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
2022-11-04 15:06:41 C 08 43 25.483 +31 54 37.44 V T08
2022-11-06 09:34:25 C 08 46 30.212 +31 59 33.65 V 703
2022-11-06 09:41:42 C 08 46 30.709 +31 59 34.84 V 703
2022-11-06 09:48:59 C 08 46 31.285 +31 59 35.74 V 703
2022-11-06 09:56:17 C 08 46 31.782 +31 59 36.67 V 703
2022-11-06 14:18:09 C 08 46 50.758 +32 00 10.55 V T05
2022-11-06 14:22:42 C 08 46 51.067 +32 00 11.05 V T05
2022-11-06 15:08:12 C 08 46 54.312 +32 00 16.92 V T05
2022-11-06 15:22:35 C 08 46 55.332 +32 00 18.86 V T05
2022-11-06 15:41:07 C 08 46 56.642 +32 00 21.02 V T05
2022-11-07 14:49:38 C 08 48 38.177 +32 03 16.20 V T05
2022-11-07 14:53:42 C 08 48 38.467 +32 03 16.67 V T05
2022-11-07 15:00:51 C 08 48 38.978 +32 03 17.75 V T05
2022-11-07 15:22:39 C 08 48 40.541 +32 03 20.52 V T05
2022-11-10 13:58:57 C 08 53 53.736 +32 13 06.24 V T05
2022-11-10 14:03:00 C 08 53 54.029 +32 13 06.96 V T05
2022-11-10 14:10:49 C 08 53 54.602 +32 13 08.04 V T05
2022-11-12 12:28:52 C 08 57 23.294 +32 20 16.84 V T08
2022-11-12 12:32:53 C 08 57 23.594 +32 20 17.38 V T08
2022-11-12 13:14:43 C 08 57 26.700 +32 20 24.65 V T08
2022-11-16 14:06:10 C 09 04 52.817 +32 37 34.32 V T08
2022-11-16 14:08:50 C 09 04 53.016 +32 37 34.86 V T08
2022-11-16 14:12:50 C 09 04 53.321 +32 37 35.62 V T08
2022-11-16 14:23:13 C 09 04 54.101 +32 37 37.74 V T08
2022-11-16 14:38:56 C 09 04 55.301 +32 37 40.66 V T05
2022-11-16 14:43:29 C 09 04 55.646 +32 37 41.59 V T05
2022-11-16 14:48:05 C 09 04 55.992 +32 37 42.56 V T05
2022-11-17 08:49:07 C 09 06 20.952 +32 41 12.84 V 703
2022-11-17 08:56:26 C 09 06 21.521 +32 41 14.21 V 703
2022-11-17 09:03:44 C 09 06 22.144 +32 41 15.65 V 703
2022-11-17 09:11:04 C 09 06 22.644 +32 41 17.34 V 703
2022-11-19 14:44:08 C 09 10 37.752 +32 52 36.59 V T05
2022-11-19 14:46:43 C 09 10 37.956 +32 52 37.20 V T05
2022-11-19 14:50:55 C 09 10 38.278 +32 52 38.10 V T05
2022-11-19 15:27:59 C 09 10 41.179 +32 52 46.42 V T05
2022-11-20 08:52:13 C 09 12 05.792 +32 56 38.33 V 703
2022-11-20 08:59:58 C 09 12 06.412 +32 56 40.27 V 703
2022-11-20 09:07:43 C 09 12 07.031 +32 56 42.04 V 703
2022-11-20 09:15:28 C 09 12 07.650 +32 56 43.91 V 703
2022-11-20 14:49:58 C 09 12 34.517 +32 58 03.68 V T08
2022-11-20 14:52:37 C 09 12 34.726 +32 58 04.37 V T08
2022-11-20 14:59:59 C 09 12 35.309 +32 58 06.02 V T08
2022-11-20 15:23:16 C 09 12 37.152 +32 58 11.57 V T08
2022-11-20 15:39:36 C 09 12 38.431 +32 58 15.24 V T08
2022-11-21 14:42:31 C 09 14 31.498 +33 03 42.01 V T08
2022-11-21 14:54:56 C 09 14 32.486 +33 03 45.18 V T08
2022-11-21 14:59:35 C 09 14 32.861 +33 03 46.22 V T08
2022-11-21 15:13:47 C 09 14 33.986 +33 03 49.79 V T08
2022-11-23 10:11:08 C 09 18 08.136 +33 14 34.80 V 703
2022-11-23 10:18:57 C 09 18 08.773 +33 14 36.96 V 703