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
2026-03-04 06:24:55 C 03 44 21.384 +33 36 51.80 V T05
2026-03-04 06:41:38 C 03 44 21.425 +33 36 46.48 V T05
2026-03-04 06:46:12 C 03 44 21.434 +33 36 44.78 V T05
2026-03-04 06:54:08 C 03 44 21.485 +33 36 42.30 V T05
2026-03-04 18:38:24 C 03 44 25.478 +33 33 03.38 Z C23
2026-03-04 20:09:06 C 03 44 25.934 +33 32 34.80 Z C23
2026-03-05 06:28:47 C 03 44 29.630 +33 29 30.41 V T05
2026-03-05 06:37:26 C 03 44 29.664 +33 29 27.53 V T05
2026-03-05 06:42:09 C 03 44 29.683 +33 29 26.09 V T05
2026-03-05 06:56:39 C 03 44 29.765 +33 29 21.59 V T05
2026-03-06 06:28:25 C 03 44 40.222 +33 22 18.41 V T05
2026-03-06 06:32:59 C 03 44 40.258 +33 22 16.97 V T05
2026-03-06 06:41:44 C 03 44 40.313 +33 22 14.27 V T05
2026-03-06 06:56:48 C 03 44 40.411 +33 22 09.52 V T05
2026-03-06 18:22:47 B 03 44 46.570 +33 18 43.92 X K87
2026-03-06 18:33:16 B 03 44 46.646 +33 18 40.61 X K87
2026-03-06 18:43:46 B 03 44 46.726 +33 18 37.44 X K87
2026-03-08 20:33:33 C 03 45 18.254 +33 04 10.20 Z C23
2026-03-08 21:05:18 C 03 45 18.607 +33 04 01.16 Z C23
2026-03-09 06:03:08 C 03 45 25.241 +33 01 33.71 V T08
2026-03-09 06:11:43 C 03 45 25.334 +33 01 31.22 V T08
2026-03-09 06:21:42 C 03 45 25.442 +33 01 28.16 V T08
2026-03-09 06:35:37 C 03 45 25.598 +33 01 24.10 V T08
2026-03-10 07:26:36 C 03 45 45.583 +32 54 25.38 V T05
2026-03-10 07:30:42 C 03 45 45.674 +32 54 24.12 V T05
2026-03-10 07:39:19 C 03 45 45.739 +32 54 20.20 V T05
2026-03-10 07:43:18 C 03 45 45.859 +32 54 20.09 V T05
2026-03-10 07:48:35 C 03 45 45.907 +32 54 18.65 V T05
2026-03-10 07:56:38 C 03 45 46.037 +32 54 16.31 V T05
2026-03-10 08:13:03 C 03 45 46.253 +32 54 11.45 V T05
2026-03-14 19:32:22 C 03 47 37.104 +32 25 13.30 Z C23
2026-03-14 20:32:47 C 03 47 38.227 +32 24 57.24 Z C23
2026-03-17 19:59:08 B 03 49 10.682 +32 06 28.73 V R61
2026-03-17 20:05:21 B 03 49 10.819 +32 06 27.04 V R61
2026-03-17 20:11:06 B 03 49 10.944 +32 06 25.52 V R61
2026-03-17 20:46:57 C 03 49 11.791 +32 06 14.33 Z C23
2026-03-17 20:57:56 C 03 49 12.029 +32 06 11.09 Z C23
2026-03-20 20:37:09 C 03 50 57.019 +31 47 56.65 Z C23
2026-03-20 21:15:14 C 03 50 57.998 +31 47 46.46 Z C23
2026-03-20 21:47:24 C 03 50 58.781 +31 47 37.93 Z C23
2026-03-22 20:49:50 C 03 52 13.049 +31 35 39.95 Z C23
2026-03-22 21:19:00 C 03 52 13.795 +31 35 32.03 Z C23
2026-03-27 05:24:57 C 03 55 06.943 +31 08 27.74 V T08
2026-03-27 05:29:34 C 03 55 07.070 +31 08 26.56 V T08
2026-03-27 05:38:08 C 03 55 07.291 +31 08 24.29 V T08
2026-03-27 05:52:37 C 03 55 07.682 +31 08 20.08 V T08
2026-03-28 06:20:06 C 03 55 49.111 +31 01 41.56 V T05
2026-03-28 06:24:46 C 03 55 49.236 +31 01 40.19 V T05
2026-03-28 06:32:20 C 03 55 49.445 +31 01 38.03 V T05
2026-03-28 06:49:08 C 03 55 49.894 +31 01 33.10 V T05