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
2013-11-19 03:11:19 C 22 48 45.52 -11 43 38.7 u H21
2013-11-19 03:13:53 C 22 48 45.69 -11 43 36.7 u H21
2013-11-19 03:16:27 C 22 48 45.89 -11 43 34.4 u H21
2013-11-19 03:19:01 C 22 48 46.06 -11 43 32.4 u H21
2013-11-19 03:22:50 C 22 48 46.31 -11 43 28.9 u H21
2013-11-20 03:26:19 C 22 50 28.21 -11 25 11.9 u H21
2013-11-20 03:29:01 C 22 50 28.37 -11 25 10.2 u H21
2013-11-20 03:31:44 C 22 50 28.56 -11 25 07.6 u H21
2013-11-20 03:35:47 C 22 50 28.84 -11 25 05.0 u H21
2013-11-20 03:39:51 C 22 50 29.12 -11 25 01.7 u H21
2013-11-20 03:44:14 C 22 50 29.41 -11 24 58.1 u H21
2013-12-12 01:18:31 C 23 23 31.05 -05 53 49.9 u H21
2013-12-12 01:21:36 C 23 23 31.24 -05 53 48.1 u H21
2013-12-12 01:24:47 C 23 23 31.41 -05 53 46.5 u H21
2013-12-12 01:29:21 C 23 23 31.68 -05 53 43.7 u H21
2013-12-13 02:04:46 C 23 24 57.36 -05 40 26.9 u H21
2013-12-13 02:09:39 C 23 24 57.65 -05 40 24.2 u H21
2013-12-13 02:14:47 C 23 24 57.92 -05 40 21.5 u H21
2013-12-14 01:59:37 C 23 26 20.46 -05 27 39.0 q 703
2013-12-14 02:06:08 C 23 26 20.81 -05 27 35.2 q 703
2013-12-14 02:12:40 C 23 26 21.18 -05 27 32.0 q 703
2013-12-19 01:47:12 C 23 33 11.38 -04 25 22.6 u H21
2013-12-19 01:51:25 C 23 33 11.62 -04 25 20.2 u H21
2013-12-19 01:55:38 C 23 33 11.90 -04 25 18.0 u H21
2013-12-19 01:59:26 C 23 33 12.12 -04 25 15.9 u H21
2013-12-26 01:30:24 C 23 42 36.12 -03 02 21.6 q 703
2013-12-26 01:39:06 C 23 42 36.57 -03 02 17.2 q 703
2013-12-26 01:47:47 C 23 42 37.07 -03 02 13.2 q 703
2013-12-26 01:56:28 C 23 42 37.53 -03 02 09.0 q 703
2014-01-04 01:46:22 C 23 54 31.86 -01 20 56.5 q G96
2014-01-04 01:54:47 C 23 54 32.31 -01 20 52.7 q G96
2014-01-04 02:03:13 C 23 54 32.76 -01 20 48.9 q G96
2014-01-04 02:11:38 C 23 54 33.22 -01 20 45.1 q G96
2014-01-16 00:44:54 C 00 10 07.96 +00 46 14.6 u H21
2014-01-16 00:48:09 C 00 10 08.11 +00 46 15.7 u H21
2014-01-16 00:51:33 C 00 10 08.32 +00 46 16.9 u H21
2014-01-16 00:54:56 C 00 10 08.50 +00 46 18.3 u H21
2014-01-16 00:58:19 C 00 10 08.69 +00 46 19.8 u H21
2014-01-16 01:02:33 C 00 10 08.91 +00 46 21.4 u H21
2014-01-20 05:24:55 C 00 15 33.471 +01 29 13.40 L F51
2014-01-20 05:31:18 C 00 15 33.810 +01 29 16.10 L F51
2014-01-20 05:37:48 C 00 15 34.154 +01 29 18.85 L F51
2014-01-20 05:44:17 C 00 15 34.500 +01 29 21.61 L F51
2014-02-01 20:29:54 C 00 31 47.78 +03 34 23.5 c J04
2014-02-01 20:46:33 C 00 31 48.65 +03 34 30.3 c J04
2014-02-01 21:08:14 C 00 31 49.80 +03 34 39.0 c J04
2014-02-01 21:24:53 C 00 31 50.69 +03 34 45.7 c J04
2014-10-15 08:48:00 C 03 33 55.01 +24 43 10.6 q 703
2014-10-15 08:55:12 C 03 33 54.66 +24 43 09.7 q 703
2014-10-15 09:02:25 C 03 33 54.37 +24 43 09.3 q 703