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
2007-11-03 23:30:47 C 01 45 49.20 +12 37 40.3 c A24
2007-11-04 21:59:27 C 01 44 29.88 +12 31 49.9 r 084
2007-11-04 22:03:40 C 01 44 29.70 +12 31 48.4 r 084
2007-11-05 00:04:18 C 01 44 22.57 +12 31 19.3 c A24
2007-11-05 00:05:44 C 01 44 22.52 +12 31 18.9 c A24
2007-11-05 18:55:58 C 01 43 17.39 +12 26 28.4 r 084
2007-11-05 19:00:11 C 01 43 17.14 +12 26 27.4 r 084
2007-11-06 04:45:25 C 01 42 43.76 +12 24 01.0 17.8 c 704
2007-11-06 05:02:36 C 01 42 42.73 +12 23 56.6 18.2 c 704
2007-11-06 05:19:48 C 01 42 41.74 +12 23 52.4 17.9 c 704
2007-11-06 05:37:06 C 01 42 40.75 +12 23 47.9 18.0 c 704
2007-11-06 05:54:17 C 01 42 39.75 +12 23 43.7 17.7 c 704
2007-11-07 22:54:17 C 01 40 22.16 +12 13 28.2 c A24
2007-11-07 22:55:43 C 01 40 22.09 +12 13 27.7 c A24
2007-11-07 23:12:22 C 01 40 21.15 +12 13 23.7 c A24
2007-11-07 23:30:28 C 01 40 20.15 +12 13 19.2 c A24
2007-11-07 23:47:08 C 01 40 19.22 +12 13 15.2 c A24
2007-11-07 23:48:35 C 01 40 19.12 +12 13 14.7 c A24
2007-11-09 23:23:22 C 01 37 45.84 +12 01 42.8 c A24
2007-11-09 23:24:50 C 01 37 45.81 +12 01 42.2 c A24
2007-11-10 22:12:10 C 01 36 34.89 +11 56 19.8 c A24
2007-11-10 22:13:37 C 01 36 34.82 +11 56 19.6 c A24
2007-11-11 00:12:12 C 01 36 28.71 +11 55 52.7 r J46
2007-11-11 00:28:15 C 01 36 27.86 +11 55 48.9 r J46
2007-11-11 00:39:22 C 01 36 27.27 +11 55 46.4 r J46
2007-11-11 20:39:59 C 01 35 26.60 +11 51 07.5 c A24
2007-11-11 20:41:23 C 01 35 26.54 +11 51 07.6 c A24
2007-11-11 21:07:09 C 01 35 25.23 +11 51 01.5 c A24
2007-11-11 21:34:19 C 01 35 23.80 +11 50 55.0 c A24
2007-11-11 22:00:05 C 01 35 22.53 +11 50 49.6 c A24
2007-11-11 22:01:31 C 01 35 22.41 +11 50 48.8 c A24
2007-11-11 22:27:59 C 01 35 21.04 +11 50 42.6 c A24
2007-11-11 22:29:25 C 01 35 20.98 +11 50 42.9 c A24
2007-11-12 04:09:21 C 01 35 04.16 +11 49 25.2 r 703
2007-11-12 04:19:38 C 01 35 03.58 +11 49 23.0 r 703
2007-11-12 04:29:55 C 01 35 03.12 +11 49 20.8 r 703
2007-11-12 04:40:12 C 01 35 02.61 +11 49 18.8 r 703
2007-11-15 04:42:36 C 01 31 35.86 +11 33 25.4 18.2 c 704
2007-11-15 05:00:29 C 01 31 34.99 +11 33 22.3 18.2 c 704
2007-11-15 05:18:34 C 01 31 34.16 +11 33 17.9 18.3 c 704
2007-11-15 05:36:29 C 01 31 33.30 +11 33 14.3 18.3 c 704
2007-11-15 05:54:24 C 01 31 32.46 +11 33 10.9 18.3 c 704
2007-11-15 20:52:36 C 01 30 51.79 +11 30 00.5 c A24
2007-11-15 20:54:02 C 01 30 51.75 +11 30 00.7 c A24
2007-11-15 21:50:50 C 01 30 49.08 +11 29 48.6 c A24
2007-11-15 21:52:17 C 01 30 48.99 +11 29 47.7 c A24
2007-11-16 23:28:14 C 01 29 40.97 +11 24 32.0 c A24
2007-11-16 23:29:41 C 01 29 40.86 +11 24 31.9 c A24
2007-11-18 04:35:45 C 01 28 26.47 +11 18 44.4 r G96
2007-11-18 04:45:25 C 01 28 26.04 +11 18 42.4 r G96