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
2007-02-15 21:11:33 C 02 35 43.78 +40 53 18.6 c A24
2007-02-15 21:13:01 C 02 35 43.55 +40 53 16.4 c A24
2007-02-15 21:35:29 C 02 35 39.97 +40 52 43.1 c A24
2007-02-15 21:42:52 C 02 35 38.80 +40 52 32.1 c A24
2007-02-15 21:59:25 C 02 35 36.16 +40 52 07.5 c A24
2007-02-16 20:44:02 C 02 32 05.16 +40 18 40.2 c A24
2007-02-16 20:45:29 C 02 32 04.94 +40 18 38.0 c A24
2007-02-16 21:09:55 C 02 32 01.18 +40 18 00.9 c A24
2007-02-16 21:33:31 C 02 31 57.55 +40 17 25.4 c A24
2007-02-16 21:56:48 C 02 31 53.90 +40 16 49.5 c A24
2007-02-16 21:58:16 C 02 31 53.80 +40 16 48.7 c A24
2007-02-16 22:19:31 C 02 31 50.45 +40 16 15.6 c A24
2007-02-16 22:42:11 C 02 31 46.95 +40 15 41.1 c A24
2007-02-16 23:04:41 C 02 31 43.48 +40 15 07.0 c A24
2007-02-18 18:16:08 C 02 25 13.75 +39 10 17.7 c A24
2007-02-18 18:17:39 C 02 25 13.53 +39 10 15.4 c A24
2007-02-18 18:38:32 C 02 25 10.36 +39 09 43.0 c A24
2007-02-18 18:58:29 C 02 25 07.35 +39 09 12.2 c A24
2007-02-18 19:18:09 C 02 25 04.35 +39 08 41.7 c A24
2007-02-18 19:19:40 C 02 25 04.12 +39 08 39.4 c A24
2007-02-18 19:38:47 C 02 25 01.23 +39 08 09.7 c A24
2007-02-18 19:57:52 C 02 24 58.32 +39 07 40.1 c A24
2007-02-18 19:59:27 C 02 24 58.11 +39 07 37.7 c A24
2007-02-18 20:15:57 C 02 24 55.58 +39 07 12.0 c A24
2007-02-18 20:18:35 C 02 24 55.25 +39 07 07.9 c A24
2007-02-18 20:20:07 C 02 24 55.02 +39 07 05.4 c A24
2007-02-18 20:34:35 C 02 24 52.76 +39 06 43.2 c A24
2007-02-18 20:57:23 C 02 24 49.30 +39 06 07.7 c A24
2007-02-18 21:08:43 C 02 24 47.65 +39 05 50.1 c A24
2007-02-19 09:20:57 C 02 23 00.13 +38 47 15.6 r 379
2007-02-19 09:24:08 C 02 22 59.65 +38 47 10.6 r 379
2007-02-19 09:27:20 C 02 22 59.19 +38 47 06.0 r 379
2007-02-19 09:30:33 C 02 22 58.69 +38 47 01.0 r 379
2007-02-19 20:22:35 C 02 21 23.09 +38 30 02.8 13.8 r 084
2007-02-19 20:25:45 C 02 21 22.63 +38 29 57.9 13.8 r 084
2007-02-19 20:30:59 C 02 21 21.64 +38 29 54.3 c A24
2007-02-19 20:32:32 C 02 21 21.41 +38 29 51.8 c A24
2007-02-19 20:53:58 C 02 21 18.23 +38 29 18.0 c A24
2007-02-19 21:08:57 C 02 21 16.05 +38 28 54.2 c A24
2007-02-19 21:26:24 C 02 21 13.49 +38 28 26.6 c A24
2007-02-19 21:27:56 C 02 21 13.27 +38 28 24.1 c A24
2007-02-19 21:52:50 C 02 21 09.58 +38 27 44.9 c A24
2007-02-19 22:12:16 C 02 21 06.70 +38 27 14.2 c A24
2007-02-20 18:59:03 C 02 18 06.10 +37 54 52.4 c A24
2007-02-20 19:00:32 C 02 18 05.87 +37 54 50.1 c A24
2007-02-20 19:15:57 C 02 18 03.62 +37 54 25.5 c A24
2007-02-20 19:30:35 C 02 18 01.46 +37 54 02.1 c A24
2007-02-20 19:44:53 C 02 17 59.37 +37 53 39.2 c A24
2007-02-20 19:46:21 C 02 17 59.15 +37 53 36.9 c A24
2007-02-20 20:01:18 C 02 17 56.96 +37 53 13.0 c A24