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
2022-09-26 10:17:12 C 07 39 00.068 +31 08 36.13 V 703
2022-09-26 10:24:22 C 07 39 00.472 +31 08 35.74 V 703
2022-09-27 13:58:01 C 07 40 50.561 +31 09 02.92 V T05
2022-09-27 14:03:14 C 07 40 50.902 +31 09 03.06 V T05
2022-09-27 14:15:43 C 07 40 51.682 +31 09 03.49 V T05
2022-09-27 14:30:06 C 07 40 52.668 +31 09 03.49 V T05
2022-10-01 10:04:56 C 07 46 58.930 +31 10 39.07 V 703
2022-10-01 10:24:11 C 07 47 00.236 +31 10 39.65 V 703
2022-10-01 10:38:10 C 07 47 01.140 +31 10 40.30 V 703
2022-10-01 10:45:55 C 07 47 01.604 +31 10 40.80 V 703
2022-10-01 14:43:22 C 07 47 17.477 +31 10 46.06 V T05
2022-10-01 15:05:16 C 07 47 18.929 +31 10 46.52 V T05
2022-10-01 15:07:52 C 07 47 19.097 +31 10 46.34 V T05
2022-10-01 15:15:38 C 07 47 19.603 +31 10 46.63 V T05
2022-10-02 14:15:30 C 07 48 51.862 +31 11 13.81 V T05
2022-10-02 14:26:43 C 07 48 52.565 +31 11 14.28 V T05
2022-10-02 14:31:17 C 07 48 52.882 +31 11 14.60 V T05
2022-10-02 14:56:54 C 07 48 54.574 +31 11 15.07 V T05
2022-10-04 14:52:09 C 07 52 06.931 +31 12 16.81 V T08
2022-10-04 15:00:44 C 07 52 07.548 +31 12 17.21 V T08
2022-10-04 15:10:56 C 07 52 08.237 +31 12 17.24 V T08
2022-10-04 15:18:40 C 07 52 08.753 +31 12 16.85 V T08
2022-10-05 11:17:51 C 07 53 29.134 +31 12 43.92 V 703
2022-10-05 11:25:48 C 07 53 29.659 +31 12 44.21 V 703
2022-10-05 11:33:44 C 07 53 30.174 +31 12 44.39 V 703
2022-10-05 11:41:40 C 07 53 30.703 +31 12 44.53 V 703
2022-10-07 14:52:12 C 07 56 56.866 +31 14 02.04 V T08
2022-10-07 14:56:51 C 07 56 57.149 +31 14 02.26 V T08
2022-10-07 15:03:30 C 07 56 57.619 +31 14 02.15 V T08
2022-10-07 15:15:48 C 07 56 58.438 +31 14 02.69 V T08
2022-10-09 10:40:03 C 07 59 53.819 +31 15 13.28 V 703
2022-10-09 10:47:03 C 07 59 54.326 +31 15 13.50 V 703
2022-10-09 10:54:03 C 07 59 54.722 +31 15 14.08 V 703
2022-10-09 11:01:03 C 07 59 55.183 +31 15 14.08 V 703
2022-10-11 14:03:02 C 08 03 21.934 +31 16 49.44 V T08
2022-10-11 14:17:00 C 08 03 22.850 +31 16 49.51 V T08
2022-10-11 14:23:02 C 08 03 23.234 +31 16 50.45 V T08
2022-10-11 14:47:45 C 08 03 24.881 +31 16 50.81 V T08
2022-10-14 14:25:47 C 08 08 16.246 +31 19 22.98 V T05
2022-10-14 14:28:23 C 08 08 16.426 +31 19 23.05 V T05
2022-10-14 14:35:52 C 08 08 16.918 +31 19 23.84 V T05
2022-10-14 14:51:38 C 08 08 17.981 +31 19 24.20 V T05
2022-10-15 14:54:22 C 08 09 56.100 +31 20 21.19 V T05
2022-10-15 15:05:21 C 08 09 56.832 +31 20 21.73 V T05
2022-10-15 15:11:15 C 08 09 57.252 +31 20 22.24 V T05
2022-10-15 15:23:07 C 08 09 58.049 +31 20 22.34 V T05
2022-10-16 11:40:41 C 08 11 21.182 +31 21 11.95 V T08
2022-10-16 11:46:44 C 08 11 21.622 +31 21 11.63 V T08
2022-10-16 11:55:26 C 08 11 22.195 +31 21 12.53 V T08
2022-10-16 12:33:16 C 08 11 24.751 +31 21 14.00 V T08