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
2019-10-25 15:18:54 C 10 35 23.01 +19 40 31.9 V T08
2019-10-27 14:33:28 C 10 43 34.92 +18 55 28.9 V T05
2019-10-27 14:48:43 C 10 43 37.59 +18 55 14.0 V T05
2019-10-27 15:07:19 C 10 43 40.86 +18 54 55.8 V T05
2019-10-31 12:00:15 C 11 00 34.17 +17 16 59.8 V 703
2019-10-31 12:07:57 C 11 00 35.59 +17 16 51.3 V 703
2019-10-31 12:15:39 C 11 00 37.03 +17 16 42.7 V 703
2019-10-31 12:23:20 C 11 00 38.47 +17 16 34.1 V 703
2019-11-04 13:57:22 C 11 19 34.46 +15 18 53.1 V T05
2019-11-04 14:01:27 C 11 19 35.28 +15 18 47.7 V T05
2019-11-04 14:09:28 C 11 19 36.87 +15 18 37.4 V T05
2019-11-04 14:24:06 C 11 19 39.79 +15 18 18.7 V T05
2019-11-10 14:37:43 C 11 50 07.62 +11 52 27.0 V T08
2019-11-10 14:42:57 C 11 50 08.77 +11 52 18.8 V T08
2019-11-10 14:52:27 C 11 50 10.88 +11 52 04.1 V T08
2019-11-10 15:09:06 C 11 50 14.55 +11 51 38.1 V T08
2019-11-10 15:40:05 C 11 50 21.42 +11 50 49.5 V T08
2019-11-12 14:25:03 C 12 00 55.42 +10 35 05.4 V T05
2019-11-12 14:29:18 C 12 00 56.37 +10 34 58.4 V T05
2019-11-12 14:36:48 C 12 00 58.11 +10 34 46.0 V T05
2019-11-12 14:53:43 C 12 01 01.97 +10 34 17.9 V T05
2019-11-12 15:38:12 C 12 01 12.14 +10 33 04.0 V T05
2019-11-25 15:20:06 C 13 21 02.23 +00 12 43.5 V T08
2019-11-25 15:24:55 C 13 21 03.60 +00 12 32.5 V T08
2019-11-25 15:35:12 C 13 21 06.48 +00 12 09.3 V T08
2019-11-25 15:42:54 C 13 21 08.66 +00 11 51.5 V T08
2020-07-09 14:02:45 C 03 11 29.97 +18 39 19.3 V T05
2020-07-09 14:08:42 C 03 11 30.23 +18 39 19.8 V T05
2020-07-09 14:34:14 C 03 11 31.13 +18 39 24.8 V T05
2020-07-09 14:50:49 C 03 11 31.69 +18 39 28.4 V T05
2020-07-25 14:22:56 C 03 23 11.171 +19 47 10.17 U F51
2020-07-25 14:30:44 C 03 23 11.363 +19 47 11.42 U F51
2020-07-25 14:38:31 C 03 23 11.556 +19 47 12.65 U F51
2020-07-25 14:46:19 C 03 23 11.750 +19 47 13.90 U F51
2020-08-10 13:51:08 C 03 30 35.18 +20 39 22.1 V T05
2020-08-10 13:55:52 C 03 30 35.26 +20 39 22.9 V T05
2020-08-10 14:04:31 C 03 30 35.37 +20 39 24.0 V T05
2020-08-10 14:29:42 C 03 30 35.66 +20 39 27.1 V T05
2020-08-16 14:32:51 C 03 32 04.48 +20 54 59.7 V T08
2020-08-16 14:42:58 C 03 32 04.53 +20 55 01.0 V T08
2020-08-16 14:46:30 C 03 32 04.56 +20 55 01.1 V T08
2020-08-16 14:57:54 C 03 32 04.62 +20 55 02.1 V T08
2020-08-22 13:19:13 C 03 32 45.08 +21 08 03.7 V T05
2020-08-22 13:26:37 C 03 32 45.01 +21 08 03.7 V T05
2020-08-22 13:31:53 C 03 32 45.00 +21 08 03.8 V T05
2020-08-22 13:47:48 C 03 32 45.08 +21 08 04.7 V T05
2020-08-24 13:30:48 C 03 32 47.42 +21 11 54.2 V T08
2020-08-24 13:38:08 C 03 32 47.40 +21 11 54.6 V T08
2020-08-24 13:42:46 C 03 32 47.32 +21 11 55.3 V T08
2020-08-24 13:59:25 C 03 32 47.37 +21 11 56.8 V T08