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
2026-02-03 07:19:54 C 04 03 07.730 +38 11 55.61 V T08
2026-02-03 07:25:17 C 04 03 07.361 +38 11 53.09 V T08
2026-02-03 07:33:52 C 04 03 06.780 +38 11 48.98 V T08
2026-02-03 07:59:39 C 04 03 05.030 +38 11 36.85 V T08
2026-02-04 08:22:31 C 04 01 31.351 +38 00 26.68 V T05
2026-02-04 08:27:55 C 04 01 31.008 +38 00 24.12 V T05
2026-02-04 08:35:24 C 04 01 30.521 +38 00 20.48 V T05
2026-02-04 08:49:30 C 04 01 29.614 +38 00 13.93 V T05
2026-02-04 19:57:54 B 04 00 48.847 +37 55 08.94 X J51
2026-02-04 20:09:06 B 04 00 48.151 +37 55 03.76 X J51
2026-02-04 20:17:45 C 04 00 47.35 +37 54 56.8 X L04
2026-02-04 20:20:34 B 04 00 47.424 +37 54 58.39 X J51
2026-02-04 20:20:38 C 04 00 47.14 +37 54 55.4 X L04
2026-02-04 20:24:40 C 04 00 46.87 +37 54 53.5 X L04
2026-02-04 22:59:33 C 04 00 37.392 +37 53 40.67 Z C23
2026-02-04 23:30:38 C 04 00 35.542 +37 53 25.44 Z C23
2026-02-05 00:35:02 B 04 00 31.66 +37 53 05.9 X X76
2026-02-05 00:38:06 B 04 00 31.46 +37 53 04.3 X X76
2026-02-05 00:40:33 B 04 00 31.32 +37 53 03.1 X X76
2026-02-06 02:23:52 B 03 59 00.774 +37 41 15.68 W V47
2026-02-06 02:32:51 B 03 59 00.243 +37 41 11.49 W V47
2026-02-06 02:41:50 B 03 58 59.707 +37 41 07.33 W V47
2026-02-06 03:03:19 B 03 58 58.408 +37 40 57.42 W V47
2026-02-06 03:12:18 B 03 58 57.878 +37 40 53.32 W V47
2026-02-07 01:42:26 B 03 57 42.776 +37 30 40.62 W V47
2026-02-07 01:46:55 B 03 57 42.529 +37 30 38.70 W V47
2026-02-07 01:51:25 B 03 57 42.267 +37 30 36.69 W V47
2026-02-07 01:55:54 B 03 57 42.012 +37 30 34.52 W V47
2026-02-07 02:00:24 B 03 57 41.749 +37 30 32.53 W V47
2026-02-07 20:25:00 C 03 56 42.768 +37 22 10.06 Z C23
2026-02-07 20:58:46 C 03 56 40.944 +37 21 54.76 Z C23
2026-02-07 22:55:05 C 03 56 34.822 +37 21 01.04 Z C23
2026-02-08 20:27:27 B 03 55 29.743 +37 11 25.84 X R20
2026-02-08 20:37:03 B 03 55 29.251 +37 11 21.41 X R20
2026-02-09 20:31:29 B 03 54 20.683 +37 00 41.94 X J51
2026-02-09 20:42:45 B 03 54 20.114 +37 00 36.97 X J51
2026-02-09 20:53:57 B 03 54 19.570 +37 00 31.93 X J51
2026-02-10 02:40:18 C 03 54 03.744 +36 57 58.14 V G96
2026-02-10 02:48:01 C 03 54 03.373 +36 57 54.68 V G96
2026-02-10 02:55:45 C 03 54 03.006 +36 57 51.30 V G96
2026-02-10 03:03:29 C 03 54 02.639 +36 57 47.74 V G96
2026-02-12 20:53:03 B 03 51 17.539 +36 29 03.59 X J51
2026-02-12 20:57:49 B 03 51 17.302 +36 29 01.75 X J51
2026-02-12 21:02:54 B 03 51 17.093 +36 28 58.76 X J51
2026-02-14 07:10:30 C 03 50 03.034 +36 14 26.59 V T05
2026-02-14 07:15:16 C 03 50 02.866 +36 14 24.47 V T05
2026-02-14 07:24:10 C 03 50 02.544 +36 14 20.83 V T05
2026-02-14 07:44:08 C 03 50 01.817 +36 14 12.16 V T05
2026-02-14 12:07:02 C 03 49 53.103 +36 12 20.36 V D29
2026-02-14 12:27:24 C 03 49 52.376 +36 12 11.62 V D29