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
2025-11-28 22:44:53 B 06 47 39.730 +38 27 20.09 Z R52
2025-11-29 03:31:23 B 06 47 23.849 +38 29 13.52 X J51
2025-11-29 03:41:46 B 06 47 23.258 +38 29 17.56 X J51
2025-11-29 03:52:03 B 06 47 22.697 +38 29 21.66 X J51
2025-11-29 10:19:19 C 06 47 01.717 +38 31 52.20 X F52
2025-11-29 10:35:05 C 06 47 00.817 +38 31 58.51 X F52
2025-11-29 11:06:30 C 06 46 59.020 +38 32 10.94 X F52
2025-11-29 11:49:12 C 06 46 56.568 +38 32 27.85 V T08
2025-11-29 11:52:30 C 06 46 56.383 +38 32 29.18 V T08
2025-11-29 11:57:45 C 06 46 56.076 +38 32 31.31 V T08
2025-11-29 12:05:01 C 06 46 55.666 +38 32 34.04 V T08
2025-11-29 22:51:53 C 06 46 19.572 +38 36 43.13 X M26
2025-11-29 22:57:40 C 06 46 19.210 +38 36 45.29 X M26
2025-11-29 23:02:48 C 06 46 18.898 +38 36 47.34 X M26
2025-11-30 00:52:49 C 06 46 12.703 +38 37 31.58 V R17
2025-11-30 01:13:10 C 06 46 11.520 +38 37 39.68 V R17
2025-11-30 01:33:33 C 06 46 10.330 +38 37 47.78 V R17
2025-11-30 01:53:55 C 06 46 09.127 +38 37 55.85 V R17
2025-11-30 10:55:19 C 06 45 38.023 +38 41 27.53 V T05
2025-11-30 10:59:13 C 06 45 37.795 +38 41 29.11 V T05
2025-11-30 11:03:09 C 06 45 37.548 +38 41 30.77 V T05
2025-11-30 11:31:40 C 06 45 35.830 +38 41 41.86 V T05
2025-11-30 17:11:06 C 06 45 16.148 +38 43 51.90 W O18
2025-11-30 18:27:21 C 06 45 11.532 +38 44 22.15 W O18
2025-11-30 22:27:18 B 06 44 57.494 +38 45 54.36 V R72
2025-11-30 22:32:19 B 06 44 57.204 +38 45 55.76 V R72
2025-11-30 22:38:02 B 06 44 56.818 +38 45 58.61 V R72
2025-12-01 10:16:05 C 06 44 14.926 +38 50 33.83 V T05
2025-12-01 10:19:31 C 06 44 14.714 +38 50 35.16 V T05
2025-12-01 10:24:06 C 06 44 14.422 +38 50 37.00 V T05
2025-12-01 10:48:14 C 06 44 12.922 +38 50 46.46 V T05
2025-12-02 10:59:25 C 06 42 42.698 +39 00 12.89 V T08
2025-12-02 11:02:43 C 06 42 42.480 +39 00 14.18 V T08
2025-12-02 11:22:12 C 06 42 41.196 +39 00 22.03 V T08
2025-12-02 11:29:27 C 06 42 40.726 +39 00 24.70 V T08
2025-12-03 00:45:59 C 06 41 49.586 +39 05 33.90 V R17
2025-12-03 01:06:21 C 06 41 48.240 +39 05 42.11 V R17
2025-12-03 01:26:45 C 06 41 46.865 +39 05 49.96 V R17
2025-12-03 01:47:05 C 06 41 45.494 +39 05 58.09 V R17
2025-12-03 15:00:02 C 06 40 53.268 +39 11 04.95 X 327
2025-12-03 15:40:51 C 06 40 50.473 +39 11 21.11 X 327
2025-12-03 16:21:37 C 06 40 47.681 +39 11 37.01 X 327
2025-12-07 20:57:19 B 06 33 27.703 +39 50 14.96 V R72
2025-12-07 21:16:24 B 06 33 26.138 +39 50 22.09 V R72
2025-12-07 21:35:14 B 06 33 24.646 +39 50 29.62 V R72
2025-12-08 04:25:00 B 06 32 51.485 +39 53 06.40 X J51
2025-12-08 04:35:46 B 06 32 50.659 +39 53 10.07 X J51
2025-12-08 04:46:31 B 06 32 49.776 +39 53 13.99 X J51
2025-12-08 22:23:22 B 06 31 24.785 +39 59 48.41 Z R52
2025-12-08 22:29:28 B 06 31 24.266 +39 59 50.68 Z R52