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
2007-10-06 08:18:34 C 02 32 08.48 +15 36 06.3 w 699
2007-10-06 08:49:52 C 02 32 06.34 +15 35 59.9 w 699
2007-10-06 09:21:10 C 02 32 04.08 +15 35 52.7 w 699
2007-10-06 09:52:28 C 02 32 02.02 +15 35 46.5 w 699
2007-10-07 01:18:27 C 02 30 59.57 +15 32 22.7 r J51
2007-10-07 01:30:17 C 02 30 58.75 +15 32 20.2 r J51
2007-10-07 01:40:08 C 02 30 58.07 +15 32 18.1 r J51
2007-10-08 06:09:29 C 02 29 01.67 +15 25 52.8 o 691
2007-10-08 06:34:50 C 02 28 59.91 +15 25 47.0 o 691
2007-10-08 07:00:14 C 02 28 58.14 +15 25 41.4 o 691
2007-10-09 07:20:29 C 02 27 17.71 +15 20 03.7 18.2 c 704
2007-10-09 07:36:25 C 02 27 16.62 +15 20 00.2 18.0 c 704
2007-10-09 07:52:22 C 02 27 15.50 +15 19 56.9 17.9 c 704
2007-10-09 08:08:18 C 02 27 14.40 +15 19 53.0 17.9 c 704
2007-10-09 08:24:12 C 02 27 13.27 +15 19 49.4 18.0 c 704
2007-10-11 00:09:44 C 02 24 27.93 +15 10 20.6 r 084
2007-10-11 00:13:58 C 02 24 27.64 +15 10 19.7 r 084
2007-10-11 06:13:57 C 02 24 02.79 +15 08 55.0 17.5 c 704
2007-10-11 06:29:50 C 02 24 01.65 +15 08 51.1 17.7 c 704
2007-10-11 06:45:54 C 02 24 00.53 +15 08 47.4 17.7 c 704
2007-10-11 07:01:48 C 02 23 59.39 +15 08 43.5 17.7 c 704
2007-10-11 07:17:43 C 02 23 58.28 +15 08 39.7 17.6 c 704
2007-10-11 07:21:55 C 02 23 57.93 +15 08 38.3 17.3 c 704
2007-10-11 07:37:57 C 02 23 56.80 +15 08 34.6 17.7 c 704
2007-10-11 07:54:11 C 02 23 55.66 +15 08 30.7 17.7 c 704
2007-10-11 08:10:11 C 02 23 54.52 +15 08 26.7 17.7 c 704
2007-10-11 08:26:16 C 02 23 53.37 +15 08 22.8 18.0 c 704
2007-10-12 06:18:56 C 02 22 21.94 +15 03 02.0 o 691
2007-10-12 06:44:21 C 02 22 20.11 +15 02 55.8 o 691
2007-10-12 07:09:46 C 02 22 18.30 +15 02 49.7 o 691
2007-10-12 07:19:24 C 02 22 17.65 +15 02 47.9 18.0 c 704
2007-10-12 07:35:37 C 02 22 16.47 +15 02 43.0 17.6 c 704
2007-10-12 07:51:45 C 02 22 15.35 +15 02 39.9 17.5 c 704
2007-10-12 08:07:53 C 02 22 14.16 +15 02 35.1 17.7 c 704
2007-10-12 08:24:01 C 02 22 13.02 +15 02 31.1 17.7 c 704
2007-10-13 00:43:37 C 02 21 04.37 +14 58 27.1 c A24
2007-10-13 00:45:04 C 02 21 04.33 +14 58 26.5 c A24
2007-10-13 00:58:51 C 02 21 03.33 +14 58 23.2 c A24
2007-10-13 01:14:04 C 02 21 02.26 +14 58 19.2 c A24
2007-10-13 01:27:51 C 02 21 01.27 +14 58 15.8 c A24
2007-10-13 01:29:17 C 02 21 01.18 +14 58 15.4 c A24
2007-10-14 06:12:39 C 02 19 00.45 +14 51 02.8 18.1 c 704
2007-10-14 06:28:37 C 02 18 59.33 +14 50 58.8 18.1 c 704
2007-10-14 06:44:38 C 02 18 58.18 +14 50 54.9 18.2 c 704
2007-10-14 07:00:39 C 02 18 57.02 +14 50 50.9 18.5 c 704
2007-10-14 07:16:39 C 02 18 55.89 +14 50 47.1 18.2 c 704
2007-10-15 06:53:46 C 02 17 16.36 +14 44 44.0 r 703
2007-10-15 07:02:15 C 02 17 15.72 +14 44 41.6 r 703
2007-10-15 07:10:43 C 02 17 15.10 +14 44 39.5 r 703
2007-10-15 07:19:07 C 02 17 14.53 +14 44 37.3 r 703