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
2025-10-01 13:57:33 C 06 48 46.435 +32 28 15.64 V T05
2025-10-01 14:02:51 C 06 48 46.548 +32 28 16.64 V T05
2025-10-01 14:16:35 C 06 48 47.045 +32 28 17.83 V T05
2025-10-03 11:04:24 C 06 50 11.346 +32 34 16.61 V G96
2025-10-03 11:11:57 C 06 50 11.580 +32 34 17.69 V G96
2025-10-03 11:19:31 C 06 50 11.807 +32 34 18.62 V G96
2025-10-03 11:27:04 C 06 50 12.034 +32 34 19.67 V G96
2025-10-04 14:06:34 C 06 51 00.696 +32 38 01.54 V T08
2025-10-04 14:08:32 C 06 51 00.756 +32 38 01.64 V T08
2025-10-04 14:21:59 C 06 51 01.193 +32 38 03.48 V T08
2025-10-04 14:30:24 C 06 51 01.387 +32 38 04.99 V T08
2025-10-05 13:46:56 C 06 51 42.905 +32 41 20.36 V T05
2025-10-05 13:51:33 C 06 51 43.070 +32 41 22.13 V T05
2025-10-05 14:27:36 C 06 51 44.057 +32 41 27.28 V T05
2025-10-05 14:32:11 C 06 51 44.162 +32 41 28.14 V T05
2025-10-16 13:59:10 C 06 58 21.655 +33 24 04.61 V T08
2025-10-16 14:03:18 C 06 58 21.706 +33 24 05.33 V T08
2025-10-16 14:10:50 C 06 58 21.852 +33 24 06.95 V T08
2025-10-16 14:46:06 C 06 58 22.529 +33 24 12.96 V T08
2025-10-19 13:35:31 C 06 59 43.476 +33 37 36.88 V T05
2025-10-19 13:38:07 C 06 59 43.536 +33 37 37.16 V T05
2025-10-19 13:42:51 C 06 59 43.625 +33 37 38.24 V T05
2025-10-19 13:50:41 C 06 59 43.714 +33 37 39.65 V T05
2025-10-20 02:38:41 C 06 59 57.101 +33 40 09.91 V R17
2025-10-20 02:59:04 C 06 59 57.418 +33 40 14.16 V R17
2025-10-20 03:19:25 C 06 59 57.763 +33 40 18.44 V R17
2025-10-20 03:39:47 C 06 59 58.092 +33 40 22.58 V R17
2025-10-21 02:39:08 C 07 00 20.837 +33 44 58.52 V R17
2025-10-21 02:58:47 C 07 00 21.132 +33 45 02.74 V R17
2025-10-21 03:19:09 C 07 00 21.430 +33 45 07.09 V R17
2025-10-21 03:39:32 C 07 00 21.746 +33 45 11.20 V R17
2025-10-21 10:30:32 C 07 00 28.177 +33 46 34.72 V V00
2025-10-21 10:38:37 C 07 00 28.296 +33 46 36.37 V V00
2025-10-21 10:46:40 C 07 00 28.415 +33 46 38.03 V V00
2025-10-21 10:54:43 C 07 00 28.530 +33 46 39.68 V V00
2025-10-24 09:45:20 C 07 01 27.962 +34 01 37.31 V G96
2025-10-24 09:52:49 C 07 01 28.045 +34 01 39.07 V G96
2025-10-24 10:00:18 C 07 01 28.124 +34 01 40.62 V G96
2025-10-24 10:07:47 C 07 01 28.214 +34 01 42.35 V G96
2025-10-25 11:35:40 C 07 01 45.930 +34 07 20.28 V G96
2025-10-25 11:43:09 C 07 01 46.013 +34 07 21.86 V G96
2025-10-25 11:50:39 C 07 01 46.088 +34 07 23.81 V G96
2025-10-25 11:58:09 C 07 01 46.153 +34 07 25.28 V G96
2025-10-30 13:14:21 C 07 02 43.618 +34 36 08.17 V T05
2025-10-30 13:17:36 C 07 02 43.620 +34 36 09.07 V T05
2025-10-30 13:22:10 C 07 02 43.615 +34 36 10.55 V T05
2025-10-30 13:32:56 C 07 02 43.673 +34 36 13.00 V T05
2025-10-31 14:53:36 C 07 02 49.404 +34 42 37.69 V T05
2025-10-31 15:09:30 C 07 02 49.442 +34 42 41.58 V T05
2025-10-31 15:19:34 C 07 02 49.457 +34 42 44.06 V T05