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
2023-10-05 15:01:12 C 02 50 17.824 +18 29 07.93 X F52
2023-10-06 03:54:12 C 02 49 34.51 +18 27 07.1 X C95
2023-10-06 04:17:47 C 02 49 33.15 +18 27 02.9 X C95
2023-10-06 12:13:34 C 02 49 06.334 +18 25 47.53 V T05
2023-10-06 12:17:01 C 02 49 06.274 +18 25 49.40 V T05
2023-10-06 13:07:05 C 02 49 03.348 +18 25 40.98 V T05
2023-10-06 13:09:02 C 02 49 03.276 +18 25 40.98 V T05
2023-10-07 07:09:07 C 02 48 01.841 +18 22 50.81 V W68
2023-10-07 07:14:57 C 02 48 01.495 +18 22 49.73 V W68
2023-10-07 07:23:26 C 02 48 01.008 +18 22 47.93 V W68
2023-10-08 04:35:00 C 02 46 47.78 +18 19 11.6 X C95
2023-10-08 04:43:59 C 02 46 47.25 +18 19 10.4 X C95
2023-10-08 04:52:06 C 02 46 46.70 +18 19 11.8 X C95
2023-10-08 07:40:00 C 02 46 37.355 +18 18 42.23 V 703
2023-10-08 07:47:05 C 02 46 36.887 +18 18 41.94 V 703
2023-10-08 07:54:09 C 02 46 36.509 +18 18 40.03 V 703
2023-10-08 08:01:15 C 02 46 36.073 +18 18 38.95 V 703
2023-10-08 10:53:24 C 02 46 26.122 +18 18 10.48 V T05
2023-10-08 10:58:07 C 02 46 25.848 +18 18 09.61 V T05
2023-10-08 11:06:42 C 02 46 25.330 +18 18 08.28 V T05
2023-10-08 11:15:45 C 02 46 24.809 +18 18 06.62 V T05
2023-10-09 15:59:18 C 02 44 44.20 +18 13 04.9 o D54
2023-10-09 16:06:10 C 02 44 43.71 +18 13 05.4 o D54
2023-10-10 08:11:43 C 02 43 46.697 +18 10 15.28 V 703
2023-10-10 08:18:51 C 02 43 46.268 +18 10 14.16 V 703
2023-10-10 08:26:02 C 02 43 45.836 +18 10 12.65 V 703
2023-10-10 08:33:24 C 02 43 45.386 +18 10 10.67 V 703
2023-10-10 10:26:33 C 02 43 38.767 +18 09 52.16 V T05
2023-10-10 10:31:06 C 02 43 38.467 +18 09 51.16 V T05
2023-10-10 10:39:45 C 02 43 37.951 +18 09 49.54 V T05
2023-10-11 07:24:47 C 02 42 23.814 +18 06 01.48 V G96
2023-10-11 07:32:15 C 02 42 23.353 +18 06 00.18 V G96
2023-10-11 07:39:43 C 02 42 22.900 +18 05 58.78 V G96
2023-10-11 07:47:10 C 02 42 22.446 +18 05 57.30 V G96
2023-10-12 09:39:33 C 02 40 49.222 +18 01 07.13 X F52
2023-10-12 09:57:59 C 02 40 48.085 +18 01 03.66 X F52
2023-10-12 10:16:35 C 02 40 46.942 +18 01 00.16 X F52
2023-10-12 10:21:10 C 02 40 46.646 +18 00 59.36 V T05
2023-10-12 10:23:46 C 02 40 46.474 +18 00 59.00 V T05
2023-10-12 10:35:20 C 02 40 45.789 +18 00 56.65 X F52
2023-10-12 11:11:41 C 02 40 43.546 +18 00 49.75 V T05
2023-10-12 11:45:34 C 02 40 41.446 +18 00 43.24 V T05
2023-10-13 05:22:58 C 02 39 37.414 +17 57 22.82 V W68
2023-10-13 05:54:30 C 02 39 35.441 +17 57 16.99 V W68
2023-10-13 06:35:19 C 02 39 32.947 +17 57 09.76 V W68
2023-10-13 06:39:27 C 02 39 32.669 +17 57 08.57 V W68
2023-10-13 21:02:43 C 02 38 40.30 +17 54 13.7 X K83
2023-10-13 21:07:48 C 02 38 39.97 +17 54 12.8 X K83
2023-10-14 07:15:43 C 02 38 02.720 +17 52 13.04 V 703
2023-10-14 07:31:06 C 02 38 01.810 +17 52 08.58 V 703