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
2025-12-16 06:24:49 C 06 15 06.998 +41 00 39.42 V 703
2025-12-16 06:28:10 C 06 15 06.649 +41 00 40.57 V 703
2025-12-16 06:31:31 C 06 15 06.318 +41 00 41.83 V 703
2025-12-16 06:34:52 C 06 15 05.904 +41 00 40.61 V 703
2025-12-18 06:45:13 C 06 10 00.960 +41 15 02.80 V G96
2025-12-18 06:52:45 C 06 10 00.120 +41 15 05.00 V G96
2025-12-18 07:00:18 C 06 09 59.290 +41 15 07.20 V G96
2025-12-18 07:07:51 C 06 09 58.453 +41 15 09.36 V G96
2025-12-19 21:49:21 C 06 05 42.854 +41 25 39.25 Z C23
2025-12-19 22:36:40 C 06 05 37.478 +41 25 51.74 Z C23
2025-12-21 19:48:22 C 06 00 27.521 +41 36 54.25 Z C23
2025-12-21 19:59:50 C 06 00 26.162 +41 36 56.99 Z C23
2025-12-21 20:11:04 C 06 00 24.835 +41 36 59.69 Z C23
2025-12-23 22:34:40 B 05 54 25.606 +41 47 35.38 Z R92
2025-12-23 22:56:14 B 05 54 22.963 +41 47 39.70 Z R92
2025-12-23 23:17:47 B 05 54 20.328 +41 47 43.73 Z R92
2025-12-24 22:33:02 B 05 51 30.490 +41 51 55.76 Z R92
2025-12-24 22:54:35 B 05 51 27.804 +41 51 59.69 Z R92
2025-12-24 23:16:09 B 05 51 25.126 +41 52 03.36 Z R92
2025-12-25 09:52:15 C 05 50 06.886 +41 53 53.12 V T05
2025-12-25 09:56:58 C 05 50 06.288 +41 53 53.99 V T05
2025-12-25 10:06:55 C 05 50 05.030 +41 53 55.57 V T05
2025-12-25 10:55:33 C 05 49 58.896 +41 54 03.28 V T05
2025-12-25 20:30:45 C 05 48 48.115 +41 55 28.49 Z C23
2025-12-25 22:20:14 B 05 48 34.260 +41 55 45.88 Z R92
2025-12-25 22:25:17 C 05 48 33.638 +41 55 47.24 Z C23
2025-12-25 22:41:48 B 05 48 31.548 +41 55 49.69 Z R92
2025-12-25 23:03:23 B 05 48 28.788 +41 55 52.97 Z R92
2025-12-26 18:12:44 B 05 46 05.668 +41 58 34.98 V 160
2025-12-26 18:16:35 B 05 46 05.165 +41 58 36.05 V 160
2025-12-26 18:21:09 B 05 46 04.561 +41 58 37.07 V 160
2025-12-26 18:29:14 C 05 46 03.535 +41 58 37.13 Z C23
2025-12-26 18:59:55 C 05 45 59.657 +41 58 41.16 Z C23
2025-12-26 20:33:22 B 05 45 47.85 +41 58 55.8 X R93
2025-12-26 20:34:23 B 05 45 47.67 +41 58 55.9 X R93
2025-12-26 20:35:24 B 05 45 47.54 +41 58 55.9 X R93
2025-12-26 20:38:27 B 05 45 47.17 +41 58 55.7 X R93
2025-12-26 22:05:58 C 05 45 35.981 +41 59 08.30 X M26
2025-12-26 22:11:01 C 05 45 35.318 +41 59 08.88 X M26
2025-12-26 22:16:05 C 05 45 34.658 +41 59 09.71 X M26
2025-12-27 02:22:05 B 05 45 03.319 +41 59 40.13 q Y84
2025-12-27 02:24:48 B 05 45 02.986 +41 59 40.34 q Y84
2025-12-27 02:27:30 B 05 45 02.645 +41 59 40.70 q Y84
2025-12-27 21:19:03 B 05 42 39.859 +42 01 54.59 V L65
2025-12-27 21:23:11 B 05 42 39.312 +42 01 55.13 V L65
2025-12-27 21:27:19 B 05 42 38.772 +42 01 55.63 V L65
2025-12-27 23:09:25 B 05 42 25.709 +42 02 07.76 q Y84
2025-12-27 23:14:07 B 05 42 25.099 +42 02 08.12 q Y84
2025-12-27 23:18:48 B 05 42 24.475 +42 02 08.70 q Y84
2025-12-28 05:05:58 B 05 41 40.099 +42 02 44.95 W X04