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
2026-02-14 12:47:45 C 03 49 51.656 +36 12 02.75 V D29
2026-02-19 07:06:22 C 03 46 43.003 +35 25 33.56 V T08
2026-02-19 07:10:59 C 03 46 42.895 +35 25 31.76 V T08
2026-02-19 07:18:53 C 03 46 42.713 +35 25 28.52 V T08
2026-02-19 07:33:29 C 03 46 42.370 +35 25 22.66 V T08
2026-02-19 21:34:59 B 03 46 24.917 +35 19 53.76 X J51
2026-02-19 22:05:26 B 03 46 24.264 +35 19 41.77 X J51
2026-02-19 22:35:53 B 03 46 23.602 +35 19 29.57 X J51
2026-02-21 02:26:17 B 03 45 52.435 +35 08 45.24 W X04
2026-02-21 02:30:31 B 03 45 52.375 +35 08 43.91 W X04
2026-02-21 02:36:22 B 03 45 52.277 +35 08 41.64 W X04
2026-02-21 02:40:36 B 03 45 52.128 +35 08 39.34 W X04
2026-02-21 06:08:42 C 03 45 48.737 +35 07 26.29 V T05
2026-02-21 06:12:39 C 03 45 48.646 +35 07 24.71 V T05
2026-02-21 06:20:29 C 03 45 48.506 +35 07 21.72 V T05
2026-02-21 06:41:05 C 03 45 48.113 +35 07 13.66 V T05
2026-02-25 06:31:45 C 03 44 36.118 +34 32 12.66 V T08
2026-02-25 06:36:29 C 03 44 36.077 +34 32 10.90 V T08
2026-02-25 07:14:08 C 03 44 35.700 +34 31 57.14 V T08
2026-02-25 17:59:47 B 03 44 31.026 +34 28 09.04 V 160
2026-02-25 18:02:56 B 03 44 31.003 +34 28 07.76 V 160
2026-02-25 18:05:57 B 03 44 30.976 +34 28 06.75 V 160
2026-02-25 19:12:50 B 03 44 30.485 +34 27 42.91 q Y84
2026-02-25 19:15:51 C 03 44 30.410 +34 27 41.04 Z C23
2026-02-25 19:20:05 B 03 44 30.422 +34 27 40.32 q Y84
2026-02-25 19:26:50 B 03 44 30.343 +34 27 37.94 q Y84
2026-02-25 20:03:30 C 03 44 30.012 +34 27 24.12 Z C23
2026-02-27 19:14:27 B 03 44 15.535 +34 11 16.48 W G34
2026-02-27 19:17:03 B 03 44 15.521 +34 11 15.62 W G34
2026-02-27 19:22:16 B 03 44 15.504 +34 11 13.96 W G34
2026-02-27 19:32:40 B 03 44 15.465 +34 11 10.26 W G34
2026-02-28 06:19:28 C 03 44 13.601 +34 07 38.39 V T05
2026-02-28 06:38:38 C 03 44 13.514 +34 07 31.76 V T05
2026-02-28 06:43:13 C 03 44 13.490 +34 07 30.22 V T05
2026-02-28 06:51:06 C 03 44 13.457 +34 07 27.48 V T05
2026-02-28 21:23:46 C 03 44 12.065 +34 02 34.58 Z C23
2026-02-28 22:32:29 C 03 44 11.976 +34 02 11.00 Z C23
2026-03-02 18:54:27 B 03 44 13.932 +33 47 55.10 X Y84
2026-03-02 19:06:37 B 03 44 13.922 +33 47 51.04 X Y84
2026-03-02 19:20:28 B 03 44 13.930 +33 47 46.54 X Y84
2026-03-02 19:21:43 C 03 44 13.946 +33 47 45.64 Z C23
2026-03-02 19:41:59 B 03 44 13.958 +33 47 39.59 X Y84
2026-03-02 19:54:07 B 03 44 13.970 +33 47 35.63 X Y84
2026-03-02 20:02:55 C 03 44 13.951 +33 47 32.42 Z C23
2026-03-02 20:07:54 B 03 44 13.980 +33 47 31.20 X Y84
2026-03-03 20:40:48 B 03 44 18.773 +33 39 48.56 Z 185
2026-03-03 21:03:41 B 03 44 18.857 +33 39 41.15 Z 185
2026-03-03 21:26:14 B 03 44 18.929 +33 39 33.73 Z 185
2026-03-03 21:49:42 C 03 44 19.061 +33 39 26.10 Z C23
2026-03-03 22:06:56 C 03 44 19.135 +33 39 20.77 Z C23