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
2007-02-20 20:15:30 C 02 17 54.89 +37 52 50.2 c A24
2007-02-20 20:29:21 C 02 17 52.88 +37 52 27.8 c A24
2007-02-20 20:30:50 C 02 17 52.66 +37 52 25.5 c A24
2007-02-20 20:38:48 C 02 17 51.77 +37 52 08.2 13.9 r 084
2007-02-20 20:42:00 C 02 17 51.30 +37 52 03.0 13.8 r 084
2007-02-20 20:45:29 C 02 17 50.79 +37 51 57.4 13.8 r 084
2007-02-20 20:48:00 C 02 17 50.14 +37 51 58.0 c A24
2007-02-20 20:48:44 C 02 17 50.33 +37 51 52.3 13.8 r 084
2007-02-20 21:07:05 C 02 17 47.35 +37 51 27.5 c A24
2007-02-20 21:25:24 C 02 17 44.66 +37 50 58.3 c A24
2007-02-20 21:37:32 C 02 17 42.88 +37 50 38.8 c A24
2007-02-22 19:14:36 C 02 11 11.84 +36 37 40.2 c A24
2007-02-22 19:16:03 C 02 11 11.64 +36 37 37.8 c A24
2007-02-22 19:30:57 C 02 11 09.50 +36 37 13.1 c A24
2007-02-22 19:45:03 C 02 11 07.47 +36 36 49.9 c A24
2007-02-22 19:58:49 C 02 11 05.47 +36 36 27.1 c A24
2007-02-22 20:00:16 C 02 11 05.26 +36 36 24.8 c A24
2007-02-22 20:15:19 C 02 11 03.11 +36 35 59.8 c A24
2007-02-22 20:29:31 C 02 11 01.08 +36 35 36.1 c A24
2007-02-22 20:43:25 C 02 10 59.08 +36 35 12.8 c A24
2007-02-22 20:44:52 C 02 10 58.91 +36 35 10.7 c A24
2007-02-22 21:01:30 C 02 10 56.50 +36 34 42.9 c A24
2007-02-22 21:20:35 C 02 10 53.76 +36 34 11.2 c A24
2007-02-22 21:38:39 C 02 10 51.17 +36 33 41.1 c A24
2007-02-23 09:46:12 C 02 09 08.38 +36 13 57.5 r 379
2007-02-23 09:49:25 C 02 09 07.93 +36 13 52.3 r 379
2007-02-23 09:55:50 C 02 09 07.00 +36 13 41.5 r 379
2007-02-23 20:31:31 C 02 07 37.29 +35 55 59.3 14.3 r 084
2007-02-23 20:34:40 C 02 07 36.87 +35 55 54.2 14.2 r 084
2007-02-25 20:47:12 C 02 00 49.01 +34 34 09.5 14.3 r 084
2007-02-25 20:50:22 C 02 00 48.56 +34 34 03.8 14.3 r 084
2007-02-26 01:03:44 C 02 00 12.65 +34 26 55.0 r H45
2007-02-26 01:05:01 C 02 00 12.46 +34 26 52.8 r H45
2007-02-26 01:05:44 C 02 00 12.36 +34 26 51.5 r H45
2007-02-26 01:06:21 C 02 00 12.27 +34 26 50.5 r H45
2007-02-26 01:07:54 C 02 00 12.05 +34 26 47.7 r H45
2007-07-22 18:48:08 C 03 07 55.77 +15 31 25.1 r E12
2007-07-22 19:02:17 C 03 07 56.17 +15 31 28.0 r E12
2007-07-22 19:16:34 C 03 07 56.56 +15 31 30.9 r E12
2007-07-22 19:30:52 C 03 07 56.96 +15 31 33.4 r E12
2007-08-15 09:26:07 C 03 16 41.81 +16 49 52.3 o 704
2007-08-15 09:43:38 C 03 16 41.81 +16 49 54.3 o 704
2007-08-15 10:01:08 C 03 16 41.82 +16 49 55.9 o 704
2007-08-15 10:18:38 C 03 16 41.82 +16 49 57.5 o 704
2007-08-15 10:36:07 C 03 16 41.82 +16 49 59.3 o 704
2007-09-10 09:56:10 C 03 05 48.76 +17 01 47.5 r 703
2007-09-10 10:06:22 C 03 05 48.37 +17 01 47.2 r 703
2007-09-10 10:16:33 C 03 05 47.97 +17 01 46.6 r 703
2007-09-10 10:26:49 C 03 05 47.61 +17 01 46.2 r 703
2007-09-11 23:53:47 C 03 04 22.07 +16 59 31.2 r A13