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
2013-10-05 07:17:30 C 00 31 40.57 -01 04 31.2 q 703
2013-10-05 07:25:33 C 00 31 40.05 -01 04 30.4 q 703
2013-10-05 07:33:36 C 00 31 39.61 -01 04 29.1 q 703
2013-10-12 04:31:16 C 00 23 33.01 -00 40 54.4 q G96
2013-10-12 04:42:14 C 00 23 32.50 -00 40 52.5 q G96
2013-10-12 04:53:11 C 00 23 32.00 -00 40 50.7 q G96
2013-10-12 05:04:11 C 00 23 31.48 -00 40 49.2 q G96
2013-10-14 04:46:48 C 00 21 31.19 -00 33 08.5 r Y00
2013-10-14 04:55:52 C 00 21 30.78 -00 33 07.0 r Y00
2013-10-14 05:05:57 C 00 21 30.32 -00 33 05.9 r Y00
2013-10-22 05:09:00 C 00 15 13.72 +00 00 11.2 q G96
2013-10-22 05:24:04 C 00 15 13.29 +00 00 14.0 q G96
2013-10-22 05:31:35 C 00 15 13.08 +00 00 15.6 q G96
2013-10-28 04:06:53 C 00 12 20.68 +00 28 36.3 V G45
2013-10-28 04:27:27 C 00 12 20.32 +00 28 40.8 V G45
2013-10-28 05:15:25 C 00 12 19.49 +00 28 50.8 V G45
2013-10-28 05:35:50 C 00 12 19.14 +00 28 55.0 V G45
2013-10-30 05:20:47 C 00 11 41.66 +00 39 06.2 q G96
2013-10-30 05:30:33 C 00 11 41.52 +00 39 08.2 q G96
2013-10-30 05:40:17 C 00 11 41.39 +00 39 10.3 q G96
2013-10-30 05:52:54 C 00 11 41.20 +00 39 13.2 q G96
2013-11-06 13:17:58 C 00 10 45.35 +01 19 34.7 q D29
2013-11-06 13:52:20 C 00 10 45.29 +01 19 42.8 q D29
2013-11-26 02:15:39 C 00 17 12.38 +03 27 59.5 q G96
2013-11-26 02:29:26 C 00 17 12.71 +03 28 04.0 q G96
2013-11-26 02:43:41 C 00 17 13.03 +03 28 08.4 q G96
2013-11-26 02:57:27 C 00 17 13.39 +03 28 12.4 q G96
2013-11-26 05:19:47 C 00 17 16.75 +03 28 55.7 q 703
2013-11-26 05:29:13 C 00 17 16.94 +03 28 57.9 q 703
2013-11-26 05:38:41 C 00 17 17.15 +03 29 01.2 q 703
2013-11-26 05:48:08 C 00 17 17.39 +03 29 03.9 q 703
2013-11-30 10:35:20 C 00 20 03.17 +04 00 00.5 q D29
2013-11-30 11:15:25 C 00 20 04.35 +04 00 13.1 q D29
2013-11-30 11:55:30 C 00 20 05.45 +04 00 25.6 q D29
2013-12-14 04:08:33 C 00 31 36.33 +05 47 48.9 q G96
2013-12-14 04:20:04 C 00 31 36.79 +05 47 52.4 q G96
2013-12-14 04:31:33 C 00 31 37.24 +05 47 56.5 q G96
2013-12-14 04:43:01 C 00 31 37.67 +05 48 00.3 q G96
2013-12-30 03:03:53 C 00 48 45.01 +08 02 27.0 q G96
2013-12-30 03:16:15 C 00 48 45.59 +08 02 31.1 q G96
2013-12-30 03:28:33 C 00 48 46.17 +08 02 36.1 q G96
2013-12-30 03:40:52 C 00 48 46.80 +08 02 40.2 q G96
2014-11-26 09:01:19 C 07 58 30.17 +29 27 14.2 u H21
2014-11-26 09:21:42 C 07 58 29.84 +29 27 17.5 u H21
2014-11-26 09:41:15 C 07 58 29.46 +29 27 21.2 u H21
2014-12-26 12:35:06 C 07 34 00.727 +31 33 16.47 L F51
2014-12-26 13:10:32 C 07 33 58.945 +31 33 21.73 L F51
2014-12-26 13:28:21 C 07 33 58.056 +31 33 24.52 L F51
2015-01-20 07:46:03 C 07 02 48.184 +32 31 03.78 L F51
2015-01-20 08:03:14 C 07 02 47.279 +32 31 04.21 L F51