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
2019-01-12 08:19:51 C 03 22 17.72 +28 14 53.7 V T05
2019-01-12 08:33:20 C 03 22 17.38 +28 14 51.1 V T05
2019-01-23 07:10:40 C 03 17 39.533 +27 36 37.29 U F51
2019-01-23 07:28:48 C 03 17 39.307 +27 36 34.88 U F51
2019-01-23 07:46:51 C 03 17 39.086 +27 36 32.53 U F51
2019-01-23 08:04:53 C 03 17 38.859 +27 36 30.14 U F51
2019-02-03 06:45:29 C 03 16 05.26 +27 08 14.4 V T08
2019-02-03 06:49:54 C 03 16 05.39 +27 08 12.6 V T08
2019-02-03 06:56:19 C 03 16 05.40 +27 08 11.4 V T08
2019-02-03 07:00:35 C 03 16 05.37 +27 08 12.4 V T08
2019-02-03 07:22:10 C 03 16 05.42 +27 08 10.6 V T08
2019-02-05 07:20:50 C 03 16 07.13 +27 04 11.5 V T05
2019-02-05 07:33:45 C 03 16 07.22 +27 04 10.1 V T05
2019-02-05 07:46:08 C 03 16 07.25 +27 04 09.2 V T05
2019-02-05 07:59:00 C 03 16 07.21 +27 04 08.0 V T05
2019-09-07 11:47:07 C 08 07 17.29 +28 41 45.1 U I41
2019-09-07 12:13:52 C 08 07 19.95 +28 41 40.0 U I41
2019-09-10 11:46:05 C 08 14 36.30 +28 26 22.2 U I41
2019-09-10 12:17:11 C 08 14 39.49 +28 26 15.5 U I41
2019-09-22 11:54:44 C 08 45 42.84 +27 08 35.3 U I41
2019-09-22 12:38:26 C 08 45 47.79 +27 08 21.4 U I41
2019-09-23 12:22:44 C 08 48 30.54 +27 00 35.9 U I41
2019-09-23 12:29:56 C 08 48 31.36 +27 00 33.5 U I41
2019-09-23 12:37:09 C 08 48 32.18 +27 00 31.2 U I41
2019-09-29 14:31:17 C 09 05 47.502 +26 07 23.99 U F51
2019-09-29 14:38:40 C 09 05 48.394 +26 07 21.09 U F51
2019-09-29 14:46:02 C 09 05 49.292 +26 07 18.23 U F51
2019-09-29 14:53:24 C 09 05 50.185 +26 07 15.33 U F51
2019-10-04 11:38:43 C 09 20 26.99 +25 17 01.4 U I41
2019-10-04 11:44:43 C 09 20 27.75 +25 16 58.7 U I41
2019-10-04 12:15:34 C 09 20 31.70 +25 16 44.6 U I41
2019-10-04 12:21:35 C 09 20 32.48 +25 16 41.9 U I41
2019-10-09 14:24:55 C 09 36 42.58 +24 15 24.2 V T08
2019-10-09 14:29:35 C 09 36 43.21 +24 15 21.8 V T08
2019-10-09 14:37:37 C 09 36 44.30 +24 15 17.7 V T08
2019-10-09 14:52:56 C 09 36 46.39 +24 15 09.3 V T08
2019-10-17 14:16:54 C 10 04 18.64 +22 16 27.6 V T08
2019-10-17 14:21:33 C 10 04 19.35 +22 16 24.2 V T08
2019-10-17 14:29:33 C 10 04 20.58 +22 16 18.7 V T08
2019-10-17 14:44:52 C 10 04 22.88 +22 16 08.0 V T08
2019-10-22 11:26:34 C 10 22 43.58 +20 46 51.3 V 703
2019-10-22 11:34:39 C 10 22 44.89 +20 46 43.6 V 703
2019-10-22 11:50:49 C 10 22 47.51 +20 46 31.2 V 703
2019-10-25 11:45:48 C 10 34 46.62 +19 43 46.6 V 703
2019-10-25 11:55:54 C 10 34 48.34 +19 43 37.3 V 703
2019-10-25 12:02:30 C 10 34 49.46 +19 43 31.2 V 703
2019-10-25 12:09:06 C 10 34 50.56 +19 43 25.2 V 703
2019-10-25 14:50:56 C 10 35 18.25 +19 40 57.6 V T08
2019-10-25 14:55:36 C 10 35 19.04 +19 40 53.3 V T08
2019-10-25 15:10:06 C 10 35 21.51 +19 40 40.1 V T08