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
2007-09-12 00:18:06 C 03 04 21.09 +16 59 30.0 r A13
2007-09-13 08:15:36 C 03 03 03.85 +16 57 19.8 17.5 c 704
2007-09-13 08:49:19 C 03 03 02.30 +16 57 18.2 19.4 c 704
2007-09-13 09:06:08 C 03 03 01.68 +16 57 16.2 18.0 c 704
2007-09-13 09:22:58 C 03 03 00.97 +16 57 15.1 17.5 c 704
2007-09-16 08:25:01 C 02 59 55.43 +16 51 21.9 17.1 c 704
2007-09-16 08:42:09 C 02 59 54.66 +16 51 21.2 17.5 c 704
2007-09-16 08:59:16 C 02 59 53.86 +16 51 19.6 17.8 c 704
2007-09-16 09:16:24 C 02 59 53.02 +16 51 17.2 17.4 c 704
2007-09-16 09:33:35 C 02 59 52.21 +16 51 15.9 17.6 c 704
2007-09-17 00:57:56 C 02 59 09.64 +16 49 48.0 r B19
2007-09-17 01:03:00 C 02 59 09.38 +16 49 47.4 r B19
2007-09-17 01:08:06 C 02 59 09.17 +16 49 47.6 r B19
2007-09-19 07:05:26 C 02 56 33.04 +16 44 11.2 17.5 c 704
2007-09-19 07:22:44 C 02 56 32.17 +16 44 09.6 17.7 c 704
2007-09-19 07:39:57 C 02 56 31.29 +16 44 07.6 17.4 c 704
2007-09-19 07:57:07 C 02 56 30.41 +16 44 05.6 17.6 c 704
2007-09-19 07:57:27 C 02 56 30.40 +16 44 05.6 17.5 c 704
2007-09-19 08:14:20 C 02 56 29.54 +16 44 03.8 17.7 c 704
2007-09-19 08:16:10 C 02 56 29.44 +16 44 04.0 17.6 c 704
2007-09-19 08:33:55 C 02 56 28.49 +16 44 02.2 17.9 c 704
2007-09-19 08:51:58 C 02 56 27.62 +16 43 59.8 17.7 c 704
2007-09-19 09:09:00 C 02 56 26.77 +16 43 58.0 17.8 c 704
2007-10-02 23:13:53 C 02 37 30.83 +15 53 00.7 r A13
2007-10-02 23:40:22 C 02 37 29.07 +15 52 55.6 r A13
2007-10-03 00:06:49 C 02 37 27.32 +15 52 50.3 r A13
2007-10-03 23:44:37 C 02 35 54.77 +15 48 05.2 r J51
2007-10-03 23:50:59 C 02 35 54.35 +15 48 04.0 r J51
2007-10-03 23:57:23 C 02 35 53.92 +15 48 02.9 r J51
2007-10-04 08:41:33 C 02 35 19.15 +15 46 14.8 o 691
2007-10-04 09:06:55 C 02 35 17.45 +15 46 09.7 o 691
2007-10-04 09:32:17 C 02 35 15.78 +15 46 04.0 o 691
2007-10-04 15:45:19 C 02 34 51.32 +15 44 48.7 r D29
2007-10-04 16:03:33 C 02 34 50.03 +15 44 42.5 r D29
2007-10-04 16:21:32 C 02 34 48.81 +15 44 38.8 r D29
2007-10-04 16:40:09 C 02 34 47.56 +15 44 35.0 r D29
2007-10-04 17:00:14 C 02 34 46.20 +15 44 30.8 r D29
2007-10-04 17:18:39 C 02 34 44.97 +15 44 26.9 r D29
2007-10-04 17:36:33 C 02 34 43.74 +15 44 23.4 r D29
2007-10-04 17:54:37 C 02 34 42.47 +15 44 19.6 r D29
2007-10-05 00:37:43 C 02 34 15.77 +15 42 53.8 c A24
2007-10-05 00:39:09 C 02 34 15.67 +15 42 53.5 c A24
2007-10-05 01:02:48 C 02 34 13.99 +15 42 46.6 r 084
2007-10-05 01:20:30 C 02 34 12.87 +15 42 45.1 c A24
2007-10-05 01:21:57 C 02 34 12.73 +15 42 44.6 c A24
2007-10-06 06:17:05 C 02 32 16.74 +15 36 33.5 17.3 c 704
2007-10-06 06:33:14 C 02 32 15.66 +15 36 30.0 17.8 c 704
2007-10-06 06:48:47 C 02 32 14.60 +15 36 26.5 17.5 c 704
2007-10-06 07:04:21 C 02 32 13.53 +15 36 23.5 17.5 c 704
2007-10-06 07:19:53 C 02 32 12.47 +15 36 19.9 17.2 c 704