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
2026-03-29 05:30:50 C 03 56 28.373 +30 55 17.44 V T05
2026-03-29 05:35:24 C 03 56 28.486 +30 55 16.21 V T05
2026-03-29 05:36:03 C 03 56 28.469 +30 55 15.24 V T05
2026-03-29 05:45:56 C 03 56 28.771 +30 55 13.08 V T05
2026-03-29 06:00:02 C 03 56 29.141 +30 55 08.87 V T05
2026-03-29 06:02:05 C 03 56 29.189 +30 55 08.15 V T05
2026-03-31 19:39:57 C 03 58 11.714 +30 37 13.15 Z C23
2026-03-31 19:53:43 C 03 58 12.058 +30 37 08.90 Z C23
2026-04-01 20:24:31 C 03 58 51.348 +30 29 38.87 Z C23
2026-04-01 20:45:44 C 03 58 51.866 +30 29 31.60 Z C23
2026-04-02 05:28:53 C 03 59 05.465 +30 26 53.84 V T08
2026-04-02 05:33:29 C 03 59 05.570 +30 26 52.30 V T08
2026-04-02 05:42:42 C 03 59 05.794 +30 26 49.27 V T08
2026-04-02 05:57:01 C 03 59 06.149 +30 26 44.48 V T08
2026-04-04 05:33:03 C 04 00 17.455 +30 11 09.20 V T05
2026-04-04 05:37:36 C 04 00 17.558 +30 11 07.48 V T05
2026-04-04 05:46:44 C 04 00 17.762 +30 11 04.27 V T05
2026-04-04 06:02:31 C 04 00 18.118 +30 10 58.69 V T05
2026-04-05 06:04:05 C 04 00 51.319 +30 02 36.02 V T05
2026-04-05 06:09:31 C 04 00 51.434 +30 02 33.90 V T05
2026-04-05 06:17:28 C 04 00 51.607 +30 02 30.95 V T05
2026-04-05 06:36:05 C 04 00 51.998 +30 02 23.68 V T05