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
2023-11-11 06:34:47 C 01 57 48.485 +15 13 23.98 X F52
2023-11-11 06:52:28 C 01 57 47.549 +15 13 19.74 X F52
2023-11-11 07:10:11 C 01 57 46.597 +15 13 15.52 X F52
2023-11-11 07:27:59 C 01 57 45.660 +15 13 11.26 X F52
2023-11-11 09:35:59 C 01 57 38.832 +15 12 40.61 V T05
2023-11-11 09:58:33 C 01 57 37.622 +15 12 34.63 V T05
2023-11-11 10:04:02 C 01 57 37.322 +15 12 33.55 V T05
2023-11-11 10:15:42 C 01 57 36.662 +15 12 31.46 V T05
2023-11-12 03:37:49 C 01 56 42.710 +15 08 24.47 V W68
2023-11-12 03:42:22 C 01 56 42.451 +15 08 23.39 V W68
2023-11-12 04:29:23 C 01 56 40.013 +15 08 11.54 V W68
2023-11-12 04:46:28 C 01 56 39.101 +15 08 08.23 V W68
2023-11-13 02:27:03 C 01 55 32.832 +15 02 58.63 V W68
2023-11-13 02:36:11 C 01 55 32.354 +15 02 56.83 V W68
2023-11-13 02:44:01 C 01 55 31.932 +15 02 55.14 V W68
2023-11-15 09:00:19 C 01 52 50.748 +14 50 11.83 V T05
2023-11-15 09:04:52 C 01 52 50.491 +14 50 10.64 V T05
2023-11-15 09:13:42 C 01 52 50.090 +14 50 08.48 V T05
2023-11-15 09:30:25 C 01 52 49.274 +14 50 04.92 V T05
2023-11-16 02:47:28 C 01 51 59.630 +14 46 10.88 V W68
2023-11-16 02:58:22 C 01 51 59.100 +14 46 08.40 V W68
2023-11-16 03:02:57 C 01 51 58.850 +14 46 07.21 V W68
2023-11-16 03:19:09 C 01 51 58.099 +14 46 03.72 V W68
2023-11-17 09:00:31 C 01 50 34.538 +14 39 18.36 V T05
2023-11-17 09:04:38 C 01 50 34.337 +14 39 17.46 V T05
2023-11-17 09:12:27 C 01 50 33.967 +14 39 15.41 V T05
2023-11-17 09:28:24 C 01 50 33.216 +14 39 12.31 V T05
2023-11-18 05:04:16 C 01 49 39.659 +14 34 50.94 X F51
2023-11-18 05:20:00 C 01 49 38.936 +14 34 47.51 X F51
2023-11-18 05:40:45 C 01 49 37.983 +14 34 43.01 X F51
2023-11-18 05:56:28 C 01 49 37.257 +14 34 39.58 X F51
2023-12-04 05:13:01 C 01 35 45.424 +13 23 52.91 V G96
2023-12-04 05:21:11 C 01 35 45.204 +13 23 51.68 V G96
2023-12-04 05:29:20 C 01 35 44.970 +13 23 50.53 V G96
2023-12-04 05:37:29 C 01 35 44.754 +13 23 49.31 V G96
2023-12-05 07:46:46 C 01 35 03.631 +13 20 08.05 V T05
2023-12-05 07:52:22 C 01 35 03.482 +13 20 07.48 V T05
2023-12-05 07:59:44 C 01 35 03.300 +13 20 06.61 V T05
2023-12-05 08:15:42 C 01 35 02.846 +13 20 04.42 V T05
2023-12-07 07:42:05 C 01 33 53.443 +13 13 46.24 V T05
2023-12-07 07:47:17 C 01 33 53.321 +13 13 44.69 V T05
2023-12-07 08:23:10 C 01 33 52.435 +13 13 40.22 V T05
2023-12-07 08:33:56 C 01 33 52.152 +13 13 38.93 V T05
2023-12-08 18:58:36 C 01 33 06.079 +13 09 28.98 V M22
2023-12-08 19:03:13 C 01 33 05.897 +13 09 28.22 V M22
2023-12-08 19:13:44 C 01 33 05.662 +13 09 26.28 V M22
2023-12-08 19:30:17 C 01 33 05.273 +13 09 24.77 V M22
2023-12-10 07:38:01 C 01 32 20.357 +13 05 12.23 V T05
2023-12-10 07:42:13 C 01 32 20.280 +13 05 11.76 V T05
2023-12-10 07:51:21 C 01 32 20.114 +13 05 11.47 V T05