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
2023-09-16 15:06:09 C 03 11 20.117 +19 14 03.05 V T05
2023-09-16 15:14:03 C 03 11 19.841 +19 14 02.69 V T05
2023-09-18 12:29:01 C 03 09 41.940 +19 11 48.30 V T05
2023-09-18 12:32:46 C 03 09 41.813 +19 11 47.83 V T05
2023-09-18 12:37:19 C 03 09 41.654 +19 11 47.33 V T05
2023-09-18 12:45:32 C 03 09 41.294 +19 11 47.11 V T05
2023-09-19 09:24:53 C 03 08 54.366 +19 10 35.11 V 703
2023-09-19 09:32:44 C 03 08 54.049 +19 10 34.68 V 703
2023-09-19 09:48:18 C 03 08 53.336 +19 10 32.99 V 703
2023-09-20 12:20:30 C 03 07 51.101 +19 08 54.49 V T05
2023-09-20 12:23:09 C 03 07 51.022 +19 08 53.99 V T05
2023-09-20 12:27:39 C 03 07 50.820 +19 08 53.81 V T05
2023-09-20 13:05:43 C 03 07 49.274 +19 08 51.68 V T05
2023-09-23 09:12:35 C 03 04 59.182 +19 03 47.27 V 703
2023-09-23 09:20:16 C 03 04 58.782 +19 03 46.08 V 703
2023-09-23 09:27:58 C 03 04 58.458 +19 03 45.83 V 703
2023-09-23 09:35:40 C 03 04 58.130 +19 03 45.14 V 703
2023-09-24 13:18:51 C 03 03 44.830 +19 01 23.56 V T05
2023-09-24 13:24:14 C 03 03 44.566 +19 01 22.58 V T05
2023-09-24 13:33:12 C 03 03 44.165 +19 01 22.30 V T05
2023-09-24 13:48:29 C 03 03 43.459 +19 01 20.57 V T05
2023-09-25 03:53:55 C 03 03 05.614 +19 00 08.21 V W68
2023-09-25 03:58:31 C 03 03 05.422 +19 00 06.48 V W68
2023-09-25 04:49:38 C 03 03 03.038 +19 00 01.73 V W68
2023-09-25 04:53:35 C 03 03 02.818 +19 00 01.30 V W68
2023-09-25 09:04:58 C 03 02 51.277 +18 59 33.97 V 703
2023-09-25 09:12:03 C 03 02 50.960 +18 59 33.58 V 703
2023-09-25 09:19:08 C 03 02 50.622 +18 59 32.50 V 703
2023-09-25 09:26:15 C 03 02 50.284 +18 59 31.74 V 703
2023-09-26 10:42:51 C 03 01 40.210 +18 57 05.34 X F52
2023-09-26 11:01:17 C 03 01 39.329 +18 57 03.57 X F52
2023-09-26 11:38:10 C 03 01 37.556 +18 56 59.95 X F52
2023-09-26 11:42:54 C 03 01 37.325 +18 56 59.57 V T05
2023-09-26 11:45:30 C 03 01 37.195 +18 56 59.32 V T05
2023-09-26 11:49:37 C 03 01 36.991 +18 56 58.88 V T05
2023-09-26 11:57:26 C 03 01 36.624 +18 56 58.13 V T05
2023-09-27 07:29:35 C 03 00 41.177 +18 54 56.59 V 703
2023-09-27 07:37:00 C 03 00 40.828 +18 54 55.48 V 703
2023-09-27 07:44:26 C 03 00 40.460 +18 54 54.65 V 703
2023-09-27 07:51:52 C 03 00 40.043 +18 54 54.04 V 703
2023-09-29 00:48:46 C 02 58 40.13 +18 50 23.3 X C95
2023-09-29 01:01:26 C 02 58 39.55 +18 50 21.5 X C95
2023-09-29 01:14:07 C 02 58 38.89 +18 50 19.7 X C95
2023-10-04 13:02:33 C 02 51 44.321 +18 33 02.70 V T05
2023-10-04 13:07:07 C 02 51 44.081 +18 33 02.45 V T05
2023-10-04 13:14:56 C 02 51 43.610 +18 33 00.58 V T05
2023-10-04 14:04:35 C 02 51 40.819 +18 32 53.12 V T05
2023-10-05 14:25:22 C 02 50 19.859 +18 29 13.50 X F52
2023-10-05 14:37:18 C 02 50 19.182 +18 29 11.63 X F52
2023-10-05 14:49:17 C 02 50 18.500 +18 29 09.79 X F52