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
2024-01-06 06:40:59 C 01 28 27.537 +12 41 12.22 X F51
2024-01-07 06:01:35 C 01 28 36.842 +12 41 58.45 V T05
2024-01-07 06:06:08 C 01 28 36.950 +12 41 58.78 V T05
2024-01-07 06:14:19 C 01 28 36.926 +12 41 58.99 V T05
2024-01-07 06:28:39 C 01 28 37.054 +12 41 59.06 V T05
2024-01-13 06:07:47 C 01 29 57.158 +12 48 53.03 V T08
2024-01-13 06:13:26 C 01 29 57.247 +12 48 53.21 V T08
2024-01-13 06:20:56 C 01 29 57.283 +12 48 54.40 V T08
2024-01-13 06:37:49 C 01 29 57.442 +12 48 55.66 V T08
2024-08-12 14:35:03 C 04 22 22.307 +26 34 02.83 X F52
2024-08-12 14:40:45 C 04 22 22.423 +26 34 03.50 X F52
2024-08-12 14:46:26 C 04 22 22.533 +26 34 04.13 X F52
2024-08-12 14:52:06 C 04 22 22.644 +26 34 04.74 X F52
2024-09-27 10:26:27 C 04 27 39.089 +28 16 42.82 V G96
2024-09-27 10:34:50 C 04 27 38.952 +28 16 43.43 V G96
2024-09-27 10:43:14 C 04 27 38.830 +28 16 43.97 V G96
2024-09-27 10:51:36 C 04 27 38.704 +28 16 44.65 V G96
2024-10-01 08:53:53 C 04 26 10.201 +28 22 30.97 V G96
2024-10-01 09:01:23 C 04 26 10.061 +28 22 31.48 V G96
2024-10-01 09:08:52 C 04 26 09.928 +28 22 31.91 V G96
2024-10-01 09:16:20 C 04 26 09.805 +28 22 32.38 V G96
2024-10-08 21:24:29 C 04 22 21.360 +28 31 17.41 W M01
2024-10-08 21:47:06 C 04 22 20.859 +28 31 19.50 W M01
2024-10-08 22:10:20 C 04 22 20.181 +28 31 20.85 W M01
2024-10-15 05:59:14 C 04 18 08.075 +28 35 57.95 V G96
2024-10-15 06:06:38 C 04 18 07.866 +28 35 58.13 V G96
2024-10-15 06:14:03 C 04 18 07.636 +28 35 58.27 V G96
2024-10-15 06:23:32 C 04 18 07.308 +28 35 58.70 V G96
2024-10-23 20:00:46 C 04 11 03.55 +28 37 16.3 V D29
2024-10-23 20:21:07 C 04 11 02.75 +28 37 15.9 V D29
2024-10-23 20:41:29 C 04 11 01.99 +28 37 15.8 V D29
2024-10-27 07:15:31 C 04 07 47.518 +28 35 55.61 V G96
2024-10-27 07:22:54 C 04 07 47.204 +28 35 55.54 V G96
2024-10-27 07:30:20 C 04 07 46.913 +28 35 55.39 V G96
2024-10-27 07:37:44 C 04 07 46.600 +28 35 55.32 V G96
2024-10-29 14:28:47 C 04 05 30.113 +28 34 24.06 X F51
2024-10-29 14:41:14 C 04 05 29.579 +28 34 23.64 X F51
2024-10-29 14:53:40 C 04 05 29.057 +28 34 23.19 X F51
2024-10-29 15:06:04 C 04 05 28.505 +28 34 22.75 X F51
2024-10-29 19:43:43 C 04 05 16.83 +28 34 13.3 V D29
2024-10-29 20:09:10 C 04 05 15.72 +28 34 12.3 V D29
2024-10-29 20:34:37 C 04 05 14.64 +28 34 11.4 V D29
2024-10-30 09:04:28 C 04 04 42.841 +28 33 45.61 V V00
2024-10-30 09:13:31 C 04 04 42.445 +28 33 45.36 V V00
2024-10-30 09:22:30 C 04 04 42.056 +28 33 45.00 V V00
2024-10-30 09:31:29 C 04 04 41.671 +28 33 44.68 V V00
2024-11-02 16:16:58 B 04 01 14.93 +28 30 22.0 Z O56
2024-11-02 16:32:37 B 04 01 14.22 +28 30 21.5 Z O56
2024-11-02 16:48:20 B 04 01 13.52 +28 30 20.8 Z O56
2024-11-03 16:01:06 B 04 00 10.75 +28 29 08.6 Z O56