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
2010-10-05 18:51:29 C 01 45 36.24 +07 00 44.9 u 379
2010-10-05 18:58:08 C 01 45 35.51 +07 00 42.7 u 379
2010-10-05 19:00:48 C 01 45 35.21 +07 00 41.7 u 379
2010-10-05 19:03:29 C 01 45 34.91 +07 00 40.7 u 379
2010-10-07 06:54:47 C 01 41 42.55 +06 47 25.9 15.9 c 704
2010-10-07 07:13:42 C 01 41 40.49 +06 47 18.1 16.0 c 704
2010-10-07 07:32:41 C 01 41 38.44 +06 47 11.5 16.1 c 704
2010-10-07 07:51:41 C 01 41 36.33 +06 47 04.3 16.0 c 704
2010-10-07 08:10:43 C 01 41 34.26 +06 46 57.7 16.2 c 704
2010-10-08 06:54:09 C 01 39 08.89 +06 38 38.6 15.2 c 704
2010-10-08 07:13:11 C 01 39 06.83 +06 38 31.8 15.4 c 704
2010-10-08 07:32:17 C 01 39 04.76 +06 38 24.8 15.6 c 704
2010-10-08 07:51:25 C 01 39 02.68 +06 38 17.7 15.7 c 704
2010-10-08 08:10:33 C 01 39 00.61 +06 38 10.7 15.5 c 704
2010-10-08 08:56:34 C 01 38 55.70 +06 37 54.3 o 691
2010-10-08 09:18:19 C 01 38 53.34 +06 37 46.3 o 691
2010-10-08 09:40:02 C 01 38 51.00 +06 37 38.4 o 691
2010-10-10 20:13:25 C 01 32 45.63 +06 16 34.9 w J93
2010-10-10 20:17:31 C 01 32 45.21 +06 16 33.2 w J93
2010-10-10 20:19:33 C 01 32 45.00 +06 16 32.3 w J93
2010-10-12 07:21:31 C 01 29 12.26 +06 04 20.3 r G96
2010-10-12 07:31:16 C 01 29 11.25 +06 04 17.0 r G96
2010-10-12 07:41:08 C 01 29 10.24 +06 04 13.5 r G96
2010-10-12 07:50:53 C 01 29 09.24 +06 04 10.2 r G96
2010-10-12 08:04:33 C 01 29 07.83 +06 04 05.9 o 691
2010-10-12 08:30:02 C 01 29 05.23 +06 03 57.0 o 691
2010-10-12 08:55:28 C 01 29 02.64 +06 03 48.2 o 691
2010-10-12 09:17:07 C 01 29 00.45 +06 03 40.7 o 691
2010-10-12 09:42:34 C 01 28 57.87 +06 03 31.9 o 691
2010-10-12 10:08:02 C 01 28 55.28 +06 03 23.0 o 691
2010-10-14 19:09:21 C 01 23 22.21 +05 44 07.2 o B17
2010-10-14 19:28:33 C 01 23 20.35 +05 44 00.9 o B17
2010-10-14 19:47:36 C 01 23 18.51 +05 43 54.6 o B17
2010-10-14 20:08:31 C 01 23 16.49 +05 43 47.7 o B17
2010-10-14 20:28:44 C 01 23 14.53 +05 43 41.0 o B17
2010-10-14 20:48:32 C 01 23 12.62 +05 43 34.4 o B17
2010-10-14 21:10:44 C 01 23 10.47 +05 43 27.1 o B17
2010-10-14 21:28:34 C 01 23 08.75 +05 43 21.2 o B17
2010-10-15 19:08:11 C 01 21 05.93 +05 36 19.7 o 300
2010-10-15 19:10:29 C 01 21 05.66 +05 36 19.3 o 300
2010-10-15 19:12:46 C 01 21 05.45 +05 36 18.7 o 300
2010-10-15 19:15:04 C 01 21 05.26 +05 36 17.5 o 300
2010-10-15 19:19:38 C 01 21 04.84 +05 36 15.8 o 300
2010-10-16 14:09:17 C 01 19 20.82 +05 30 14.0 r D29
2010-10-16 14:30:52 C 01 19 18.81 +05 30 07.2 r D29
2010-10-16 14:54:56 C 01 19 16.55 +05 29 59.6 r D29
2010-10-16 15:14:29 C 01 19 14.72 +05 29 53.3 r D29
2010-10-16 18:58:45 C 01 18 53.75 +05 28 42.4 o 300
2010-10-16 19:03:19 C 01 18 53.36 +05 28 41.9 o 300
2010-10-16 19:05:37 C 01 18 53.13 +05 28 41.2 o 300