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
2010-09-23 00:15:08 C 02 20 06.08 +08 53 39.8 u 160
2010-09-29 01:35:04 C 02 03 37.94 +08 01 04.4 r J75
2010-09-29 01:55:36 C 02 03 35.56 +08 00 56.7 r J75
2010-09-29 02:14:52 C 02 03 33.33 +08 00 49.4 r J75
2010-09-30 01:28:43 C 02 00 55.48 +07 52 10.0 r J75
2010-09-30 01:48:00 C 02 00 53.25 +07 52 02.8 r J75
2010-09-30 02:07:16 C 02 00 51.03 +07 51 55.6 r J75
2010-09-30 09:40:11 C 01 59 59.759 +07 49 07.17 u 695
2010-09-30 09:42:59 C 01 59 59.424 +07 49 06.08 u 695
2010-09-30 09:45:38 C 01 59 59.118 +07 49 05.04 u 695
2010-10-01 10:08:19 C 01 57 14.03 +07 39 57.5 15.5 c 704
2010-10-01 10:27:04 C 01 57 11.88 +07 39 50.4 15.7 c 704
2010-10-01 10:45:47 C 01 57 09.73 +07 39 43.4 15.6 c 704
2010-10-01 11:04:31 C 01 57 07.59 +07 39 36.3 15.7 c 704
2010-10-01 11:23:27 C 01 57 05.43 +07 39 29.2 15.7 c 704
2010-10-01 12:17:35 C 01 56 59.250 +07 39 08.69 u 695
2010-10-01 12:20:14 C 01 56 58.948 +07 39 07.70 u 695
2010-10-01 12:22:54 C 01 56 58.713 +07 39 06.93 u 695
2010-10-02 08:32:58 C 01 54 43.19 +07 31 33.3 15.2 c 704
2010-10-02 08:52:03 C 01 54 41.00 +07 31 26.2 15.4 c 704
2010-10-02 09:11:05 C 01 54 38.84 +07 31 19.0 15.3 c 704
2010-10-02 09:21:13 C 01 54 37.71 +07 31 15.3 o 691
2010-10-02 09:30:16 C 01 54 36.65 +07 31 11.7 15.4 c 704
2010-10-02 09:30:42 C 01 54 36.627 +07 31 11.50 u 695
2010-10-02 09:33:29 C 01 54 36.311 +07 31 10.44 u 695
2010-10-02 09:36:10 C 01 54 35.997 +07 31 09.40 u 695
2010-10-02 09:46:37 C 01 54 34.80 +07 31 05.7 o 691
2010-10-02 09:49:16 C 01 54 34.48 +07 31 04.5 15.7 c 704
2010-10-02 10:12:00 C 01 54 31.92 +07 30 56.1 o 691
2010-10-02 19:46:32 C 01 53 28.18 +07 27 18.4 o B17
2010-10-02 19:58:31 C 01 53 26.82 +07 27 13.9 o B17
2010-10-02 20:23:31 C 01 53 23.99 +07 27 04.7 o B17
2010-10-02 20:34:32 C 01 53 22.74 +07 27 00.6 o B17
2010-10-02 20:46:31 C 01 53 21.38 +07 26 56.2 o B17
2010-10-02 20:58:31 C 01 53 20.03 +07 26 51.7 o B17
2010-10-02 21:10:32 C 01 53 18.67 +07 26 47.2 o B17
2010-10-03 09:39:42 C 01 51 54.821 +07 22 08.02 u 695
2010-10-03 09:42:32 C 01 51 54.512 +07 22 06.98 u 695
2010-10-03 09:45:11 C 01 51 54.188 +07 22 05.90 u 695
2010-10-04 18:41:49 C 01 48 15.14 +07 09 45.5 u 379
2010-10-04 18:44:29 C 01 48 14.87 +07 09 44.6 u 379
2010-10-04 18:51:09 C 01 48 14.11 +07 09 42.0 u 379
2010-10-04 18:53:49 C 01 48 13.82 +07 09 40.7 u 379
2010-10-04 18:56:30 C 01 48 13.52 +07 09 39.8 u 379
2010-10-05 01:58:08 C 01 47 27.45 +07 07 02.4 r J75
2010-10-05 02:16:20 C 01 47 25.39 +07 06 55.7 r J75
2010-10-05 02:34:33 C 01 47 23.38 +07 06 48.8 r J75
2010-10-05 18:36:49 C 01 45 37.87 +07 00 50.7 u 379
2010-10-05 18:46:09 C 01 45 36.85 +07 00 46.9 u 379
2010-10-05 18:48:49 C 01 45 36.53 +07 00 46.1 u 379