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
2005-12-31 06:36:46 C 03 07 21.50 +26 07 08.6 r 703
2005-12-31 06:46:35 C 03 07 21.14 +26 07 07.0 r 703
2005-12-31 06:56:21 C 03 07 20.92 +26 07 06.3 r 703
2005-12-31 07:06:05 C 03 07 20.67 +26 07 04.8 r 703
2006-01-06 03:33:12 C 03 03 57.59 +25 46 03.2 19.4 c 704
2006-01-06 04:10:56 C 03 03 56.68 +25 45 56.5 19.8 c 704
2006-01-06 04:29:38 C 03 03 56.29 +25 45 54.8 19.6 c 704
2006-10-02 10:07:10 C 07 14 52.99 +32 20 52.5 18.2 c 704
2006-10-02 10:26:16 C 07 14 53.89 +32 20 55.1 18.3 c 704
2006-10-02 10:49:49 C 07 14 54.82 +32 20 58.7 19.0 c 704
2006-10-02 11:27:36 C 07 14 56.69 +32 21 01.8 18.5 c 704
2006-10-27 09:34:18 C 07 38 46.32 +33 53 23.8 r 703
2006-10-27 09:43:48 C 07 38 46.64 +33 53 26.0 r 703
2006-10-27 09:53:15 C 07 38 46.89 +33 53 28.1 r 703
2006-10-27 10:02:43 C 07 38 47.25 +33 53 30.5 r 703
2006-11-14 09:03:55 C 07 48 48.50 +35 58 42.5 17.3 c 704
2006-11-14 09:23:17 C 07 48 48.76 +35 58 50.2 17.3 c 704
2006-11-14 09:43:15 C 07 48 49.08 +35 58 56.6 17.5 c 704
2006-11-17 11:41:36 C 07 49 34.19 +36 28 02.5 o 644
2006-11-17 11:56:09 C 07 49 34.30 +36 28 08.5 o 644
2006-11-17 12:12:14 C 07 49 34.37 +36 28 15.1 o 644
2006-11-20 08:16:16 C 07 49 56.71 +36 57 24.1 r 703
2006-11-20 08:25:03 C 07 49 56.74 +36 57 28.1 r 703
2006-11-20 08:42:34 C 07 49 56.71 +36 57 36.2 r 703
2006-11-21 04:35:29 C 07 49 58.93 +37 06 32.2 o 493
2006-11-21 05:20:13 C 07 49 58.80 +37 06 54.9 o 493
2006-11-22 23:24:05 C 07 49 58.50 +37 26 37.3 o 493
2006-11-22 23:49:06 C 07 49 58.44 +37 26 49.5 o 493
2006-11-23 00:20:47 C 07 49 58.33 +37 27 04.6 o 493
2006-11-23 23:33:12 C 07 49 53.99 +37 38 23.9 o 493
2006-11-23 23:49:11 C 07 49 54.06 +37 38 32.6 o 493
2006-11-24 00:04:01 C 07 49 53.95 +37 38 38.7 o 493
2006-12-02 07:53:18 C 07 47 09.43 +39 29 05.1 16.4 c 704
2006-12-02 08:11:36 C 07 47 08.94 +39 29 16.5 16.5 c 704
2006-12-02 08:29:50 C 07 47 08.48 +39 29 27.8 16.4 c 704
2006-12-02 08:48:48 C 07 47 07.96 +39 29 40.0 16.6 c 704
2006-12-02 09:07:08 C 07 47 07.47 +39 29 51.1 16.6 c 704
2006-12-08 21:37:30 C 07 41 43.62 +41 13 35.8 r 084
2006-12-08 21:41:41 C 07 41 43.42 +41 13 38.9 r 084
2006-12-10 20:53:00 C 07 39 24.27 +41 47 56.0 c 127
2006-12-10 20:59:59 C 07 39 23.87 +41 48 01.3 c 127
2006-12-10 21:04:51 C 07 39 23.63 +41 48 04.6 c 127
2006-12-10 21:10:04 C 07 39 23.35 +41 48 08.8 c 127
2006-12-10 21:15:29 C 07 39 23.06 +41 48 12.8 c 127
2006-12-11 07:19:10 C 07 38 50.43 +41 55 46.6 16.0 c 704
2006-12-11 07:36:18 C 07 38 49.45 +41 55 59.6 16.1 c 704
2006-12-11 07:53:25 C 07 38 48.46 +41 56 12.3 16.0 c 704
2006-12-11 08:10:33 C 07 38 47.47 +41 56 25.2 16.0 c 704
2006-12-11 08:28:05 C 07 38 46.46 +41 56 38.4 16.2 c 704
2006-12-12 21:37:15 C 07 36 36.97 +42 24 46.2 c A24