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
2010-10-16 19:10:12 C 01 18 52.68 +05 28 39.8 o 300
2010-10-17 07:57:51 C 01 17 43.60 +05 24 40.3 568
2010-10-17 08:18:15 C 01 17 41.72 +05 24 33.9 568
2010-10-30 04:37:50 C 00 54 10.00 +04 05 47.8 r 703
2010-10-30 04:49:15 C 00 54 09.25 +04 05 45.8 r 703
2010-10-30 05:00:46 C 00 54 08.53 +04 05 43.4 r 703
2010-10-30 05:12:17 C 00 54 07.81 +04 05 40.9 r 703
2010-10-30 07:55:06 C 00 53 57.42 +04 05 10.0 16.6 c 704
2010-10-30 08:12:54 C 00 53 56.29 +04 05 06.5 16.8 c 704
2010-10-30 08:30:40 C 00 53 55.18 +04 05 03.2 16.8 c 704
2010-10-30 08:49:31 C 00 53 54.00 +04 04 59.3 16.8 c 704
2010-10-30 09:07:18 C 00 53 52.89 +04 04 55.3 16.7 c 704
2010-10-31 03:49:33 C 00 52 45.26 +04 01 21.8 r G96
2010-10-31 03:59:28 C 00 52 44.65 +04 01 20.0 r G96
2010-10-31 04:09:19 C 00 52 44.04 +04 01 18.1 r G96
2010-10-31 04:19:19 C 00 52 43.42 +04 01 16.3 r G96
2010-11-01 14:28:48 C 00 50 43.74 +03 55 08.4 u 379
2010-11-01 14:40:49 C 00 50 43.07 +03 55 06.4 u 379
2010-11-01 14:43:28 C 00 50 42.88 +03 55 05.9 u 379
2010-11-01 14:52:48 C 00 50 42.39 +03 55 04.5 u 379
2010-11-01 17:05:38 C 00 50 35.27 +03 54 40.6 o B17
2010-11-01 17:19:32 C 00 50 34.46 +03 54 38.3 o B17
2010-11-01 17:34:32 C 00 50 33.60 +03 54 35.7 o B17
2010-11-01 17:49:32 C 00 50 32.73 +03 54 33.2 o B17
2010-11-01 18:04:32 C 00 50 31.86 +03 54 30.6 o B17
2010-11-01 18:19:32 C 00 50 31.00 +03 54 28.1 o B17
2010-11-01 18:34:32 C 00 50 30.13 +03 54 25.5 o B17
2010-11-01 18:49:32 C 00 50 29.26 +03 54 23.0 o B17
2010-11-03 02:50:20 C 00 48 44.13 +03 49 08.2 r 703
2010-11-03 02:57:47 C 00 48 43.70 +03 49 07.1 r 703
2010-11-03 03:05:07 C 00 48 43.30 +03 49 06.1 r 703
2010-11-03 03:12:30 C 00 48 42.91 +03 49 04.8 r 703
2010-11-03 04:45:14 C 00 48 37.79 +03 48 50.4 16.8 c 704
2010-11-03 05:03:07 C 00 48 36.81 +03 48 47.5 16.8 c 704
2010-11-03 05:21:00 C 00 48 35.83 +03 48 44.8 16.9 c 704
2010-11-03 05:38:50 C 00 48 34.85 +03 48 41.9 16.7 c 704
2010-11-03 05:57:02 C 00 48 33.86 +03 48 39.0 17.1 c 704
2010-11-04 05:58:15 C 00 47 18.84 +03 45 00.0 16.7 c 704
2010-11-04 06:16:24 C 00 47 17.89 +03 44 57.4 17.2 c 704
2010-11-04 06:34:28 C 00 47 16.94 +03 44 54.9 17.5 c 704
2010-11-04 06:52:35 C 00 47 16.00 +03 44 52.1 17.1 c 704
2010-11-04 07:10:41 C 00 47 15.03 +03 44 49.4 17.2 c 704
2010-11-04 13:05:33 C 00 46 57.30 +03 43 58.2 u 379
2010-11-04 13:08:13 C 00 46 57.15 +03 43 57.4 u 379
2010-11-04 13:16:34 C 00 46 56.71 +03 43 56.3 u 379
2010-11-04 13:19:14 C 00 46 56.59 +03 43 55.5 u 379
2010-11-04 13:27:33 C 00 46 56.14 +03 43 54.5 u 379
2010-11-04 13:30:13 C 00 46 56.03 +03 43 54.1 u 379
2010-11-04 20:22:43 C 00 46 35.58 +03 42 54.3 u 160
2010-11-04 20:25:48 C 00 46 35.42 +03 42 54.1 u 160