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
1988-09-14 09:38:30 00 42 12.98 -05 44 48.4 c 675
1988-09-14 10:22:29 00 42 10.01 -05 44 38.2 c 675
1991-04-08 02:37:00 A 13 37 20.50 -09 11 58.1 C 809
1991-04-08 02:55:59 A 13 37 19.50 -09 12 00.7 C 809
1991-04-08 03:15:00 A 13 37 18.41 -09 12 01.9 C 809
1991-04-10 04:00:59 A 13 34 48.23 -09 15 56.9 18.5 C 809
1991-04-10 04:20:00 A 13 34 47.16 -09 15 58.7 C 809
1991-04-10 04:38:59 A 13 34 46.02 -09 16 00.0 C 809
1991-04-19 03:33:00 A 13 22 07.82 -09 33 40.9 18.5 809
1991-04-19 03:51:59 A 13 22 06.40 -09 33 42.8 809
1991-04-19 04:11:00 A 13 22 05.23 -09 33 43.7 809
1994-03-14 07:45:00 11 56 06.09 +07 27 23.7 261
1994-03-14 08:30:00 11 56 03.51 +07 27 34.6 261
1997-03-12 06:22:44 c 10 38 34.91 +17 04 37.4 i 691
1997-03-12 07:15:07 c 10 38 31.85 +17 04 47.4 i 691
1997-03-12 08:25:34 c 10 38 27.79 +17 05 01.5 i 691
1997-03-13 07:50:40 c 10 37 09.57 +17 09 36.4 i 691
1997-03-13 07:56:31 c 10 37 09.26 +17 09 37.1 i 691
1997-03-13 08:04:30 c 10 37 08.78 +17 09 39.3 i 691
1997-03-13 10:17:36 C 10 37 01.43 +17 10 06.7 c 608
1997-03-13 11:24:43 C 10 36 57.57 +17 10 18.7 c 608
1997-03-14 07:04:35 c 10 35 52.45 +17 13 57.6 i 691
1997-03-14 07:10:58 c 10 35 52.10 +17 13 58.8 i 691
1997-03-14 07:17:04 c 10 35 51.76 +17 13 59.9 i 691
1997-03-18 02:27:37 C 10 30 55.33 +17 29 09.1 599
1997-03-18 02:34:20 C 10 30 54.90 +17 29 10.8 599
1997-03-18 02:43:16 C 10 30 54.42 +17 29 13.0 599
1997-03-27 05:29:48 C 10 20 11.67 +17 52 21.3 658
1997-03-27 05:34:16 C 10 20 11.43 +17 52 22.0 658
1997-03-27 05:38:47 C 10 20 11.20 +17 52 21.0 658
1997-03-27 05:43:53 C 10 20 10.99 +17 52 21.6 658
1997-03-27 05:48:21 C 10 20 10.87 +17 52 23.3 658
1997-03-29 08:30:14 C 10 17 59.59 +17 54 56.7 a 696
1997-03-29 08:33:04 C 10 17 59.48 +17 54 57.1 a 696
1997-03-29 08:35:46 C 10 17 59.39 +17 54 57.0 a 696
1997-04-08 22:03:59 C 10 09 16.01 +17 51 51.9 z 104
1997-04-08 22:14:00 C 10 09 15.77 +17 51 51.5 z 104
1997-04-08 22:23:01 C 10 09 15.42 +17 51 51.2 z 104
1997-05-01 21:12:22 C 10 04 30.90 +16 24 14.2 z 104
1997-05-01 21:23:49 C 10 04 31.05 +16 24 10.5 z 104
1997-05-01 21:35:29 C 10 04 31.18 +16 24 06.7 z 104
2001-11-20 08:57:27 C 05 18 31.68 +30 57 47.9 c 696
2001-11-20 09:03:10 C 05 18 31.30 +30 57 48.4 c 696
2003-03-31 03:51:45 C 08 44 28.82 +25 47 17.1 c 711
2003-03-31 04:15:17 C 08 44 28.61 +25 47 14.3 c 711
2003-03-31 04:38:54 C 08 44 28.33 +25 47 11.5 c 711
2004-10-08 09:00:08 C 05 02 09.72 +27 44 44.9 o 696
2004-10-08 09:29:07 C 05 02 09.46 +27 44 49.1 o 696
2007-08-22 09:49:49 C 03 56 51.84 +21 13 43.5 o 691
2007-08-22 10:07:59 C 03 56 52.60 +21 13 48.7 o 691