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
2010-02-15 18:11:52 S 03 51 52.53 +33 42 29.1 L C51
2010-02-15 21:22:23 S 03 51 51.38 +33 41 44.1 L C51
2010-02-16 00:32:54 S 03 51 50.28 +33 40 59.0 L C51
2010-02-16 00:33:05 S 03 51 50.28 +33 40 59.0 L C51
2010-02-16 02:08:15 S 03 51 49.77 +33 40 36.5 L C51
2010-02-16 03:43:36 S 03 51 49.25 +33 40 14.1 L C51
2010-02-16 05:18:46 S 03 51 48.75 +33 39 51.6 L C51
2010-02-16 06:54:07 S 03 51 48.27 +33 39 29.9 L C51
2010-02-16 08:29:17 S 03 51 47.78 +33 39 07.5 L C51
2010-02-16 08:29:28 S 03 51 47.80 +33 39 06.9 L C51
2010-02-16 11:39:59 S 03 51 46.87 +33 38 22.4 L C51
2010-02-16 14:50:30 S 03 51 45.98 +33 37 38.2 L C51
2010-02-16 18:01:02 S 03 51 45.15 +33 36 54.8 L C51
2010-02-16 19:01:46 C 03 51 44.60 +33 36 37.5 17.1 u C20
2010-02-16 19:03:53 C 03 51 44.59 +33 36 37.0 17.1 u C20
2010-02-16 19:23:32 C 03 51 44.66 +33 36 33.0 o B84
2010-02-16 19:28:43 C 03 51 44.62 +33 36 31.8 o B84
2010-02-16 19:33:54 C 03 51 44.59 +33 36 30.6 o B84
2010-02-16 20:24:20 C 03 51 44.36 +33 36 18.7 o B84
2010-02-16 20:29:30 C 03 51 44.29 +33 36 17.4 o B84
2010-02-16 20:34:41 C 03 51 44.31 +33 36 16.3 o B84
2010-02-16 21:46:22 C 03 51 43.88 +33 35 58.4 17.6 u C20
2010-02-18 20:38:33 C 03 51 38.11 +33 25 26.1 16.8 u C20
2010-02-18 20:40:43 C 03 51 38.11 +33 25 25.5 16.7 u C20
2010-02-23 20:36:36 C 03 52 08.54 +33 00 54.5 16.5 u C20
2010-02-23 20:38:43 C 03 52 08.56 +33 00 54.1 16.3 u C20
2010-02-24 19:49:25 C 03 52 21.65 +32 56 34.9 16.5 u C20
2010-02-24 19:51:32 C 03 52 21.66 +32 56 34.4 16.4 u C20
2010-02-25 19:50:05 C 03 52 37.58 +32 52 13.9 16.3 u C20
2010-02-25 19:52:11 C 03 52 37.59 +32 52 13.6 16.3 u C20
2010-02-26 20:19:54 C 03 52 56.27 +32 47 56.1 16.3 u C20
2010-02-26 20:22:01 C 03 52 56.29 +32 47 55.7 16.3 u C20
2010-02-28 20:08:52 C 03 53 39.79 +32 39 58.3 16.5 u C20
2010-02-28 20:10:59 C 03 53 39.82 +32 39 57.8 16.7 u C20
2010-03-01 20:10:37 C 03 54 05.09 +32 36 10.0 16.4 u C20
2010-03-01 20:12:44 C 03 54 05.11 +32 36 09.6 16.5 u C20
2010-03-04 20:19:17 C 03 55 34.50 +32 25 32.4 16.5 u C20
2010-03-04 20:21:24 C 03 55 34.54 +32 25 32.1 16.5 u C20
2010-03-05 01:48:45 C 03 55 42.21 +32 24 49.2 r H53
2010-03-05 01:53:45 C 03 55 42.32 +32 24 48.1 r H53
2010-03-05 01:59:02 C 03 55 42.46 +32 24 47.5 r H53
2010-03-05 02:06:02 C 03 55 42.58 +32 24 46.1 r H53
2010-03-05 02:11:03 C 03 55 42.66 +32 24 45.8 r H53
2010-03-05 02:18:03 C 03 55 42.86 +32 24 44.4 r H53
2010-03-05 19:05:16 C 03 56 06.82 +32 22 26.5 16.5 u C20
2010-03-06 02:31:52 C 03 56 17.87 +32 21 27.8 r H53
2010-03-06 02:37:32 C 03 56 18.05 +32 21 26.9 r H53
2010-03-06 02:44:58 C 03 56 18.19 +32 21 26.1 r H53
2010-03-06 02:51:59 C 03 56 18.35 +32 21 25.2 r H53
2010-03-06 02:58:59 C 03 56 18.55 +32 21 24.1 r H53