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
2022-10-19 13:43:14 C 08 16 24.934 +31 24 37.73 V T08
2022-10-19 13:47:14 C 08 16 25.195 +31 24 37.91 V T08
2022-10-19 14:33:14 C 08 16 28.301 +31 24 40.43 V T08
2022-10-20 09:33:45 C 08 17 46.705 +31 25 37.27 V 703
2022-10-20 09:41:00 C 08 17 47.180 +31 25 37.70 V 703
2022-10-20 09:48:17 C 08 17 47.695 +31 25 37.99 V 703
2022-10-20 09:55:33 C 08 17 48.178 +31 25 38.60 V 703
2022-10-20 11:03:43 C 08 17 52.804 +31 25 42.56 V G96
2022-10-20 11:11:14 C 08 17 53.315 +31 25 43.03 V G96
2022-10-20 11:18:44 C 08 17 53.812 +31 25 43.28 V G96
2022-10-20 11:26:14 C 08 17 54.330 +31 25 43.72 V G96
2022-10-20 14:30:11 C 08 18 06.970 +31 25 54.59 V T08
2022-10-20 14:35:30 C 08 18 07.346 +31 25 54.77 V T08
2022-10-20 14:42:50 C 08 18 07.834 +31 25 55.38 V T08
2022-10-20 15:04:18 C 08 18 09.283 +31 25 56.68 V T08
2022-10-20 15:18:31 C 08 18 10.241 +31 25 57.43 V T08
2022-10-21 14:48:06 C 08 19 47.297 +31 27 13.79 V T08
2022-10-21 14:53:26 C 08 19 47.647 +31 27 14.40 V T08
2022-10-21 15:04:09 C 08 19 48.425 +31 27 15.05 V T08
2022-10-21 15:20:22 C 08 19 49.519 +31 27 15.77 V T08
2022-10-23 14:27:09 C 08 23 04.750 +31 30 02.30 V T08
2022-10-23 14:31:09 C 08 23 05.021 +31 30 02.52 V T08
2022-10-23 14:39:08 C 08 23 05.551 +31 30 03.10 V T08
2022-10-23 15:03:30 C 08 23 07.226 +31 30 04.79 V T08
2022-10-23 15:21:05 C 08 23 08.419 +31 30 05.83 V T08
2022-10-24 14:13:23 C 08 24 43.606 +31 31 32.88 V T08
2022-10-24 14:37:13 C 08 24 45.235 +31 31 34.61 V T08
2022-10-24 15:04:57 C 08 24 47.114 +31 31 36.55 V T08
2022-10-24 15:21:59 C 08 24 48.276 +31 31 37.70 V T08
2022-10-25 04:53:56 S 08 25 44.39 +31 32 30.9 L C51
2022-10-25 08:01:42 S 08 25 57.40 +31 32 44.4 L C51
2022-10-25 14:17:03 S 08 26 23.53 +31 33 09.8 L C51
2022-10-25 17:24:49 S 08 26 36.569 +31 33 23.18 L C51
2022-10-25 20:32:35 S 08 26 49.71 +31 33 36.0 L C51
2022-10-25 23:40:21 S 08 27 02.743 +31 33 49.32 L C51
2022-10-26 02:47:12 S 08 27 15.72 +31 34 02.5 L C51
2022-10-26 02:47:24 S 08 27 15.78 +31 34 02.0 L C51
2022-10-26 04:21:50 S 08 27 22.26 +31 34 08.7 L C51
2022-10-26 07:29:35 S 08 27 35.41 +31 34 21.9 L C51
2022-10-26 09:35:13 C 08 27 44.611 +31 34 28.99 V 703
2022-10-26 09:42:23 C 08 27 45.130 +31 34 29.71 V 703
2022-10-26 09:49:33 C 08 27 45.623 +31 34 30.18 V 703
2022-10-26 09:56:44 C 08 27 46.116 +31 34 30.68 V 703
2022-10-26 10:36:38 S 08 27 48.43 +31 34 35.8 L C51
2022-10-26 13:44:57 S 08 28 01.495 +31 34 47.96 L C51
2022-10-28 14:13:37 C 08 31 25.432 +31 38 30.02 U F52
2022-10-28 14:22:34 C 08 31 26.062 +31 38 30.84 V T08
2022-10-28 14:26:33 C 08 31 26.330 +31 38 31.34 V T08
2022-10-28 14:30:55 C 08 31 26.624 +31 38 31.49 U F52
2022-10-28 14:31:28 C 08 31 26.647 +31 38 31.67 V T08