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
2007-01-28 18:22:19 C 04 02 00.37 +49 38 11.3 c A24
2007-01-28 18:36:04 C 04 01 56.93 +49 37 59.7 c A24
2007-01-28 18:48:50 C 04 01 53.72 +49 37 49.2 c A24
2007-01-28 18:50:17 C 04 01 53.33 +49 37 47.9 c A24
2007-01-28 19:32:05 C 04 01 42.84 +49 37 12.9 c A24
2007-01-29 10:59:18 C 03 57 56.25 +49 24 03.0 r 379
2007-01-29 11:05:11 C 03 57 54.80 +49 23 57.8 r 379
2007-01-29 11:11:05 C 03 57 53.31 +49 23 52.4 r 379
2007-01-29 11:14:02 C 03 57 52.58 +49 23 50.0 r 379
2007-01-29 11:17:00 C 03 57 51.86 +49 23 47.4 r 379
2007-01-30 18:22:50 C 03 50 25.36 +48 55 23.6 13.9 r 084
2007-01-30 18:26:01 C 03 50 24.63 +48 55 20.9 14.0 r 084
2007-01-31 00:58:41 C 03 48 51.84 +48 48 58.9 14.0 r 084
2007-01-31 01:01:51 C 03 48 51.10 +48 48 55.8 14.0 r 084
2007-01-31 18:54:13 C 03 44 42.18 +48 31 36.0 14.1 r 084
2007-01-31 18:57:22 C 03 44 41.44 +48 31 32.8 14.1 r 084
2007-02-01 00:24:10 C 03 43 26.01 +48 25 58.3 14.2 r 084
2007-02-01 00:27:20 C 03 43 25.29 +48 25 55.0 14.2 r 084
2007-02-01 22:53:30 C 03 38 20.31 +48 02 52.1 14.2 r 084
2007-02-01 22:56:41 C 03 38 19.53 +48 02 48.4 14.2 r 084
2007-02-02 22:32:56 C 03 33 06.09 +47 37 34.7 c A24
2007-02-02 22:52:57 C 03 33 01.69 +47 37 12.0 c A24
2007-02-02 22:54:26 C 03 33 01.37 +47 37 10.5 c A24
2007-02-03 18:53:22 C 03 28 43.22 +47 15 02.8 c A24
2007-02-03 18:54:50 C 03 28 42.90 +47 15 01.1 c A24
2007-02-04 17:43:01 C 03 23 54.58 +46 48 52.3 a 233
2007-02-04 17:47:00 C 03 23 53.72 +46 48 47.8 a 233
2007-02-04 17:51:23 C 03 23 52.80 +46 48 42.7 a 233
2007-02-04 17:55:18 C 03 23 51.96 +46 48 38.1 a 233
2007-02-04 21:13:30 C 03 23 09.95 +46 44 42.5 c A24
2007-02-04 21:14:57 C 03 23 09.65 +46 44 40.8 c A24
2007-02-04 21:30:20 C 03 23 06.43 +46 44 22.3 c A24
2007-02-04 21:50:32 C 03 23 02.21 +46 43 58.0 c A24
2007-02-04 22:02:34 C 03 22 59.65 +46 43 43.4 c A24
2007-02-04 22:04:00 C 03 22 59.35 +46 43 41.8 c A24
2007-02-04 22:15:17 C 03 22 57.02 +46 43 28.3 c A24
2007-02-04 22:35:53 C 03 22 52.69 +46 43 03.5 c A24
2007-02-04 22:51:06 C 03 22 49.51 +46 42 45.0 c A24
2007-02-04 22:52:33 C 03 22 49.21 +46 42 43.3 c A24
2007-02-04 23:07:45 C 03 22 46.06 +46 42 25.1 c A24
2007-02-04 23:24:23 C 03 22 42.60 +46 42 04.7 c A24
2007-02-04 23:39:35 C 03 22 39.46 +46 41 46.4 c A24
2007-02-04 23:41:02 C 03 22 39.14 +46 41 44.5 c A24
2007-02-07 22:13:14 C 03 08 38.15 +45 15 18.0 14.0 r 084
2007-02-07 22:16:23 C 03 08 37.54 +45 15 14.2 13.9 r 084
2007-02-08 19:21:42 C 03 04 39.17 +44 48 17.4 14.2 r B24
2007-02-08 19:27:02 C 03 04 38.20 +44 48 10.1 14.0 r B24
2007-02-08 20:40:53 C 03 04 24.19 +44 46 28.1 14.2 r 084
2007-02-08 20:44:03 C 03 04 23.59 +44 46 23.9 14.2 r 084
2007-02-09 03:55:43 C 03 03 03.41 +44 37 09.7 14.4 c 704