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
2024-11-03 16:27:33 B 04 00 09.62 +28 29 07.1 Z O56
2024-11-03 16:54:10 B 04 00 08.29 +28 29 06.3 Z O56
2024-11-04 23:35:18 B 03 58 44.23 +28 27 20.8 X K19
2024-11-04 23:40:39 B 03 58 43.98 +28 27 19.8 X K19
2024-11-04 23:45:58 B 03 58 43.70 +28 27 18.7 X K19
2024-11-06 15:43:54 C 03 56 52.44 +28 24 46.2 V D29
2024-11-06 16:04:16 C 03 56 51.35 +28 24 44.2 V D29
2024-11-06 16:24:37 C 03 56 50.51 +28 24 43.5 V D29
2024-11-07 15:09:51 C 03 55 46.39 +28 23 08.4 V D29
2024-11-07 15:30:13 C 03 55 45.40 +28 23 07.1 V D29
2024-11-07 15:50:34 C 03 55 44.43 +28 23 05.7 V D29
2024-11-09 12:55:52 C 03 53 35.518 +28 19 41.20 X F51
2024-11-09 13:11:44 C 03 53 34.741 +28 19 39.89 X F51
2024-11-09 13:35:41 C 03 53 33.575 +28 19 37.88 X F51
2024-11-10 19:06:24 C 03 52 08.30 +28 17 11.0 V D29
2024-11-10 19:26:46 C 03 52 07.31 +28 17 09.2 V D29
2024-11-10 19:47:08 C 03 52 06.25 +28 17 07.4 V D29
2024-11-11 09:50:07 C 03 51 25.661 +28 15 55.26 V T05
2024-11-11 09:52:43 C 03 51 25.512 +28 15 54.97 V T05
2024-11-11 09:57:16 C 03 51 25.286 +28 15 54.11 V T05
2024-11-11 10:05:05 C 03 51 24.919 +28 15 53.64 V T05
2024-11-11 13:02:55 C 03 51 16.37 +28 15 37.0 V D29
2024-11-11 13:17:57 C 03 51 15.65 +28 15 35.8 V D29
2024-11-11 13:32:59 C 03 51 14.91 +28 15 34.4 V D29
2024-11-13 05:01:56 C 03 49 19.268 +28 11 56.65 V G96
2024-11-13 05:09:57 C 03 49 18.887 +28 11 55.86 V G96
2024-11-13 05:17:58 C 03 49 18.494 +28 11 55.00 V G96
2024-11-13 05:25:59 C 03 49 18.088 +28 11 54.28 V G96
2024-11-19 11:10:50 C 03 41 53.203 +27 55 41.16 V T05
2024-11-19 11:16:46 C 03 41 52.939 +27 55 40.84 V T05
2024-11-19 11:25:18 C 03 41 52.524 +27 55 39.00 V T05
2024-11-19 11:41:45 C 03 41 51.631 +27 55 37.20 V T05
2024-11-21 09:35:01 C 03 39 34.700 +27 49 53.72 V G96
2024-11-21 09:42:23 C 03 39 34.326 +27 49 52.72 V G96
2024-11-21 09:49:47 C 03 39 33.952 +27 49 51.71 V G96
2024-11-21 09:57:10 C 03 39 33.584 +27 49 50.70 V G96
2024-11-21 11:00:10 C 03 39 30.466 +27 49 43.46 V T08
2024-11-21 11:05:43 C 03 39 30.290 +27 49 43.10 V T08
2024-11-21 11:14:22 C 03 39 29.770 +27 49 42.06 V T08
2024-11-21 11:28:53 C 03 39 29.098 +27 49 39.94 V T08
2024-11-26 19:14:07 C 03 33 10.937 +27 32 05.88 W M01
2024-11-26 20:20:10 C 03 33 07.660 +27 31 56.95 W M01
2024-11-27 09:42:50 C 03 32 28.546 +27 29 59.42 V T05
2024-11-27 10:30:42 C 03 32 26.083 +27 29 51.76 V T05
2024-11-27 10:34:53 C 03 32 25.910 +27 29 51.65 V T05
2024-11-27 10:44:07 C 03 32 25.435 +27 29 50.14 V T05
2024-11-29 20:14:00 B 03 29 39.01 +27 21 08.0 X K19
2024-11-29 20:19:25 B 03 29 38.73 +27 21 06.9 X K19
2024-11-29 20:24:56 B 03 29 38.40 +27 21 06.4 X K19
2024-12-03 10:21:52 C 03 25 35.112 +27 07 30.66 X F52