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
2010-08-03 01:26:19 C 03 45 42.63 +11 46 14.2 u 160
2010-08-03 01:26:59 C 03 45 42.61 +11 46 14.8 u 160
2010-08-09 02:45:02 C 03 41 14.65 +11 50 07.1 u 160
2010-08-09 02:46:08 C 03 41 14.66 +11 50 07.1 u 160
2010-08-09 02:47:21 C 03 41 14.55 +11 50 07.3 u 160
2010-08-16 15:30:25 S 03 34 04.171 +11 48 10.04 L C51
2010-08-16 18:40:56 S 03 33 55.43 +11 48 03.1 L C51
2010-08-16 21:51:27 S 03 33 46.64 +11 47 56.2 L C51
2010-08-16 23:26:48 S 03 33 42.23 +11 47 52.4 L C51
2010-08-17 01:01:58 S 03 33 37.80 +11 47 48.7 L C51
2010-08-17 02:37:19 S 03 33 33.367 +11 47 45.24 L C51
2010-08-17 04:12:30 S 03 33 28.94 +11 47 41.5 L C51
2010-08-17 05:47:39 S 03 33 24.48 +11 47 37.6 L C51
2010-08-17 08:58:11 S 03 33 15.53 +11 47 30.1 L C51
2010-08-17 12:08:41 S 03 33 06.56 +11 47 22.3 L C51
2010-08-21 03:52:51 C 03 28 40.03 +11 42 25.8 w J05
2010-08-21 03:55:35 C 03 28 39.89 +11 42 25.4 w J05
2010-08-21 03:58:23 C 03 28 39.73 +11 42 25.2 w J05
2010-08-23 01:28:49 C 03 26 06.86 +11 38 55.4 u 160
2010-08-23 01:31:30 C 03 26 06.70 +11 38 55.4 u 160
2010-08-23 01:34:09 C 03 26 06.56 +11 38 55.2 u 160
2010-08-27 16:31:45 C 03 19 09.19 +11 27 27.2 o 300
2010-08-27 16:33:03 C 03 19 09.07 +11 27 26.3 o 300
2010-08-27 16:34:20 C 03 19 08.93 +11 27 26.7 o 300
2010-08-27 16:35:38 C 03 19 08.84 +11 27 27.2 o 300
2010-08-29 01:08:50 C 03 16 54.00 +11 23 12.8 u 160
2010-08-29 01:11:50 C 03 16 53.79 +11 23 12.6 u 160
2010-08-29 01:14:54 C 03 16 53.57 +11 23 12.0 u 160
2010-09-03 17:10:18 C 03 06 28.65 +11 01 14.8 u 379
2010-09-03 17:18:03 C 03 06 28.02 +11 01 13.3 u 379
2010-09-03 17:20:44 C 03 06 27.80 +11 01 12.8 u 379
2010-09-03 17:34:47 C 03 06 26.58 +11 01 10.6 u 379
2010-09-06 09:56:08 C 03 00 55.95 +10 48 13.6 16.7 c 704
2010-09-06 10:12:49 C 03 00 54.44 +10 48 10.1 16.6 c 704
2010-09-06 10:29:28 C 03 00 52.91 +10 48 06.2 16.6 c 704
2010-09-06 10:46:33 C 03 00 51.40 +10 48 01.8 17.4 c 704
2010-09-06 11:03:12 C 03 00 49.85 +10 47 59.5 16.7 c 704
2010-09-09 01:34:33 C 02 55 08.01 +10 33 43.9 v 204
2010-09-09 01:56:39 C 02 55 05.89 +10 33 38.7 v 204
2010-09-09 02:37:03 C 02 55 02.03 +10 33 29.1 v 204
2010-09-11 20:06:37 C 02 48 43.54 +10 16 55.2 o B17
2010-09-11 20:18:32 C 02 48 42.35 +10 16 52.1 o B17
2010-09-11 20:30:22 C 02 48 41.17 +10 16 49.0 o B17
2010-09-11 20:42:34 C 02 48 39.95 +10 16 45.8 o B17
2010-09-11 20:54:32 C 02 48 38.76 +10 16 42.7 o B17
2010-09-11 21:06:32 C 02 48 37.56 +10 16 39.5 o B17
2010-09-11 21:18:32 C 02 48 36.36 +10 16 36.4 o B17
2010-09-11 21:30:32 C 02 48 35.17 +10 16 33.3 o B17
2010-09-11 23:29:30 C 02 48 23.46 +10 16 02.0 w I99
2010-09-11 23:35:05 C 02 48 22.89 +10 16 00.7 w I99