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
2010-11-04 20:28:53 C 00 46 35.25 +03 42 53.6 u 160
2010-11-05 13:40:54 C 00 45 44.65 +03 40 31.9 u 379
2010-11-05 13:43:34 C 00 45 44.51 +03 40 31.6 u 379
2010-11-05 13:46:14 C 00 45 44.39 +03 40 31.4 u 379
2010-11-05 13:54:33 C 00 45 43.99 +03 40 30.3 u 379
2010-11-05 14:05:34 C 00 45 43.42 +03 40 28.8 u 379
2010-11-05 14:08:13 C 00 45 43.32 +03 40 28.5 u 379
2010-11-05 19:54:36 C 00 45 27.01 +03 39 41.7 u 160
2010-11-05 19:57:59 C 00 45 26.83 +03 39 41.1 u 160
2010-11-05 20:00:55 C 00 45 26.72 +03 39 40.6 u 160
2010-11-06 12:22:52 C 00 44 40.58 +03 37 34.6 u 379
2010-11-06 12:28:12 C 00 44 40.36 +03 37 34.5 u 379
2010-11-06 12:36:35 C 00 44 39.93 +03 37 33.0 u 379
2010-11-06 12:39:15 C 00 44 39.82 +03 37 32.8 u 379
2010-11-06 18:09:41 C 00 44 24.78 +03 36 50.9 o B17
2010-11-06 18:39:32 C 00 44 23.38 +03 36 47.3 o B17
2010-11-06 18:54:36 C 00 44 22.67 +03 36 45.4 o B17
2010-11-06 19:10:09 C 00 44 21.94 +03 36 43.5 o B17
2010-11-06 19:24:33 C 00 44 21.27 +03 36 41.7 o B17
2010-11-09 14:22:54 C 00 41 29.83 +03 29 21.2 u 379
2010-11-09 14:28:14 C 00 41 29.60 +03 29 20.3 u 379
2010-11-10 12:43:56 C 00 40 37.82 +03 27 16.4 u 379
2010-11-10 13:08:13 C 00 40 36.87 +03 27 14.0 u 379
2010-11-10 13:24:54 C 00 40 36.22 +03 27 12.6 u 379
2010-11-11 12:14:05 C 00 39 45.73 +03 25 17.7 u 379
2010-11-11 12:39:35 C 00 39 44.79 +03 25 15.8 u 379
2010-11-11 12:42:17 C 00 39 44.69 +03 25 15.9 u 379
2010-11-11 12:45:01 C 00 39 44.60 +03 25 15.2 u 379
2010-12-29 01:39:27 C 00 37 26.43 +04 54 34.4 r 703
2010-12-29 01:47:40 C 00 37 26.61 +04 54 35.7 r 703
2010-12-29 01:55:47 C 00 37 26.76 +04 54 38.0 r 703
2010-12-29 02:04:01 C 00 37 26.94 +04 54 39.3 r 703
2011-01-05 01:51:54 C 00 41 25.81 +05 28 11.7 19.0 c 704
2011-01-05 02:11:06 C 00 41 26.28 +05 28 16.1 18.7 c 704
2011-01-05 02:30:12 C 00 41 26.74 +05 28 21.1 19.3 c 704
2011-01-05 02:49:03 C 00 41 27.22 +05 28 24.5 19.3 c 704
2011-01-05 03:07:48 C 00 41 27.69 +05 28 28.8 19.3 c 704
2011-01-15 03:50:45 C 00 48 17.20 +06 21 49.1 r 703
2011-01-15 04:01:10 C 00 48 17.49 +06 21 49.8 r 703
2011-01-15 04:11:39 C 00 48 17.74 +06 21 52.5 r 703
2011-01-15 04:22:04 C 00 48 18.00 +06 21 55.3 r 703
2011-01-24 02:39:21 C 00 55 15.45 +07 13 20.4 r G96
2011-01-24 02:46:01 C 00 55 15.67 +07 13 22.0 r G96
2011-01-24 02:52:35 C 00 55 15.92 +07 13 23.8 r G96
2011-01-24 02:59:18 C 00 55 16.14 +07 13 25.3 r G96
2011-01-27 01:54:12 C 00 57 43.47 +07 31 06.3 19.5 c 704
2011-01-27 02:13:01 C 00 57 44.07 +07 31 09.4 19.9 c 704
2011-01-27 02:32:27 C 00 57 44.81 +07 31 14.2 19.9 c 704
2011-01-27 02:51:23 C 00 57 45.42 +07 31 20.4 20.1 c 704
2011-01-30 02:03:52 C 01 00 17.44 +07 49 20.6 19.0 c 704