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
2023-01-21 02:10:37 C 17 19 39.00 +24 32 53.5 c M31
2023-01-21 12:57:49 C 17 26 32.003 +23 16 53.36 V 703
2023-01-21 13:03:36 C 17 26 35.603 +23 16 12.65 V 703
2023-01-21 13:09:23 C 17 26 39.188 +23 15 33.12 V 703
2023-01-21 13:15:10 C 17 26 42.774 +23 14 51.32 V 703
2023-07-01 09:58:27 C 02 53 09.319 +15 35 33.90 V W68
2023-07-01 09:59:45 C 02 53 09.365 +15 35 34.22 V W68
2023-07-01 10:03:45 C 02 53 09.521 +15 35 34.66 V W68
2023-07-01 10:06:22 C 02 53 09.662 +15 35 35.74 V W68
2023-07-01 10:13:15 C 02 53 09.958 +15 35 37.90 V W68
2023-07-01 10:13:54 C 02 53 09.974 +15 35 37.64 V W68
2023-07-01 10:23:08 C 02 53 10.390 +15 35 40.45 V W68
2023-07-01 10:23:47 C 02 53 10.435 +15 35 40.52 V W68
2023-07-14 14:19:38 C 03 05 47.388 +16 50 13.78 V T05
2023-07-14 14:25:34 C 03 05 47.546 +16 50 15.79 V T05
2023-07-14 14:41:39 C 03 05 48.103 +16 50 18.20 V T05
2023-07-14 14:53:23 C 03 05 48.511 +16 50 21.48 V T05
2023-07-15 09:24:08 C 03 06 27.221 +16 54 16.78 V W68
2023-07-15 10:04:41 C 03 06 28.589 +16 54 25.85 V W68
2023-07-15 10:21:37 C 03 06 29.182 +16 54 29.52 V W68
2023-07-24 14:27:20 C 03 13 17.155 +17 36 43.49 V T05
2023-07-24 14:33:14 C 03 13 17.273 +17 36 44.53 V T05
2023-07-24 14:44:12 C 03 13 17.582 +17 36 46.51 V T05
2023-07-24 14:52:53 C 03 13 17.777 +17 36 47.99 V T05
2023-07-26 14:30:05 C 03 14 32.801 +17 45 00.54 V T05
2023-07-26 14:35:58 C 03 14 32.851 +17 45 01.51 V T05
2023-07-26 14:43:35 C 03 14 33.108 +17 45 03.10 V T05
2023-07-26 14:59:58 C 03 14 33.468 +17 45 05.18 V T05
2023-07-28 14:28:49 C 03 15 43.241 +17 52 57.07 V T05
2023-07-28 14:43:03 C 03 15 43.574 +17 52 58.84 V T05
2023-07-28 14:48:57 C 03 15 43.735 +17 53 00.24 V T05
2023-07-28 15:04:32 C 03 15 44.136 +17 53 02.65 V T05
2023-07-30 14:22:59 C 03 16 48.516 +18 00 31.97 V T05
2023-07-30 14:54:09 C 03 16 49.178 +18 00 36.76 V T05
2023-07-30 14:58:04 C 03 16 49.265 +18 00 37.55 V T05
2023-07-30 15:03:55 C 03 16 49.394 +18 00 38.34 V T05
2023-08-05 13:36:09 C 03 19 31.966 +18 21 16.09 V T05
2023-08-05 13:40:42 C 03 19 32.081 +18 21 17.17 V T05
2023-08-05 14:05:00 C 03 19 32.407 +18 21 20.20 V T05
2023-08-05 14:13:27 C 03 19 32.542 +18 21 21.24 V T05
2023-08-15 14:00:52 C 03 22 10.560 +18 49 20.89 V T05
2023-08-15 14:05:26 C 03 22 10.560 +18 49 21.61 V T05
2023-08-15 14:23:02 C 03 22 10.666 +18 49 23.59 V T05
2023-08-15 14:40:24 C 03 22 10.685 +18 49 25.03 V T05
2023-08-19 13:24:07 C 03 22 29.686 +18 58 03.04 V T05
2023-08-19 13:28:11 C 03 22 29.678 +18 58 03.54 V T05
2023-08-19 14:01:20 C 03 22 29.669 +18 58 06.20 V T05
2023-08-19 14:09:12 C 03 22 29.695 +18 58 07.21 V T05
2023-08-21 13:33:47 C 03 22 29.287 +19 01 53.76 V T05
2023-08-21 13:38:21 C 03 22 29.254 +19 01 53.98 V T05