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
2024-12-03 10:37:34 C 03 25 34.373 +27 07 28.07 X F52
2024-12-03 10:53:11 C 03 25 33.638 +27 07 25.49 X F52
2024-12-03 11:08:51 C 03 25 32.900 +27 07 22.91 X F52
2024-12-05 05:08:24 C 03 23 37.360 +27 00 29.84 V G96
2024-12-05 05:16:31 C 03 23 36.989 +27 00 28.51 V G96
2024-12-05 05:24:36 C 03 23 36.614 +27 00 27.14 V G96
2024-12-05 05:32:40 C 03 23 36.240 +27 00 25.74 V G96
2024-12-07 06:21:04 C 03 21 24.930 +26 52 17.80 X F51
2024-12-07 06:24:46 C 03 21 24.762 +26 52 17.04 X F51
2024-12-07 06:36:01 C 03 21 24.247 +26 52 15.43 X F51
2024-12-07 06:39:44 C 03 21 24.078 +26 52 14.77 X F51
2024-12-07 06:51:02 C 03 21 23.571 +26 52 12.91 X F51
2024-12-07 06:54:45 C 03 21 23.403 +26 52 12.30 X F51
2024-12-07 07:06:05 C 03 21 22.893 +26 52 10.46 X F51
2024-12-07 07:09:52 C 03 21 22.721 +26 52 09.83 X F51
2024-12-09 08:52:14 C 03 19 12.487 +26 43 45.16 V T05
2024-12-09 09:10:02 C 03 19 11.729 +26 43 41.23 V T05
2024-12-09 09:14:38 C 03 19 11.520 +26 43 41.09 V T05
2024-12-09 09:22:29 C 03 19 11.102 +26 43 39.14 V T05
2024-12-20 09:07:56 C 03 08 54.454 +25 58 22.73 V T08
2024-12-20 09:12:46 C 03 08 54.281 +25 58 21.50 V T08
2024-12-20 09:20:49 C 03 08 54.012 +25 58 20.64 V T08
2024-12-20 09:35:32 C 03 08 53.453 +25 58 17.69 V T08
2024-12-20 10:00:34 C 03 08 52.609 +25 58 13.18 X F51
2024-12-20 10:25:33 C 03 08 51.734 +25 58 08.83 X F51
2024-12-20 10:42:37 C 03 08 51.132 +25 58 05.94 X F51
2024-12-20 10:59:43 C 03 08 50.528 +25 58 03.00 X F51
2024-12-21 08:38:08 C 03 08 06.286 +25 54 23.54 V T05
2024-12-21 08:42:46 C 03 08 06.084 +25 54 23.11 V T05
2024-12-21 08:50:07 C 03 08 05.906 +25 54 21.49 V T05
2024-12-21 09:05:53 C 03 08 05.333 +25 54 18.79 V T05
2024-12-21 11:31:53 C 03 08 00.55 +25 53 53.8 V D29
2024-12-21 11:33:09 C 03 08 00.51 +25 53 53.5 V D29
2024-12-21 11:52:14 C 03 07 59.84 +25 53 50.4 V D29
2024-12-21 11:53:31 C 03 07 59.81 +25 53 50.1 V D29
2024-12-21 12:12:36 C 03 07 59.14 +25 53 46.8 V D29
2024-12-21 12:13:53 C 03 07 59.09 +25 53 46.6 V D29
2024-12-22 08:07:51 C 03 07 19.318 +25 50 27.02 V T05
2024-12-22 08:12:32 C 03 07 19.159 +25 50 25.55 V T05
2024-12-22 08:20:26 C 03 07 18.914 +25 50 24.29 V T05
2024-12-22 08:35:38 C 03 07 18.355 +25 50 22.20 V T05
2024-12-23 09:16:24 C 03 06 30.266 +25 46 14.84 V T08
2024-12-23 09:21:46 C 03 06 30.122 +25 46 14.20 V T08
2024-12-23 09:30:24 C 03 06 29.786 +25 46 13.44 V T08
2024-12-23 09:45:17 C 03 06 29.354 +25 46 09.80 V T08
2024-12-29 08:22:11 C 03 02 18.987 +25 23 11.71 X F51
2024-12-29 08:38:55 C 03 02 18.533 +25 23 09.13 X F51
2024-12-29 08:55:59 C 03 02 18.065 +25 23 06.47 X F51
2024-12-29 09:12:48 C 03 02 17.615 +25 23 03.80 X F51
2024-12-31 15:02:06 C 03 00 55.55 +25 14 50.6 V D29