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
2026-01-16 08:41:41 C 04 42 54.432 +41 09 58.64 V T05
2026-01-16 08:59:46 C 04 42 52.270 +41 09 52.81 V T05
2026-01-17 08:55:19 C 04 40 06.154 +41 02 06.32 V T05
2026-01-17 09:00:03 C 04 40 05.599 +41 02 04.60 V T05
2026-01-17 09:08:40 C 04 40 04.596 +41 02 01.79 V T05
2026-01-17 09:12:01 C 04 40 04.202 +41 02 00.60 V T05
2026-01-17 09:16:35 C 04 40 03.665 +41 01 59.05 V T05
2026-01-17 09:23:10 C 04 40 02.885 +41 01 56.75 V T05
2026-01-17 09:24:31 C 04 40 02.734 +41 01 56.24 V T05
2026-01-17 09:42:18 C 04 40 00.653 +41 01 50.12 V T05
2026-01-17 21:32:37 C 04 38 40.027 +40 57 46.87 Z C23
2026-01-17 22:26:27 C 04 38 33.842 +40 57 28.15 Z C23
2026-01-18 00:32:17 C 04 38 19.421 +40 56 43.91 Z C23
2026-01-18 08:21:29 C 04 37 26.779 +40 54 07.60 V T05
2026-01-18 08:26:07 C 04 37 26.242 +40 54 05.83 V T05
2026-01-18 08:36:41 C 04 37 25.025 +40 54 02.12 V T05
2026-01-18 08:51:25 C 04 37 23.333 +40 53 56.83 V T05
2026-01-18 17:19:02 C 04 36 27.247 +40 50 53.81 Z C23
2026-01-18 19:18:04 B 04 36 13.802 +40 50 12.41 V L65
2026-01-18 19:22:12 B 04 36 13.306 +40 50 10.93 V L65
2026-01-18 19:26:21 B 04 36 12.814 +40 50 09.31 V L65
2026-01-18 23:02:50 C 04 35 48.444 +40 48 51.95 Z C23
2026-01-19 08:10:43 C 04 34 48.185 +40 45 39.67 V T08
2026-01-19 08:15:19 C 04 34 47.647 +40 45 38.20 V T08
2026-01-19 08:24:36 C 04 34 46.598 +40 45 34.67 V T08
2026-01-19 08:39:49 C 04 34 44.899 +40 45 29.05 V T08
2026-01-19 17:19:43 B 04 33 48.660 +40 42 14.47 Z R92
2026-01-19 17:35:07 B 04 33 46.951 +40 42 08.53 Z R92
2026-01-19 17:48:40 B 04 33 45.478 +40 42 03.49 Z R92
2026-01-20 16:52:12 C 04 31 16.982 +40 33 26.28 X B67
2026-01-20 16:54:30 C 04 31 16.740 +40 33 25.56 X B67
2026-01-20 16:56:49 C 04 31 16.488 +40 33 24.73 X B67
2026-01-20 18:51:04 B 04 31 04.157 +40 32 41.21 V L65
2026-01-20 18:55:12 B 04 31 03.706 +40 32 39.59 V L65
2026-01-20 18:59:21 B 04 31 03.262 +40 32 37.90 V L65
2026-01-21 04:39:28 C 04 30 01.922 +40 28 58.01 V G96
2026-01-21 04:47:29 C 04 30 01.058 +40 28 54.95 V G96
2026-01-21 04:55:27 C 04 30 00.205 +40 28 51.85 V G96
2026-01-21 05:03:25 C 04 29 59.348 +40 28 48.72 V G96
2026-01-21 08:02:41 C 04 29 40.565 +40 27 41.11 V T08
2026-01-21 08:07:17 C 04 29 40.061 +40 27 39.35 V T08
2026-01-21 08:15:54 C 04 29 39.163 +40 27 35.86 V T08
2026-01-21 08:31:05 C 04 29 37.519 +40 27 29.84 V T08
2026-01-21 17:16:06 B 04 28 43.641 +40 24 01.34 V 160
2026-01-21 17:18:52 B 04 28 43.314 +40 24 00.34 V 160
2026-01-21 17:21:49 B 04 28 43.024 +40 23 58.87 V 160
2026-01-21 18:55:09 B 04 28 33.170 +40 23 21.73 V L65
2026-01-21 19:05:29 B 04 28 32.081 +40 23 17.66 V L65
2026-01-21 19:15:49 B 04 28 30.994 +40 23 13.63 V L65
2026-01-21 19:17:39 C 04 28 30.845 +40 23 13.24 Z C23