02 46 01.97 +10 09 39.3 o B17
2010-09-12 23:14:32 C 02 46 00.73 +10 09 36.0 o B17
2010-09-12 23:26:33 C 02 45 59.49 +10 09 32.7 o B17
2010-09-12 23:40:10 C 02 45 58.09 +10 09 29.0 o B17
2010-09-13 00:02:32 C 02 45 55.79 +10 09 22.9 o B17
2010-09-13 01:05:21 C 02 45 49.53 +10 09 05.2 u 160
2010-09-13 01:07:34 C 02 45 49.30 +10 09 04.7 u 160
2010-09-13 01:09:52 C 02 45 49.06 +10 09 04.2 u 160
2010-09-14 22:40:46 C 02 41 09.27 +09 56 07.0 o A50
2010-09-14 23:00:51 C 02 41 07.16 +09 56 01.1 o A50
2010-09-14 23:20:55 C 02 41 05.05 +09 55 55.3 o A50
2010-09-15 10:11:19 C 02 39 57.06 +09 52 46.4 r 703
2010-09-15 10:22:03 C 02 39 55.90 +09 52 43.1 r 703
2010-09-15 10:32:44 C 02 39 54.79 +09 52 39.8 r 703
2010-09-15 10:43:33 C 02 39 53.64 +09 52 36.6 r 703
2010-09-16 18:07:10 C 02 36 34.75 +09 43 08.1 u 379
2010-09-16 18:09:50 C 02 36 34.46 +09 43 07.3 u 379
2010-09-16 18:12:29 C 02 36 34.15 +09 43 06.0 u 379
2010-09-16 18:19:09 C 02 36 33.43 +09 43 04.0 u 379
2010-09-16 18:21:48 C 02 36 33.15 +09 43 03.2 u 379
2010-09-16 18:24:28 C 02 36 32.85 +09 43 02.4 u 379
2010-09-17 00:49:03 C 02 35 52.19 +09 41 01.5 v J93
2010-09-17 00:53:09 C 02 35 51.75 +09 40 59.9 v J93
2010-09-17 00:57:15 C 02 35 51.30 +09 40 59.0 v J93
2010-09-17 07:49:22 C 02 35 07.13 +09 38 53.6 u H47
2010-09-17 07:52:14 C 02 35 06.83 +09 38 52.9 u H47
2010-09-17 07:55:24 C 02 35 06.49 +09 38 51.8 u H47
2010-09-18 15:12:16 C 02 31 44.04 +09 28 58.1 o 300
2010-09-18 15:13:52 C 02 31 43.88 +09 28 57.3 o 300
2010-09-18 15:15:27 C 02 31 43.71 +09 28 56.7 o 300
2010-09-18 15:17:02 C 02 31 43.50 +09 28 56.5 o 300
2010-09-18 15:17:50 C 02 31 43.40 +09 28 56.0 o 300
2010-09-20 01:04:16 C 02 28 01.49 +09 17 53.1 u 160
2010-09-20 01:05:44 C 02 28 01.31 +09 17 53.0 u 160
2010-09-20 01:07:11 C 02 28 01.15 +09 17 52.4 u 160
2010-09-23 00:10:35 C 02 20 06.56 +08 53 41.4 u 160
2010-09-23 00:12:48 C 02 20 06.31 +08 53 41.0 u 160