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
2004-10-21 06:27:25 C 02 37 27.70 +18 28 37.3 18.2 c 704
2004-10-21 06:44:26 C 02 37 26.70 +18 28 34.4 18.0 c 704
2004-10-21 07:01:22 C 02 37 25.68 +18 28 31.0 18.3 c 704
2004-10-21 07:18:17 C 02 37 24.68 +18 28 27.5 18.3 c 704
2004-10-21 07:35:15 C 02 37 23.69 +18 28 24.5 18.3 c 704
2004-10-23 01:34:07 C 02 34 57.43 +18 19 55.0 r 170
2004-10-23 01:40:46 C 02 34 57.04 +18 19 53.5 r 170
2004-10-23 01:47:26 C 02 34 56.65 +18 19 52.3 r 170
2004-11-04 07:25:39 C 02 18 07.12 +17 15 25.3 d 703
2004-11-04 07:37:25 C 02 18 06.46 +17 15 22.3 d 703
2004-11-04 07:49:02 C 02 18 05.81 +17 15 19.7 d 703
2004-11-04 08:00:36 C 02 18 05.20 +17 15 17.3 d 703
2004-11-07 04:44:32 C 02 14 20.16 +16 59 29.7 18.4 c 704
2004-11-07 05:01:54 C 02 14 19.22 +16 59 25.7 18.2 c 704
2004-11-07 05:53:34 C 02 14 16.38 +16 59 13.4 18.3 c 704
2004-11-10 12:04:44 C 02 10 08.97 +16 41 21.8 18.7 c 608
2004-11-10 12:20:08 C 02 10 08.18 +16 41 18.4 18.9 c 608
2004-11-10 12:35:22 C 02 10 07.38 +16 41 15.1 18.8 c 608
2004-11-12 06:12:18 C 02 08 00.38 +16 31 46.9 d 703
2004-11-12 06:21:47 C 02 07 59.91 +16 31 44.4 d 703
2004-11-12 06:31:10 C 02 07 59.41 +16 31 42.5 d 703
2004-11-12 06:40:32 C 02 07 58.94 +16 31 40.8 d 703
2004-11-19 04:35:24 C 02 00 08.10 +15 55 15.1 18.8 c 704
2004-11-19 04:53:00 C 02 00 07.31 +15 55 11.9 18.7 c 704
2004-11-19 05:10:36 C 02 00 06.42 +15 55 08.3 19.0 c 704
2004-11-19 05:28:18 C 02 00 05.67 +15 55 04.5 19.2 c 704
2004-11-19 05:45:56 C 02 00 04.90 +15 55 00.7 19.2 c 704
2004-12-02 02:29:07 C 01 48 28.79 +14 56 43.8 o 699
2004-12-02 02:57:08 C 01 48 27.96 +14 56 38.9 o 699
2004-12-02 03:25:11 C 01 48 26.96 +14 56 35.6 o 699
2004-12-02 03:45:25 C 01 48 26.35 +14 56 32.4 18.3 c 644
2004-12-02 03:53:12 C 01 48 26.06 +14 56 30.9 o 699
2004-12-02 04:15:37 C 01 48 25.41 +14 56 27.3 18.4 c 644
2004-12-02 04:49:40 C 01 48 24.33 +14 56 21.8 18.7 c 644
2004-12-09 03:17:12 C 01 43 55.28 +14 32 06.3 18.9 c 704
2004-12-09 03:36:29 C 01 43 54.81 +14 32 03.1 19.2 c 704
2004-12-09 03:54:26 C 01 43 54.37 +14 32 01.3 19.5 c 704
2004-12-09 04:22:30 C 01 43 53.75 +14 31 57.7 19.4 c 704
2004-12-09 04:40:28 C 01 43 53.30 +14 31 55.6 19.3 c 704
2004-12-09 05:59:22 C 01 43 51.37 +14 31 44.9 d 703
2004-12-09 06:10:58 C 01 43 51.18 +14 31 43.8 d 703
2004-12-09 06:22:31 C 01 43 50.85 +14 31 41.4 d 703
2004-12-09 06:34:09 C 01 43 50.65 +14 31 40.4 d 703
2004-12-14 02:50:20 C 01 41 28.27 +14 18 13.4 d 703
2004-12-14 03:01:56 C 01 41 28.02 +14 18 11.6 d 703
2004-12-14 03:13:33 C 01 41 27.80 +14 18 10.5 d 703
2004-12-14 03:25:04 C 01 41 27.57 +14 18 09.4 d 703
2004-12-15 02:51:02 C 01 41 03.26 +14 15 48.7 19.2 c 704
2004-12-15 03:10:14 C 01 41 02.94 +14 15 46.9 19.6 c 704
2004-12-15 03:29:01 C 01 41 02.60 +14 15 44.1 19.7 c 704