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
2012-11-14 07:23:56 C 05 25 44.58 +34 47 45.9 18.3 c 704
2012-11-14 07:45:52 C 05 25 43.43 +34 47 47.7 18.7 c 704
2012-11-14 08:07:41 C 05 25 42.27 +34 47 50.6 18.7 c 704
2012-11-14 08:29:56 C 05 25 41.13 +34 47 53.5 18.8 c 704
2012-11-14 08:53:01 C 05 25 40.01 +34 47 56.2 19.2 c 704
2012-11-21 00:52:38 C 05 16 52.75 +35 03 44.1 c A24
2012-11-21 00:54:43 C 05 16 52.60 +35 03 44.2 c A24
2012-11-21 00:55:46 C 05 16 52.56 +35 03 44.4 c A24
2012-12-02 04:57:44 C 04 59 31.34 +35 15 25.1 r G96
2012-12-02 05:01:57 C 04 59 31.05 +35 15 25.0 r G96
2012-12-02 05:06:11 C 04 59 30.73 +35 15 25.1 r G96
2012-12-02 05:10:27 C 04 59 30.44 +35 15 25.3 r G96
2012-12-02 05:14:46 C 04 59 30.15 +35 15 25.3 r G96
2012-12-02 05:35:44 C 04 59 28.64 +35 15 25.2 r G96
2012-12-02 05:38:30 C 04 59 28.46 +35 15 25.4 r G96
2012-12-02 05:41:11 C 04 59 28.28 +35 15 25.3 r G96
2012-12-02 05:43:51 C 04 59 28.10 +35 15 25.4 r G96
2012-12-02 05:46:34 C 04 59 27.92 +35 15 25.4 r G96
2012-12-04 01:00:02 C 04 56 25.98 +35 15 11.3 c A24
2012-12-04 01:12:44 C 04 56 25.06 +35 15 11.0 c A24
2012-12-04 01:21:24 C 04 56 24.45 +35 15 10.8 c A24
2012-12-04 01:43:48 C 04 56 22.85 +35 15 10.2 c A24
2012-12-04 01:52:27 C 04 56 22.23 +35 15 10.0 c A24
2012-12-04 02:05:10 C 04 56 21.36 +35 15 10.1 c A24
2012-12-06 01:53:52 C 04 52 57.27 +35 14 09.7 c A24
2012-12-06 01:54:54 C 04 52 57.20 +35 14 09.2 c A24
2012-12-06 01:55:56 C 04 52 57.14 +35 14 09.3 c A24
2012-12-06 01:56:59 C 04 52 57.05 +35 14 09.4 c A24
2012-12-08 03:33:57 C 04 49 23.19 +35 12 16.4 o 926
2012-12-08 03:53:57 C 04 49 21.76 +35 12 15.7 o 926
2012-12-08 04:14:23 C 04 49 20.24 +35 12 14.9 o 926
2012-12-09 04:40:05 C 04 47 33.97 +35 10 59.6 r 703
2012-12-09 04:48:12 C 04 47 33.43 +35 10 58.8 r 703
2012-12-09 04:56:27 C 04 47 32.82 +35 10 58.8 r 703
2012-12-09 05:04:42 C 04 47 32.17 +35 10 58.2 r 703
2012-12-09 05:12:53 C 04 47 31.56 +35 10 58.1 r 703
2012-12-09 06:03:35 C 04 47 27.88 +35 10 55.4 17.9 c 704
2012-12-09 06:22:14 C 04 47 26.59 +35 10 54.9 18.1 c 704
2012-12-09 06:41:01 C 04 47 25.21 +35 10 53.2 18.2 c 704
2012-12-09 06:59:47 C 04 47 23.83 +35 10 51.9 18.1 c 704
2012-12-09 07:18:34 C 04 47 22.34 +35 10 50.9 18.3 c 704
2012-12-10 01:16:27 C 04 46 03.95 +35 09 45.4 c A24
2012-12-10 01:18:33 C 04 46 03.79 +35 09 45.2 c A24
2012-12-10 01:39:44 C 04 46 02.23 +35 09 43.8 c A24
2012-12-10 02:04:11 C 04 46 00.44 +35 09 42.2 c A24
2012-12-10 02:24:42 C 04 45 58.93 +35 09 41.1 c A24
2012-12-10 02:26:45 C 04 45 58.79 +35 09 40.8 c A24
2012-12-11 01:24:41 C 04 44 18.55 +35 08 08.1 c A24
2012-12-11 03:04:34 C 04 44 11.21 +35 08 00.6 c A24
2012-12-11 03:05:36 C 04 44 11.16 +35 08 00.5 c A24