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
2023-10-26 03:09:18 C 02 20 20.734 +16 49 01.56 V W68
2023-10-26 03:11:55 C 02 20 20.594 +16 49 01.16 V W68
2023-10-26 03:16:32 C 02 20 20.266 +16 49 00.05 V W68
2023-10-26 03:33:39 C 02 20 19.198 +16 48 55.40 V W68
2023-10-31 14:27:03 C 02 12 18.29 +16 16 43.3 V O18
2023-10-31 14:37:00 C 02 12 17.69 +16 16 40.9 V O18
2023-10-31 14:46:56 C 02 12 17.08 +16 16 38.4 V O18
2023-11-01 09:10:23 C 02 11 10.727 +16 12 04.72 V 703
2023-11-01 09:17:56 C 02 11 10.259 +16 12 02.30 V 703
2023-11-01 09:25:30 C 02 11 09.769 +16 12 00.25 V 703
2023-11-01 09:33:04 C 02 11 09.352 +16 11 58.45 V 703
2023-11-03 08:01:07 C 02 08 24.536 +16 00 23.15 V 703
2023-11-03 08:08:33 C 02 08 24.097 +16 00 21.10 V 703
2023-11-03 08:15:59 C 02 08 23.665 +16 00 19.26 V 703
2023-11-03 08:23:24 C 02 08 23.194 +16 00 17.86 V 703
2023-11-03 10:21:55 C 02 08 16.349 +15 59 48.95 V T05
2023-11-03 10:26:01 C 02 08 16.099 +15 59 47.87 V T05
2023-11-03 10:33:53 C 02 08 15.614 +15 59 45.82 V T05
2023-11-03 10:48:19 C 02 08 14.782 +15 59 42.54 V T05
2023-11-04 07:41:27 C 02 07 01.837 +15 54 28.66 V G96
2023-11-04 07:48:48 C 02 07 01.409 +15 54 26.96 V G96
2023-11-04 07:56:10 C 02 07 00.977 +15 54 24.98 V G96
2023-11-04 08:03:32 C 02 07 00.541 +15 54 23.18 V G96
2023-11-04 14:56:26 C 02 06 36.782 +15 52 44.22 V P07
2023-11-04 15:49:21 C 02 06 33.684 +15 52 31.33 V P07
2023-11-04 16:42:16 C 02 06 30.562 +15 52 17.58 V P07
2023-11-04 17:23:35 C 02 06 28.121 +15 52 07.18 V P07
2023-11-05 06:45:33 C 02 05 42.169 +15 48 43.88 V 703
2023-11-05 06:53:19 C 02 05 41.752 +15 48 41.76 V 703
2023-11-05 07:01:05 C 02 05 41.266 +15 48 39.92 V 703
2023-11-05 07:08:46 C 02 05 40.808 +15 48 38.12 V 703
2023-11-05 10:06:53 C 02 05 30.648 +15 47 54.56 V T05
2023-11-05 10:11:26 C 02 05 30.362 +15 47 53.66 V T05
2023-11-05 10:21:20 C 02 05 29.789 +15 47 50.96 V T05
2023-11-05 10:35:41 C 02 05 28.956 +15 47 47.33 V T05
2023-11-06 04:16:57 C 02 04 28.663 +15 43 26.90 V W68
2023-11-06 04:24:18 C 02 04 28.210 +15 43 24.96 V W68
2023-11-06 04:38:45 C 02 04 27.370 +15 43 21.61 V W68
2023-11-07 06:20:54 C 02 03 00.788 +15 36 54.90 V 703
2023-11-07 06:29:51 C 02 03 00.266 +15 36 52.74 V 703
2023-11-07 06:37:39 C 02 02 59.813 +15 36 50.98 V 703
2023-11-07 06:45:27 C 02 02 59.395 +15 36 48.71 V 703
2023-11-09 07:15:18 C 02 00 19.436 +15 24 52.78 V 703
2023-11-09 07:23:01 C 02 00 19.012 +15 24 50.94 V 703
2023-11-09 07:30:44 C 02 00 18.598 +15 24 48.92 V 703
2023-11-09 07:38:27 C 02 00 18.166 +15 24 47.20 V 703
2023-11-11 04:39:46 C 01 57 54.443 +15 13 51.02 V 703
2023-11-11 04:47:44 C 01 57 54.004 +15 13 49.01 V 703
2023-11-11 04:55:42 C 01 57 53.593 +15 13 47.32 V 703
2023-11-11 05:03:43 C 01 57 53.154 +15 13 45.59 V 703