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
2022-10-28 14:34:51 C 08 31 26.887 +31 38 32.03 V T08
2022-10-28 14:48:13 C 08 31 27.813 +31 38 32.96 U F52
2022-10-28 15:05:29 C 08 31 29.009 +31 38 34.62 V T08
2022-10-28 15:05:33 C 08 31 29.002 +31 38 34.41 U F52
2022-10-28 15:08:32 C 08 31 29.213 +31 38 34.69 V T08
2022-10-28 15:16:23 C 08 31 29.743 +31 38 35.41 V T08
2022-10-28 15:20:46 C 08 31 30.048 +31 38 35.95 V T08
2022-10-29 09:39:26 C 08 32 47.422 +31 40 03.58 V 703
2022-10-29 09:47:14 C 08 32 47.972 +31 40 04.33 V 703
2022-10-29 09:55:02 C 08 32 48.512 +31 40 04.98 V 703
2022-10-29 10:02:51 C 08 32 49.052 +31 40 05.59 V 703
2022-10-29 13:59:41 C 08 33 05.664 +31 40 27.05 V T05
2022-10-29 14:04:15 C 08 33 05.988 +31 40 27.30 V T05
2022-10-29 14:08:49 C 08 33 06.302 +31 40 27.88 V T05
2022-10-29 14:16:39 C 08 33 06.842 +31 40 28.20 V T05
2022-10-30 14:37:56 C 08 34 49.848 +31 42 34.45 V T05
2022-10-30 14:42:29 C 08 34 50.174 +31 42 34.99 V T05
2022-10-30 15:04:12 C 08 34 51.670 +31 42 37.15 V T05
2022-10-30 15:09:27 C 08 34 52.042 +31 42 37.44 V T05
2022-10-30 15:29:39 C 08 34 53.446 +31 42 39.28 V T05
2022-10-31 14:48:21 C 08 36 32.472 +31 44 46.10 V T08
2022-10-31 14:49:01 C 08 36 32.527 +31 44 46.18 V T08
2022-10-31 14:51:01 C 08 36 32.678 +31 44 46.36 V T08
2022-10-31 14:51:41 C 08 36 32.714 +31 44 46.43 V T08
2022-10-31 15:21:07 C 08 36 34.747 +31 44 49.02 V T08
2022-10-31 15:21:49 C 08 36 34.790 +31 44 49.34 V T08
2022-10-31 15:25:22 C 08 36 35.033 +31 44 49.63 V T08
2022-10-31 15:26:02 C 08 36 35.090 +31 44 49.78 V T08
2022-11-01 09:57:09 C 08 37 54.174 +31 46 33.02 V 703
2022-11-01 10:04:19 C 08 37 54.671 +31 46 33.64 V 703
2022-11-01 10:11:28 C 08 37 55.157 +31 46 34.46 V 703
2022-11-01 10:18:39 C 08 37 55.664 +31 46 35.18 V 703
2022-11-01 13:34:56 C 08 38 09.641 +31 46 55.38 V T08
2022-11-01 13:35:36 C 08 38 09.691 +31 46 55.52 V T08
2022-11-01 13:38:57 C 08 38 09.926 +31 46 55.88 V T08
2022-11-01 13:46:56 C 08 38 10.478 +31 46 56.78 V T08
2022-11-01 14:09:11 C 08 38 12.041 +31 46 59.16 V T08
2022-11-01 14:10:30 C 08 38 12.132 +31 46 59.02 V T08
2022-11-01 14:13:50 C 08 38 12.377 +31 46 59.52 V T08
2022-11-01 14:34:42 C 08 38 13.807 +31 47 01.57 V T08
2022-11-02 14:12:05 C 08 39 54.926 +31 49 22.69 V T05
2022-11-02 14:16:38 C 08 39 55.236 +31 49 23.27 V T05
2022-11-02 14:27:23 C 08 39 55.985 +31 49 24.49 V T05
2022-11-02 14:59:54 C 08 39 58.253 +31 49 27.88 V T05
2022-11-02 15:00:20 C 08 39 58.284 +31 49 28.02 V T08
2022-11-02 15:09:11 C 08 39 58.901 +31 49 28.81 V T08
2022-11-02 15:12:33 C 08 39 59.146 +31 49 29.46 V T08
2022-11-02 15:22:12 C 08 39 59.813 +31 49 30.47 V T08
2022-11-04 14:56:56 C 08 43 24.794 +31 54 36.40 V T08
2022-11-04 15:01:44 C 08 43 25.128 +31 54 36.90 V T08