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
2016-05-05 06:57:18 C 13 23 43.34 -14 49 07.4 – q H45
2016-05-05 06:58:42 C 13 23 43.24 -14 49 07.8 – q H45
2016-05-05 07:00:05 C 13 23 43.15 -14 49 08.1 – q H45
2016-05-05 07:01:19 C 13 23 43.08 -14 49 08.3 – q H45
2016-05-05 07:02:43 C 13 23 42.96 -14 49 08.8 – q H45
2016-05-05 07:04:13 C 13 23 42.87 -14 49 09.0 – q H45
2016-05-06 08:26:38 C 13 22 05.94 -14 55 21.4 – L T05
2016-05-06 08:45:46 C 13 22 04.61 -14 55 26.4 – L T05
2016-05-06 08:47:51 C 13 22 04.46 -14 55 26.5 – L T05
2016-05-06 09:04:17 C 13 22 03.31 -14 55 31.0 – L T05
2016-05-06 09:07:04 C 13 22 03.11 -14 55 31.4 – L T05
2016-05-06 09:22:39 C 13 22 02.05 -14 55 35.2 – L T05
2016-05-06 09:25:34 C 13 22 01.85 -14 55 36.2 – L T05
2016-05-06 09:44:06 C 13 22 00.54 -14 55 40.4 – L T05
2016-05-07 05:14:24 C 13 20 46.58 -15 00 37.3 – R G45
2016-05-07 05:20:34 C 13 20 46.16 -15 00 39.0 – R G45
2016-05-07 05:26:58 C 13 20 45.73 -15 00 40.6 – R G45
2016-05-07 05:32:59 C 13 20 45.33 -15 00 42.3 – R G45
2016-05-09 05:59:09 C 13 17 44.16 -15 13 10.8 – q 703
2016-05-09 06:07:10 C 13 17 43.59 -15 13 13.3 – q 703
2016-05-09 06:15:08 C 13 17 43.04 -15 13 15.4 – q 703
2016-05-09 06:23:07 C 13 17 42.44 -15 13 17.4 – q 703
2016-05-10 05:09:05 C 13 16 19.70 -15 19 20.9 – R G45
2016-05-10 05:15:56 C 13 16 19.26 -15 19 22.7 – R G45
2016-05-10 05:23:50 C 13 16 18.75 -15 19 24.7 – R G45
2016-05-10 05:30:17 C 13 16 18.34 -15 19 26.4 – R G45
2016-05-10 05:36:17 C 13 16 17.93 -15 19 28.1 – R G45
2016-05-10 05:42:39 C 13 16 17.53 -15 19 29.8 – R G45
2016-05-13 05:18:33 C 13 12 06.98 -15 39 21.7 – R G45
2016-05-13 05:24:31 C 13 12 06.61 -15 39 23.5 – R G45
2016-05-13 05:31:00 C 13 12 06.23 -15 39 25.1 – R G45
2016-05-13 05:37:33 C 13 12 05.82 -15 39 27.2 – R G45
2016-05-23 21:58:35 C 13 00 13.31 -17 03 02.1 – q Y00
2016-05-23 22:12:31 C 13 00 12.76 -17 03 07.0 – q Y00
2016-05-23 22:27:51 C 13 00 12.16 -17 03 12.5 – q Y00
2016-05-24 03:46:03 C 13 00 00.82 -17 05 28.4 – o 926
2016-05-24 04:11:27 C 12 59 59.81 -17 05 37.8 – o 926
2016-05-24 04:36:40 C 12 59 58.82 -17 05 47.3 – o 926
2016-05-24 20:31:31 C 12 59 26.55 -17 11 27.3 – o K95
2016-05-24 20:41:55 C 12 59 26.17 -17 11 31.0 – o K95
2016-05-24 20:52:20 C 12 59 25.75 -17 11 35.1 – o K95
2016-05-29 04:14:42 C 12 56 36.52 -17 53 25.2 – R G45
2016-05-29 04:22:34 C 12 56 36.33 -17 53 29.0 – R G45
2016-05-29 04:29:33 C 12 56 36.12 -17 53 31.8 – R G45
2016-05-29 04:36:17 C 12 56 35.97 -17 53 34.6 – R G45
2016-05-29 04:43:14 C 12 56 35.77 -17 53 37.7 – R G45
2016-05-29 04:50:19 C 12 56 35.57 -17 53 40.6 – R G45
2016-05-30 07:46:11 C 12 56 02.97 -18 05 10.0 – L T05
2016-05-30 08:02:11 C 12 56 02.58 -18 05 16.7 – L T05
2016-05-30 08:35:38 C 12 56 01.79 -18 05 30.9 – L T05