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
2001-10-19 11:57:46 C 03 03 14.39 +21 32 36.6 V 644
2001-10-21 08:16:37 C 03 01 00.83 +21 26 32.6 18.8 c 704
2001-10-21 08:40:08 C 03 00 59.67 +21 26 29.4 18.3 c 704
2001-10-21 09:03:40 C 03 00 58.47 +21 26 26.0 18.5 c 704
2001-10-21 09:27:12 C 03 00 57.25 +21 26 22.7 18.7 c 704
2001-10-21 09:50:43 C 03 00 56.03 +21 26 19.5 18.9 c 704
2001-10-22 07:01:13 C 02 59 51.57 +21 23 15.7 18.9 c 704
2001-10-22 07:26:02 C 02 59 50.38 +21 23 12.6 18.7 c 704
2001-10-22 07:50:38 C 02 59 49.00 +21 23 10.3 19.1 c 704
2001-10-22 08:38:48 C 02 59 46.58 +21 23 01.6 19.2 c 704
2001-10-26 09:49:47 C 02 54 45.44 +21 08 03.0 18.2 c 644
2001-10-26 10:28:18 C 02 54 43.40 +21 07 56.7 18.3 c 644
2001-10-26 10:57:32 C 02 54 41.86 +21 07 52.0 18.3 c 644
2001-10-28 06:31:03 C 02 52 25.30 +21 00 39.6 18.6 c 704
2001-10-28 06:54:27 C 02 52 24.05 +21 00 35.5 18.7 c 704
2001-10-28 07:17:52 C 02 52 22.87 +21 00 31.3 18.5 c 704
2001-11-12 06:54:37 C 02 33 43.95 +19 52 35.9 18.3 c 704
2001-11-12 07:15:15 C 02 33 42.87 +19 52 33.2 18.8 c 704
2001-11-12 07:35:42 C 02 33 41.85 +19 52 28.5 18.7 c 704
2001-11-12 07:56:09 C 02 33 40.77 +19 52 24.3 18.5 c 704
2001-11-12 08:16:39 C 02 33 39.79 +19 52 20.9 18.5 c 704
2001-11-17 08:12:08 C 02 27 50.65 +19 27 52.8 18.5 c 644
2001-11-17 08:42:55 C 02 27 49.18 +19 27 46.2 18.4 c 644
2001-11-17 09:13:04 C 02 27 47.75 +19 27 40.3 18.8 c 644
2001-11-19 05:11:50 C 02 25 45.17 +19 18 41.8 18.6 c 704
2001-11-19 05:33:19 C 02 25 44.16 +19 18 36.6 20.2 c 704
2001-11-19 05:54:29 C 02 25 43.16 +19 18 33.1 18.6 c 704
2001-11-19 06:15:55 C 02 25 42.17 +19 18 28.7 18.7 c 704
2001-11-19 06:37:05 C 02 25 41.20 +19 18 24.3 18.4 c 704
2001-11-24 03:35:39 C 02 20 31.96 +18 54 52.4 18.9 c 704
2001-11-24 03:56:37 C 02 20 30.96 +18 54 46.8 19.1 c 704
2001-11-24 04:17:35 C 02 20 30.07 +18 54 42.7 19.2 c 704
2001-11-24 04:38:33 C 02 20 29.17 +18 54 37.9 19.2 c 704
2001-11-24 04:59:32 C 02 20 28.25 +18 54 34.1 19.3 c 704
2001-12-11 03:35:03 C 02 06 20.52 +17 42 20.7 19.4 c 704
2001-12-11 03:56:53 C 02 06 19.93 +17 42 17.4 19.6 c 704
2001-12-11 04:19:15 C 02 06 19.23 +17 42 13.1 19.6 c 704
2001-12-11 04:42:40 C 02 06 18.63 +17 42 09.4 19.8 c 704
2001-12-11 05:04:31 C 02 06 18.02 +17 42 06.7 19.7 c 704
2001-12-15 01:52:15 C 02 03 59.85 +17 28 50.9 19.1 c 704
2001-12-15 02:14:01 C 02 03 59.32 +17 28 48.3 19.2 c 704
2001-12-15 02:35:45 C 02 03 58.82 +17 28 44.8 19.3 c 704
2001-12-15 02:57:31 C 02 03 58.27 +17 28 42.5 19.4 c 704
2001-12-15 03:19:17 C 02 03 57.76 +17 28 39.2 19.4 c 704
2001-12-18 01:43:42 C 02 02 27.32 +17 19 35.7 18.6 c 704
2001-12-18 02:05:28 C 02 02 26.87 +17 19 33.4 19.0 c 704
2001-12-18 02:27:12 C 02 02 26.43 +17 19 30.4 19.3 c 704
2001-12-18 02:48:58 C 02 02 25.99 +17 19 27.6 19.5 c 704
2001-12-18 03:11:00 C 02 02 25.48 +17 19 25.3 19.2 c 704
2001-12-19 01:34:45 C 02 01 59.42 +17 16 44.1 18.9 c 704