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
2023-08-21 14:04:51 C 03 22 29.222 +19 01 56.21 V T05
2023-08-21 14:14:25 C 03 22 29.203 +19 01 57.07 V T05
2023-08-27 12:55:53 C 03 21 46.721 +19 11 04.92 V T05
2023-08-27 13:00:27 C 03 21 46.678 +19 11 04.92 V T05
2023-08-27 14:27:48 C 03 21 45.794 +19 11 09.78 V T05
2023-08-27 14:32:45 C 03 21 45.756 +19 11 10.39 V T05
2023-08-29 13:46:58 C 03 21 17.671 +19 13 24.35 V T05
2023-08-29 13:54:08 C 03 21 17.532 +19 13 25.25 V T05
2023-08-29 13:58:44 C 03 21 17.496 +19 13 25.25 V T05
2023-08-29 14:11:11 C 03 21 17.333 +19 13 26.00 V T05
2023-09-07 03:04:43 B 03 17 51.81 +19 18 24.6 V L65
2023-09-07 03:09:06 B 03 17 51.72 +19 18 25.0 V L65
2023-09-07 03:13:15 B 03 17 51.61 +19 18 25.1 V L65
2023-09-07 09:23:31 C 03 17 43.236 +19 18 31.32 V W68
2023-09-07 09:29:24 C 03 17 43.114 +19 18 31.36 V W68
2023-09-07 09:38:43 C 03 17 42.866 +19 18 31.97 V W68
2023-09-07 09:52:29 C 03 17 42.557 +19 18 31.79 V W68
2023-09-08 01:10:18 B 03 17 21.499 +19 18 27.79 V L65
2023-09-08 01:14:42 B 03 17 21.427 +19 18 27.61 V L65
2023-09-08 01:18:51 B 03 17 21.298 +19 18 27.58 V L65
2023-09-08 13:20:10 C 03 17 04.075 +19 18 29.52 V T05
2023-09-08 13:22:46 C 03 17 04.020 +19 18 29.34 V T05
2023-09-08 13:27:19 C 03 17 03.890 +19 18 29.48 V T05
2023-09-08 13:34:54 C 03 17 03.710 +19 18 29.23 V T05
2023-09-10 12:57:27 C 03 15 51.142 +19 18 09.18 V T05
2023-09-10 13:01:34 C 03 15 51.058 +19 18 09.00 V T05
2023-09-10 13:03:31 C 03 15 51.007 +19 18 09.00 V T05
2023-09-10 13:06:07 C 03 15 50.916 +19 18 08.64 V T05
2023-09-10 13:08:43 C 03 15 50.837 +19 18 08.86 V T05
2023-09-10 13:10:40 C 03 15 50.779 +19 18 08.68 V T05
2023-09-10 13:17:11 C 03 15 50.609 +19 18 08.71 V T05
2023-09-10 13:18:29 C 03 15 50.573 +19 18 08.86 V T05
2023-09-12 12:48:25 C 03 14 30.278 +19 17 19.28 V T05
2023-09-12 12:55:51 C 03 14 30.012 +19 17 19.25 V T05
2023-09-12 13:00:09 C 03 14 29.909 +19 17 18.74 V T05
2023-09-12 13:07:37 C 03 14 29.674 +19 17 19.07 V T05
2023-09-13 07:01:37 C 03 13 57.456 +19 16 55.99 V W68
2023-09-13 07:04:12 C 03 13 57.398 +19 16 55.92 V W68
2023-09-13 07:08:46 C 03 13 57.214 +19 16 55.60 V W68
2023-09-13 07:38:31 C 03 13 56.287 +19 16 55.02 V W68
2023-09-16 08:41:04 C 03 11 33.716 +19 14 18.74 V 703
2023-09-16 08:48:12 C 03 11 33.472 +19 14 18.28 V 703
2023-09-16 08:55:19 C 03 11 33.212 +19 14 17.95 V 703
2023-09-16 09:02:26 C 03 11 32.960 +19 14 17.88 V 703
2023-09-16 09:29:49 C 03 11 31.988 +19 14 16.73 V G96
2023-09-16 09:37:13 C 03 11 31.726 +19 14 16.40 V G96
2023-09-16 09:44:37 C 03 11 31.459 +19 14 16.08 V G96
2023-09-16 09:52:00 C 03 11 31.196 +19 14 15.83 V G96
2023-09-16 14:37:42 C 03 11 21.146 +19 14 03.84 V T05
2023-09-16 15:01:36 C 03 11 20.297 +19 14 03.08 V T05