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
2025-12-08 22:35:36 B 06 31 23.772 +39 59 52.94 Z R52
2025-12-08 22:50:47 B 06 31 22.43 +39 59 58.7 X R93
2025-12-08 22:53:32 B 06 31 22.14 +39 59 59.5 X R93
2025-12-08 22:56:17 B 06 31 21.94 +40 00 00.5 X R93
2025-12-08 23:41:29 C 06 31 18.348 +40 00 18.47 V R17
2025-12-09 00:01:52 C 06 31 16.642 +40 00 26.21 V R17
2025-12-09 00:22:14 C 06 31 14.930 +40 00 34.06 V R17
2025-12-09 00:42:33 C 06 31 13.219 +40 00 41.58 V R17
2025-12-09 08:24:35 C 06 30 34.772 +40 03 32.83 V 703
2025-12-09 08:28:43 C 06 30 34.427 +40 03 34.70 V 703
2025-12-09 08:37:14 C 06 30 33.721 +40 03 37.62 V 703
2025-12-09 12:55:18 C 06 30 11.983 +40 05 14.39 V T08
2025-12-09 13:10:28 C 06 30 10.675 +40 05 19.67 X F52
2025-12-09 13:26:27 C 06 30 09.309 +40 05 25.44 X F52
2025-12-09 13:26:54 C 06 30 09.259 +40 05 25.94 V T08
2025-12-09 13:33:01 C 06 30 08.734 +40 05 28.03 V T08
2025-12-09 13:42:20 C 06 30 07.938 +40 05 31.20 X F52
2025-12-09 13:58:14 C 06 30 06.577 +40 05 36.91 X F52
2025-12-10 10:51:11 C 06 28 20.225 +40 13 16.79 V T08
2025-12-10 10:53:48 C 06 28 19.994 +40 13 17.72 V T08
2025-12-10 11:28:21 C 06 28 16.930 +40 13 30.29 V T08
2025-12-10 11:32:18 C 06 28 16.579 +40 13 31.69 V T08
2025-12-11 06:54:47 C 06 26 34.818 +40 20 29.69 V 703
2025-12-11 06:58:08 C 06 26 34.508 +40 20 30.44 V 703
2025-12-11 07:01:30 C 06 26 34.192 +40 20 31.99 V 703
2025-12-11 07:04:53 C 06 26 33.893 +40 20 33.18 V 703
2025-12-11 10:21:04 C 06 26 16.411 +40 21 44.68 V T08
2025-12-11 10:24:21 C 06 26 16.109 +40 21 45.94 V T08
2025-12-11 10:38:10 C 06 26 14.844 +40 21 50.90 V T08
2025-12-13 09:25:27 C 06 21 56.020 +40 38 09.02 V 703
2025-12-13 09:28:53 C 06 21 55.678 +40 38 10.21 V 703
2025-12-13 09:32:18 C 06 21 55.350 +40 38 11.26 V 703
2025-12-13 09:35:43 C 06 21 55.044 +40 38 12.88 V 703
2025-12-13 11:43:02 C 06 21 43.020 +40 38 57.52 V T05
2025-12-13 12:00:44 C 06 21 41.294 +40 39 03.35 V T05
2025-12-13 12:41:49 C 06 21 37.289 +40 39 17.24 V T05
2025-12-13 13:18:00 C 06 21 33.758 +40 39 29.30 V T05
2025-12-14 10:13:03 C 06 19 32.981 +40 46 30.25 V T08
2025-12-14 10:18:23 C 06 19 32.446 +40 46 31.98 V T08
2025-12-14 10:22:59 C 06 19 31.978 +40 46 33.46 V T08
2025-12-14 12:33:42 C 06 19 18.857 +40 47 16.44 V T08
2025-12-14 15:46:42 C 06 19 00.24 +40 48 18.6 V D29
2025-12-14 16:05:47 C 06 18 58.32 +40 48 24.9 V D29
2025-12-14 16:24:53 C 06 18 56.40 +40 48 31.2 V D29
2025-12-15 03:15:17 C 06 17 51.598 +40 52 00.12 Z C23
2025-12-15 03:25:03 C 06 17 50.621 +40 52 03.14 Z C23
2025-12-15 09:59:04 C 06 17 11.173 +40 54 12.67 V G96
2025-12-15 10:06:43 C 06 17 10.414 +40 54 15.05 V G96
2025-12-15 10:14:22 C 06 17 09.611 +40 54 17.46 V G96
2025-12-15 10:22:01 C 06 17 08.833 +40 54 19.73 V G96