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
2022-11-23 10:26:47 C 09 18 09.428 +33 14 38.90 V 703
2022-11-23 10:34:37 C 09 18 10.069 +33 14 41.10 V 703
2022-11-24 13:25:23 C 09 20 26.278 +33 21 54.07 V T08
2022-11-24 14:05:44 C 09 20 29.609 +33 22 05.38 V T08
2022-11-24 14:20:44 C 09 20 30.847 +33 22 09.59 V T08
2022-11-24 15:44:18 C 09 20 37.762 +33 22 32.77 V T08
2022-11-25 13:10:28 C 09 22 28.450 +33 28 33.20 V T08
2022-11-25 13:11:48 C 09 22 28.574 +33 28 33.60 V T08
2022-11-25 13:13:07 C 09 22 28.685 +33 28 34.07 V T08
2022-11-25 13:17:27 C 09 22 29.040 +33 28 35.29 V T08
2022-11-25 13:20:09 C 09 22 29.270 +33 28 36.05 V T08
2022-11-25 13:25:10 C 09 22 29.688 +33 28 37.60 V T08
2022-11-25 13:27:10 C 09 22 29.868 +33 28 38.17 V T08
2022-11-25 13:33:09 C 09 22 30.362 +33 28 39.97 V T08
2022-11-26 08:11:11 C 09 24 07.614 +33 34 01.85 V 703
2022-11-26 08:18:21 C 09 24 08.240 +33 34 04.15 V 703
2022-11-26 08:25:31 C 09 24 08.860 +33 34 06.46 V 703
2022-11-26 08:32:41 C 09 24 09.464 +33 34 08.69 V 703
2022-11-26 10:15:26 C 09 24 18.281 +33 34 40.33 V G96
2022-11-26 10:22:55 C 09 24 18.918 +33 34 42.67 V G96
2022-11-26 10:30:23 C 09 24 19.555 +33 34 44.87 V G96
2022-11-26 10:37:51 C 09 24 20.192 +33 34 47.17 V G96
2022-11-26 14:01:08 C 09 24 37.961 +33 35 49.63 V T05
2022-11-26 14:04:24 C 09 24 38.239 +33 35 50.68 V T05
2022-11-26 14:08:57 C 09 24 38.616 +33 35 52.04 V T05
2022-11-26 14:33:06 C 09 24 40.682 +33 35 59.35 V T05
2022-11-26 15:01:02 C 09 24 43.051 +33 36 08.06 V T08
2022-11-26 15:25:44 C 09 24 45.151 +33 36 15.52 V T08
2022-11-26 15:43:20 C 09 24 46.644 +33 36 20.88 V T08
2022-11-26 15:46:30 C 09 24 46.910 +33 36 21.74 V T08
2022-11-29 08:22:40 C 09 30 34.776 +33 56 50.46 V 703
2022-11-29 08:30:28 C 09 30 35.489 +33 56 53.16 V 703
2022-11-29 08:38:16 C 09 30 36.191 +33 56 55.93 V 703
2022-11-29 08:46:06 C 09 30 36.904 +33 56 58.60 V 703
2022-11-30 12:38:54 C 09 33 11.762 +34 06 38.56 V T05
2022-11-30 12:43:34 C 09 33 12.197 +34 06 40.18 V T05
2022-11-30 12:51:28 C 09 33 12.912 +34 06 43.20 V T05
2022-12-01 14:08:02 C 09 35 36.108 +34 15 52.67 V T05
2022-12-01 14:10:45 C 09 35 36.353 +34 15 53.68 V T05
2022-12-01 14:15:19 C 09 35 36.775 +34 15 55.40 V T05
2022-12-01 14:39:52 C 09 35 39.050 +34 16 04.66 V T05
2022-12-02 12:22:21 C 09 37 44.504 +34 24 14.54 V 703
2022-12-02 12:30:28 C 09 37 45.278 +34 24 17.57 V 703
2022-12-02 12:38:43 C 09 37 46.045 +34 24 20.70 V 703
2022-12-02 12:46:53 C 09 37 46.826 +34 24 23.94 V 703
2022-12-02 14:45:59 C 09 37 58.622 +34 25 11.64 V T05
2022-12-02 15:04:22 C 09 38 00.355 +34 25 18.88 V T05
2022-12-02 15:20:56 C 09 38 01.922 +34 25 25.21 V T05
2022-12-02 15:30:41 C 09 38 02.849 +34 25 28.96 V T05
2022-12-02 15:51:03 C 09 38 04.771 +34 25 36.84 V T05