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
2016-08-19 07:22:03 S 16 19 17.26 -39 18 31.3 L C51
2016-08-19 10:30:44 S 16 20 00.15 -39 19 07.2 L C51
2016-08-19 12:05:11 S 16 20 21.677 -39 19 24.74 L C51
2016-08-19 13:39:25 S 16 20 43.11 -39 19 41.6 L C51
2016-08-19 15:13:52 S 16 21 04.63 -39 19 58.9 L C51
2016-08-19 16:48:06 S 16 21 26.10 -39 20 16.0 L C51
2016-08-19 18:22:33 S 16 21 47.62 -39 20 32.5 L C51
2016-08-19 23:05:29 S 16 22 52.214 -39 21 20.84 L C51
2016-08-20 02:14:10 S 16 23 35.25 -39 21 51.6 L C51
2016-08-20 06:57:16 S 16 24 39.96 -39 22 36.3 L C51
2016-08-20 08:31:32 S 16 25 01.52 -39 22 50.7 L C51
2016-08-20 10:05:47 S 16 25 23.09 -39 23 04.4 L C51
2016-08-20 10:05:58 S 16 25 23.114 -39 23 04.88 L C51
2016-08-20 11:40:13 S 16 25 44.75 -39 23 19.6 L C51
2016-08-20 13:14:28 S 16 26 06.32 -39 23 32.5 L C51
2016-08-20 13:14:39 S 16 26 06.33 -39 23 32.1 L C51
2016-08-20 14:48:54 S 16 26 28.00 -39 23 46.6 L C51
2016-08-20 16:23:09 S 16 26 49.45 -39 23 59.2 L C51
2016-08-20 19:31:50 S 16 27 32.820 -39 24 25.63 L C51
2016-08-20 21:06:16 S 16 27 54.434 -39 24 37.84 L C51
2016-08-20 22:40:31 S 16 28 15.982 -39 24 49.68 L C51
2016-08-21 00:14:57 S 16 28 37.89 -39 25 00.9 L C51
2016-08-21 01:49:12 S 16 28 59.40 -39 25 13.8 L C51
2016-08-21 03:23:38 S 16 29 21.08 -39 25 25.4 L C51
2016-08-21 04:57:53 S 16 29 42.75 -39 25 36.5 L C51
2016-08-21 06:32:19 S 16 30 04.47 -39 25 47.4 L C51
2016-08-21 08:06:34 S 16 30 26.16 -39 25 58.1 L C51
2016-08-21 12:49:41 S 16 31 31.26 -39 26 29.9 L C51
2016-08-21 14:23:56 S 16 31 52.93 -39 26 39.3 L C51
2016-08-21 15:58:22 S 16 32 14.69 -39 26 50.0 L C51
2016-08-21 17:32:37 S 16 32 36.48 -39 26 57.1 L C51
2016-08-21 20:41:18 S 16 33 19.894 -39 27 17.32 L C51
2016-08-21 22:15:44 S 16 33 41.614 -39 27 25.74 L C51
2016-08-21 23:50:00 S 16 34 03.437 -39 27 33.19 L C51
2016-08-22 01:24:25 S 16 34 25.126 -39 27 42.77 L C51
2016-08-22 02:58:41 S 16 34 46.92 -39 27 50.0 L C51
2016-08-22 04:33:07 S 16 35 08.64 -39 27 58.3 L C51
2016-08-22 09:16:03 S 16 36 13.96 -39 28 19.5 L C51
2016-08-22 10:50:29 S 16 36 35.84 -39 28 27.2 L C51
2016-08-22 13:59:10 S 16 37 19.390 -39 28 38.60 L C51
2016-08-22 20:16:21 S 16 38 46.642 -39 29 00.92 L C51
2016-08-22 20:16:32 S 16 38 46.759 -39 29 01.32 L C51
2016-08-22 23:25:02 S 16 39 30.353 -39 29 10.46 L C51
2016-08-22 23:25:13 S 16 39 30.367 -39 29 11.69 L C51
2016-08-23 02:33:43 S 16 40 14.10 -39 29 21.0 L C51
2016-08-23 02:33:54 S 16 40 14.00 -39 29 21.8 L C51
2016-08-23 08:51:06 S 16 41 41.42 -39 29 34.7 L C51
2016-08-23 15:08:28 S 16 43 08.94 -39 29 45.4 L C51
2016-08-23 18:17:09 S 16 43 52.68 -39 29 49.2 L C51
2016-08-24 00:34:31 S 16 45 20.28 -39 29 55.0 L C51