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
2016-08-24 06:51:52 S 16 46 47.93 -39 29 55.8 L C51
2016-08-24 19:26:37 S 16 49 43.409 -39 29 46.14 L C51
2016-08-26 02:53:28 S 16 57 02.666 -39 28 12.86 L C51
2016-08-26 15:28:12 S 16 59 58.546 -39 27 07.31 L C51
2016-08-31 11:49:20 S 17 27 01.663 -39 04 52.61 L C51
2016-08-31 21:15:23 S 17 29 12.425 -39 02 07.44 L C51
2016-09-01 03:32:45 S 17 30 39.468 -39 00 11.70 L C51
2016-09-01 16:07:19 S 17 33 33.418 -38 56 11.54 L C51
2016-09-02 17:16:47 S 17 39 19.908 -38 47 26.66 L C51
2016-09-26 13:18:06 C 19 36 09.62 -32 11 12.8 o Q62
2016-09-26 14:09:01 C 19 36 18.46 -32 10 25.2 o Q62
2016-09-26 14:24:34 C 19 36 21.16 -32 10 11.0 o Q62
2016-10-08 05:27:29 S 20 21 08.52 -27 47 49.6 L C51
2016-10-08 08:36:10 S 20 21 36.38 -27 44 49.2 L C51
2016-10-08 11:44:51 S 20 22 04.15 -27 41 48.6 L C51
2016-10-08 14:53:32 S 20 22 31.84 -27 38 48.2 L C51
2016-10-09 03:28:06 S 20 24 22.20 -27 26 46.2 L C51
2016-10-09 06:36:47 S 20 24 49.73 -27 23 45.4 L C51
2016-10-09 09:45:28 S 20 25 17.02 -27 20 45.3 L C51
2016-10-09 16:02:50 S 20 26 11.60 -27 14 44.1 L C51
2016-10-14 12:07:37 C 20 42 25.89 -25 23 56.4 q Q60
2016-10-14 12:21:26 C 20 42 27.69 -25 23 43.8 q Q60
2016-10-14 12:35:16 C 20 42 29.48 -25 23 30.5 q Q60
2016-10-17 03:23:11 C 20 50 51.51 -24 24 15.2 o 926
2016-10-17 03:34:23 C 20 50 52.94 -24 24 04.7 o 926
2016-10-17 03:46:09 C 20 50 54.45 -24 23 53.7 o 926
2016-10-19 05:35:23 S 20 57 20.65 -23 36 57.8 L C51
2016-10-19 11:52:45 S 20 58 08.73 -23 31 05.0 L C51
2016-10-19 15:01:26 S 20 58 32.68 -23 28 08.6 L C51
2016-10-19 18:10:07 S 20 58 56.60 -23 25 11.5 L C51
2016-10-20 03:35:59 S 21 00 08.03 -23 16 24.7 L C51
2016-10-20 06:44:40 S 21 00 31.87 -23 13 28.1 L C51
2016-10-20 09:53:21 S 21 00 55.56 -23 10 32.2 L C51
2016-10-20 13:02:02 S 21 01 19.28 -23 07 36.4 L C51
2016-10-20 16:10:33 S 21 01 42.87 -23 04 41.1 L C51
2016-10-20 16:10:43 S 21 01 42.86 -23 04 41.0 L C51
2016-10-20 17:44:58 S 21 01 54.72 -23 03 13.2 L C51
2016-10-21 01:36:36 S 21 02 53.66 -22 55 54.6 L C51
2016-10-21 02:26:08 C 21 02 59.88 -22 55 17.5 q 703
2016-10-21 02:34:49 C 21 03 00.93 -22 55 08.3 q 703
2016-10-21 02:43:30 C 21 03 02.02 -22 54 59.7 q 703
2016-10-21 02:52:13 C 21 03 03.00 -22 54 50.8 q 703
2016-10-21 03:10:51 S 21 03 05.39 -22 54 27.3 L C51
2016-10-21 03:11:02 S 21 03 05.43 -22 54 27.0 L C51
2016-10-21 04:45:17 S 21 03 17.19 -22 53 00.2 L C51
2016-10-21 06:19:32 S 21 03 28.87 -22 51 31.2 L C51
2016-10-21 07:53:58 S 21 03 40.65 -22 50 04.3 L C51
2016-10-21 09:28:13 S 21 03 52.30 -22 48 36.5 L C51
2016-10-21 11:02:39 S 21 04 04.03 -22 47 09.3 L C51
2016-10-21 12:36:54 S 21 04 15.71 -22 45 40.4 L C51