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
2007-01-06 23:08:19 C 06 16 15.18 +50 25 52.8 14.2 o B24
2007-01-06 23:18:15 C 06 16 12.96 +50 25 59.3 14.6 o B24
2007-01-06 23:32:23 C 06 16 09.87 +50 26 07.1 14.4 o B24
2007-01-06 23:46:20 C 06 16 06.70 +50 26 15.7 14.4 o B24
2007-01-06 23:51:17 C 06 16 05.61 +50 26 18.4 14.6 o B24
2007-01-08 06:11:40 C 06 09 18.68 +50 43 26.2 14.5 c 704
2007-01-08 06:30:01 C 06 09 14.44 +50 43 35.5 15.0 c 704
2007-01-08 06:48:09 C 06 09 10.18 +50 43 45.5 14.9 c 704
2007-01-08 07:06:19 C 06 09 05.94 +50 43 55.1 14.8 c 704
2007-01-08 07:24:33 C 06 09 01.69 +50 44 04.5 14.9 c 704
2007-01-09 12:05:26 C 06 02 23.06 +50 58 27.4 o 379
2007-01-09 12:12:29 C 06 02 21.38 +50 58 31.0 o 379
2007-01-10 11:46:33 C 05 56 43.68 +51 08 58.4 o 379
2007-01-10 11:48:17 C 05 56 43.23 +51 08 59.3 o 379
2007-01-10 11:50:02 C 05 56 42.84 +51 09 00.0 o 379
2007-01-10 11:55:20 C 05 56 41.51 +51 09 02.2 o 379
2007-01-10 11:57:04 C 05 56 41.09 +51 09 02.9 o 379
2007-01-10 12:02:42 C 05 56 39.69 +51 09 05.4 o 379
2007-01-10 12:07:56 C 05 56 38.40 +51 09 07.7 o 379
2007-01-10 12:11:27 C 05 56 37.52 +51 09 09.3 o 379
2007-01-10 21:33:53 C 05 54 20.60 +51 12 54.1 14.0 o B24
2007-01-10 21:37:47 C 05 54 19.65 +51 12 55.4 13.8 o B24
2007-01-10 21:48:56 C 05 54 16.86 +51 12 59.7 13.7 o B24
2007-01-10 21:55:18 C 05 54 15.20 +51 13 02.2 13.8 o B24
2007-01-10 21:58:03 C 05 54 14.64 +51 13 03.7 13.8 o B24
2007-01-12 20:53:55 C 05 42 32.11 +51 28 40.2 13.8 o 084
2007-01-12 20:57:04 C 05 42 31.29 +51 28 41.0 14.0 o 084
2007-01-13 21:03:01 C 05 36 20.62 +51 34 31.7 14.5 c B11
2007-01-13 21:05:18 C 05 36 20.02 +51 34 32.1 14.5 c B11
2007-01-13 21:08:54 C 05 36 19.07 +51 34 32.9 14.6 c B11
2007-01-13 21:12:30 C 05 36 18.12 +51 34 33.7 14.6 c B11
2007-01-14 11:50:00 C 05 32 30.37 +51 37 19.4 r 379
2007-01-14 11:57:59 C 05 32 28.24 +51 37 20.8 r 379
2007-01-14 12:04:16 C 05 32 26.54 +51 37 21.7 r 379
2007-01-14 12:06:58 C 05 32 25.82 +51 37 22.3 r 379
2007-01-14 12:09:38 C 05 32 25.11 +51 37 22.6 r 379
2007-01-18 21:34:14 C 05 04 16.00 +51 38 08.0 14.2 o 084
2007-01-18 21:37:23 C 05 04 15.09 +51 38 07.4 14.2 o 084
2007-01-19 21:36:11 C 04 57 45.59 +51 33 38.6 c A24
2007-01-19 21:37:38 C 04 57 45.19 +51 33 38.2 c A24
2007-01-19 21:53:38 C 04 57 40.80 +51 33 34.2 c A24
2007-01-19 22:11:05 C 04 57 36.00 +51 33 29.9 c A24
2007-01-19 22:12:23 C 04 57 35.74 +51 33 28.4 o A32
2007-01-19 22:14:00 C 04 57 35.31 +51 33 26.5 o A32
2007-01-19 22:20:09 C 04 57 33.54 +51 33 27.2 c A24
2007-01-19 22:27:07 C 04 57 31.58 +51 33 26.3 c A24
2007-01-19 22:28:33 C 04 57 31.18 +51 33 25.8 c A24
2007-01-19 22:36:38 C 04 57 29.00 +51 33 23.2 c A24
2007-01-19 22:54:06 C 04 57 24.17 +51 33 19.4 c A24
2007-01-19 23:20:07 C 04 57 17.03 +51 33 12.5 c A24