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
2007-10-16 00:45:04 C 02 16 00.85 +14 40 05.8 c A24
2007-10-16 00:46:30 C 02 16 00.73 +14 40 05.3 c A24
2007-10-16 00:59:20 C 02 15 59.83 +14 40 02.0 c A24
2007-10-16 01:13:37 C 02 15 58.81 +14 39 58.3 c A24
2007-10-16 01:26:27 C 02 15 57.89 +14 39 55.1 c A24
2007-10-16 01:27:53 C 02 15 57.77 +14 39 54.7 c A24
2007-10-16 06:09:57 C 02 15 38.19 +14 38 42.6 o 691
2007-10-16 06:35:21 C 02 15 36.37 +14 38 35.5 o 691
2007-10-16 07:00:47 C 02 15 34.57 +14 38 29.3 o 691
2007-10-18 05:40:37 C 02 12 18.07 +14 26 12.2 w 699
2007-10-18 06:17:31 C 02 12 15.44 +14 26 02.0 w 699
2007-10-18 06:54:23 C 02 12 12.82 +14 25 52.7 w 699
2007-10-18 07:31:15 C 02 12 10.19 +14 25 42.8 w 699
2007-10-19 06:09:30 C 02 10 35.16 +14 19 41.2 17.0 c 704
2007-10-19 06:25:53 C 02 10 34.00 +14 19 36.5 17.1 c 704
2007-10-19 06:42:13 C 02 10 32.84 +14 19 32.3 17.1 c 704
2007-10-19 06:58:56 C 02 10 31.65 +14 19 28.0 17.3 c 704
2007-10-19 07:15:14 C 02 10 30.50 +14 19 23.4 17.5 c 704
2007-10-20 05:43:20 C 02 08 56.62 +14 13 20.8 o 691
2007-10-20 06:09:11 C 02 08 54.79 +14 13 13.9 o 691
2007-10-20 06:34:31 C 02 08 52.99 +14 13 07.1 o 691
2007-10-20 07:11:58 C 02 08 50.35 +14 12 56.7 r 703
2007-10-20 07:23:40 C 02 08 49.52 +14 12 53.5 r 703
2007-10-20 07:35:23 C 02 08 48.69 +14 12 50.5 r 703
2007-10-20 07:47:04 C 02 08 47.86 +14 12 47.1 r 703
2007-10-20 22:57:57 C 02 07 44.56 +14 08 39.3 r 084
2007-10-20 23:02:11 C 02 07 44.31 +14 08 38.4 r 084
2007-10-21 06:11:21 C 02 07 14.59 +14 06 44.1 16.9 c 704
2007-10-21 06:44:07 C 02 07 12.26 +14 06 35.7 18.0 c 704
2007-10-21 07:00:28 C 02 07 11.14 +14 06 30.7 17.6 c 704
2007-10-21 07:16:51 C 02 07 09.94 +14 06 25.6 17.9 c 704
2007-10-21 07:38:19 C 02 07 08.45 +14 06 19.9 r H45
2007-10-21 07:39:39 C 02 07 08.35 +14 06 19.6 r H45
2007-10-21 07:41:03 C 02 07 08.26 +14 06 19.4 r H45
2007-10-21 07:42:25 C 02 07 08.15 +14 06 18.7 r H45
2007-10-21 07:43:46 C 02 07 08.07 +14 06 18.5 r H45
2007-10-22 21:08:40 C 02 04 33.67 +13 56 08.3 r J51
2007-10-22 21:16:05 C 02 04 33.13 +13 56 06.1 r J51
2007-10-22 21:23:30 C 02 04 32.59 +13 56 03.9 r J51
2007-10-28 07:24:02 C 01 55 49.10 +13 20 30.6 r H45
2007-10-28 07:26:10 C 01 55 48.95 +13 20 29.7 r H45
2007-10-28 07:28:04 C 01 55 48.83 +13 20 29.3 r H45
2007-10-28 07:32:53 C 01 55 48.49 +13 20 27.9 r H45
2007-10-28 07:35:34 C 01 55 48.33 +13 20 27.2 r H45
2007-10-30 05:41:03 C 01 52 50.08 +13 07 56.6 r 703
2007-10-30 05:53:11 C 01 52 49.29 +13 07 53.6 r 703
2007-10-30 06:05:17 C 01 52 48.54 +13 07 50.5 r 703
2007-10-30 06:17:22 C 01 52 47.71 +13 07 46.9 r 703
2007-10-31 18:04:58 C 01 50 32.37 +12 58 08.5 c 097
2007-10-31 19:12:31 C 01 50 28.09 +12 57 50.6 c 097