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
2025-10-31 15:30:54 C 07 02 49.500 +34 42 46.94 V T05
2025-10-31 19:21:54 C 07 02 50.415 +34 43 44.50 W O18
2025-10-31 19:51:45 C 07 02 50.473 +34 43 52.44 W O18
2025-11-04 09:20:10 C 07 02 51.940 +35 06 39.85 V G96
2025-11-04 09:29:06 C 07 02 51.911 +35 06 42.30 V G96
2025-11-04 09:38:03 C 07 02 51.875 +35 06 44.86 V G96
2025-11-04 09:46:59 C 07 02 51.846 +35 06 47.41 V G96
2025-11-06 13:17:13 C 07 02 39.276 +35 21 21.78 V T05
2025-11-06 13:19:50 C 07 02 39.192 +35 21 22.07 V T05
2025-11-06 13:57:01 C 07 02 38.995 +35 21 33.34 V T05
2025-11-06 14:10:19 C 07 02 38.902 +35 21 37.04 V T05
2025-11-07 00:54:52 C 07 02 35.153 +35 24 42.01 V R17
2025-11-07 01:14:05 C 07 02 35.026 +35 24 47.84 V R17
2025-11-07 01:34:28 C 07 02 34.870 +35 24 53.89 V R17
2025-11-07 01:54:50 C 07 02 34.692 +35 25 00.19 V R17
2025-11-11 12:46:52 C 07 01 27.626 +35 57 31.21 V T05
2025-11-11 13:31:28 C 07 01 26.897 +35 57 45.50 V T05
2025-11-11 13:36:41 C 07 01 26.818 +35 57 47.38 V T05
2025-11-11 19:00:03 C 07 01 22.195 +35 59 28.05 W O18
2025-11-11 20:11:21 C 07 01 21.032 +35 59 51.07 W O18
2025-11-16 12:22:33 C 06 59 09.566 +36 37 01.52 V T05
2025-11-16 12:25:11 C 06 59 09.473 +36 37 02.46 V T05
2025-11-16 12:29:45 C 06 59 09.362 +36 37 04.19 V T05
2025-11-16 12:37:36 C 06 59 09.180 +36 37 06.82 V T05
2025-11-19 18:05:54 C 06 57 00.223 +37 04 19.18 W O18
2025-11-19 18:06:41 C 06 57 00.207 +37 04 19.39 W O18
2025-11-21 20:35:17 C 06 55 17.692 +37 22 41.78 X 327
2025-11-21 21:09:25 C 06 55 16.390 +37 22 54.33 X 327
2025-11-21 21:45:56 C 06 55 15.032 +37 23 07.55 X 327
2025-11-24 11:38:54 C 06 52 49.217 +37 46 16.03 V T05
2025-11-24 11:49:55 C 06 52 48.730 +37 46 20.42 V T05
2025-11-24 11:52:32 C 06 52 48.622 +37 46 21.36 V T05
2025-11-24 12:03:33 C 06 52 48.130 +37 46 25.75 V T05
2025-11-28 09:53:08 C 06 48 20.498 +38 22 22.37 V G96
2025-11-28 10:01:21 C 06 48 20.045 +38 22 25.46 V G96
2025-11-28 10:09:35 C 06 48 19.602 +38 22 28.67 V G96
2025-11-28 10:17:47 C 06 48 19.148 +38 22 31.80 V G96
2025-11-28 11:08:53 C 06 48 16.718 +38 22 52.50 V T05
2025-11-28 11:11:29 C 06 48 16.560 +38 22 53.65 V T05
2025-11-28 11:21:33 C 06 48 16.003 +38 22 57.76 V T08
2025-11-28 11:24:50 C 06 48 15.840 +38 22 58.98 V T08
2025-11-28 11:28:47 C 06 48 15.614 +38 23 00.53 V T08
2025-11-28 11:45:43 C 06 48 14.693 +38 23 07.08 V T05
2025-11-28 11:50:17 C 06 48 14.446 +38 23 08.77 V T05
2025-11-28 12:02:57 C 06 48 13.740 +38 23 13.81 V T08
2025-11-28 18:11:26 C 06 47 54.11 +38 25 35.6 V D29
2025-11-28 18:30:31 C 06 47 53.04 +38 25 42.9 V D29
2025-11-28 18:49:37 C 06 47 51.99 +38 25 50.3 V D29
2025-11-28 22:29:46 B 06 47 40.534 +38 27 14.04 Z R52
2025-11-28 22:37:50 B 06 47 40.111 +38 27 17.17 Z R52