168378 (1997 ET30)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4495441615 ± 7.44e-09
Semi-major axis (a)2.1369590145 AU ± 4.33e-09
Inclination (i)6.81171260° ± 2.15e-06
Long. of Asc. Node (Ω)23.20967142° ± 6.26e-06
Arg. of Perihelion (ω)263.36106272° ± 7.07e-06
Mean Anomaly (M)352.56084806° ± 4.46e-06
Mean Motion (n)0.3155135296°/day ± 9.58e-10
Perihelion dist (q)1.17630157 AU ± 1.61e-08
Aphelion dist (Q)3.09761646 AU ± 1.71e-08
Orbital Period3.12387962 yr ± 9.49e-09
Physical Parameters
H (abs. magnitude)16.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.025″
Uncertainty0
Orbit TypeAmor
MOID0.203992 AU
Observations Used877
Gaia Obs Used30
Oppositions19
Arc Total1988-2016
First Observation Used1988-09-14
Last Observation Used2025-04-23
Observations (1241)
Date Type RA Dec Mag Band Observatory
2016-04-05 07:36:58 C 14 03 30.27 -12 17 58.0 – R G45
2016-04-05 07:38:16 C 14 03 30.30 -12 17 57.6 – R G45
2016-04-10 05:20:45 C 13 58 58.00 -12 41 00.9 – u 926
2016-04-10 05:50:08 C 13 58 56.67 -12 41 06.6 – u 926
2016-04-10 06:17:37 C 13 58 55.38 -12 41 12.5 – u 926
2016-04-13 06:45:17 C 13 55 36.24 -12 55 29.6 – u 926
2016-04-13 07:05:19 C 13 55 35.21 -12 55 33.5 – u 926
2016-04-13 07:25:29 C 13 55 34.16 -12 55 37.5 – u 926
2016-04-13 08:06:00 C 13 55 32.04 -12 55 45.6 – q 703
2016-04-13 08:16:40 C 13 55 31.49 -12 55 47.8 – q 703
2016-04-13 08:27:20 C 13 55 30.95 -12 55 49.7 – q 703
2016-04-13 08:38:00 C 13 55 30.39 -12 55 51.8 – q 703
2016-04-13 08:53:34 C 13 55 29.56 -12 55 54.9 – q G96
2016-04-13 08:59:34 C 13 55 29.25 -12 55 56.1 – q G96
2016-04-13 09:05:35 C 13 55 28.93 -12 55 57.3 – q G96
2016-04-13 09:11:35 C 13 55 28.62 -12 55 58.5 – q G96
2016-04-14 06:46:41 C 13 54 25.36 -13 00 15.4 – V G45
2016-04-14 07:05:11 C 13 54 24.34 -13 00 19.8 – V G45
2016-04-14 07:30:47 C 13 54 22.99 -13 00 24.6 – V G45
2016-04-14 08:15:25 C 13 54 20.62 -13 00 33.4 – V G45
2016-04-16 11:09:12 C 13 51 42.95 -13 10 40.9 – L T05
2016-04-16 11:28:51 C 13 51 41.83 -13 10 44.5 – L T05
2016-04-16 11:47:40 C 13 51 40.73 -13 10 48.1 – L T05
2016-04-16 12:08:02 C 13 51 39.59 -13 10 52.4 – L T05
2016-04-17 06:04:54 C 13 50 42.34 -13 14 31.3 – u 926
2016-04-17 06:32:30 C 13 50 40.71 -13 14 36.8 – u 926
2016-04-17 06:38:55 C 13 50 40.27 -13 14 38.7 – V G45
2016-04-17 06:53:26 C 13 50 39.50 -13 14 41.2 – u 926
2016-04-17 07:01:38 C 13 50 38.94 -13 14 43.1 – V G45
2016-04-17 07:24:17 C 13 50 37.64 -13 14 47.7 – V G45
2016-04-17 07:44:00 C 13 50 36.47 -13 14 51.9 – V G45
2016-04-25 05:41:09 C 13 39 22.25 -13 54 13.8 – u 926
2016-04-25 06:02:51 C 13 39 20.79 -13 54 18.6 – u 926
2016-04-25 06:23:11 C 13 39 19.42 -13 54 23.1 – u 926
2016-04-26 08:32:22 C 13 37 39.29 -14 00 00.7 – o 926
2016-04-26 08:49:18 C 13 37 38.16 -14 00 04.3 – o 926
2016-04-26 09:08:35 C 13 37 36.86 -14 00 08.3 – o 926
2016-04-27 05:47:01 C 13 36 18.23 -14 04 38.9 – R G45
2016-04-27 05:53:26 C 13 36 17.80 -14 04 40.2 – R G45
2016-04-27 05:55:10 C 13 36 17.69 -14 04 40.6 – R G45
2016-04-27 05:55:16 C 13 36 17.69 -14 04 40.8 – R G45
2016-04-27 05:59:53 C 13 36 17.35 -14 04 41.8 – R G45
2016-04-27 06:01:43 C 13 36 17.24 -14 04 42.2 – R G45
2016-04-27 06:01:49 C 13 36 17.22 -14 04 42.1 – R G45
2016-04-27 06:06:05 C 13 36 16.93 -14 04 43.0 – R G45
2016-04-27 06:12:26 C 13 36 16.50 -14 04 44.4 – R G45
2016-04-27 06:12:32 C 13 36 16.48 -14 04 44.5 – R G45
2016-04-27 06:19:16 C 13 36 16.03 -14 04 45.9 – R G45
2016-04-27 06:19:22 C 13 36 16.02 -14 04 45.8 – R G45
2016-04-27 08:36:03 C 13 36 06.70 -14 05 15.0 – u 926