307918 (2004 EU9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5052363954 ± 4.18e-08
Semi-major axis (a)0.8804520982 AU ± 5.72e-10
Inclination (i)28.58435208° ± 6.01e-06
Long. of Asc. Node (Ω)161.07845373° ± 2.92e-06
Arg. of Perihelion (ω)202.42572345° ± 5.96e-06
Mean Anomaly (M)215.48202538° ± 1.03e-05
Mean Motion (n)1.1930363523°/day ± 1.16e-09
Perihelion dist (q)0.43561565 AU ± 3.68e-08
Aphelion dist (Q)1.32528854 AU ± 3.68e-08
Orbital Period0.82614941 yr ± 8.06e-10
Physical Parameters
H (abs. magnitude)19.02
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.368″
Uncertainty0
Orbit TypeAten
MOID0.167618 AU
Observations Used530
Oppositions4
Arc Total2004-2024
First Observation Used2004-03-06
Last Observation Used2024-04-20
Observations (569)
Date Type RA Dec Mag Band Observatory
2009-03-17 03:41:30 C 10 22 16.81 +28 36 43.9 r H26
2009-03-17 03:43:50 C 10 22 16.49 +28 36 48.6 r H26
2009-03-17 03:46:09 C 10 22 16.18 +28 36 53.7 r H26
2009-03-17 03:48:29 C 10 22 15.86 +28 36 58.6 r H26
2009-03-17 03:50:49 C 10 22 15.52 +28 37 03.9 r H26
2009-03-18 02:10:38 C 10 19 27.82 +29 22 37.7 c 924
2009-03-18 02:13:31 C 10 19 27.71 +29 22 45.4 c 924
2009-03-18 02:18:50 C 10 19 27.06 +29 22 54.6 c 924
2009-03-18 02:21:59 C 10 19 26.60 +29 23 01.9 c 924
2009-03-19 01:00:01 C 10 16 42.64 +30 06 24.5 r 130
2009-03-19 01:02:55 C 10 16 42.28 +30 06 29.7 r 130
2009-03-19 01:05:06 C 10 16 42.07 +30 06 34.1 r 130
2009-03-19 01:07:15 C 10 16 41.83 +30 06 38.2 r 130
2009-03-21 07:12:40 C 10 10 43.17 +31 40 00.8 r 703
2009-03-21 07:19:43 C 10 10 42.45 +31 40 11.8 r 703
2009-03-21 07:26:44 C 10 10 41.62 +31 40 22.7 r 703
2009-03-21 07:33:49 C 10 10 40.87 +31 40 33.8 r 703
2010-04-09 11:12:49 C 17 50 05.76 +43 05 54.8 u 448
2010-04-09 11:28:56 C 17 50 07.85 +43 06 40.3 u 448
2010-04-09 11:45:54 C 17 50 10.05 +43 07 29.0 u 448
2010-04-21 11:31:02 S 18 38 35.74 +56 27 15.7 L C51
2010-04-21 14:41:33 S 18 39 16.39 +56 35 39.3 L C51
2010-04-21 16:16:54 S 18 39 36.68 +56 39 53.7 L C51
2010-04-21 17:52:04 S 18 39 56.93 +56 44 02.9 L C51
2010-04-21 19:27:25 S 18 40 17.37 +56 48 16.4 L C51
2010-04-21 21:02:35 S 18 40 37.72 +56 52 29.1 L C51
2010-04-21 22:37:56 S 18 40 58.28 +56 56 39.4 L C51
2010-04-22 01:48:16 S 18 41 39.50 +57 04 59.0 L C51
2010-04-22 01:48:27 S 18 41 39.54 +57 05 00.1 L C51
2010-04-22 03:23:37 S 18 42 00.27 +57 09 09.6 L C51
2010-04-22 04:58:47 S 18 42 20.87 +57 13 20.2 L C51
2010-04-22 04:58:58 S 18 42 20.98 +57 13 20.6 L C51
2010-04-22 06:34:08 S 18 42 41.67 +57 17 30.5 L C51
2010-04-22 08:09:18 S 18 43 02.78 +57 21 39.3 L C51
2013-02-20 00:21:49 C 02 26 22.79 -18 40 04.5 u 807
2013-02-20 00:27:12 C 02 26 24.52 -18 39 51.8 u 807
2013-02-20 00:32:34 C 02 26 26.24 -18 39 38.5 u 807
2014-02-23 00:03:08 C 13 33 58.66 +00 53 17.2 q Z81
2014-02-23 00:40:52 C 13 33 56.02 +00 55 08.1 q Z81
2014-02-23 01:11:08 C 13 33 53.89 +00 56 36.2 q Z81
2014-03-03 02:11:30 C 13 17 25.70 +11 09 55.0 o G40
2014-03-03 02:21:31 C 13 17 24.58 +11 10 29.0 o G40
2014-03-03 02:41:22 C 13 17 22.36 +11 11 36.3 o G40
2014-03-04 04:21:19 C 13 14 36.62 +12 38 41.3 o G40
2014-03-04 04:32:07 C 13 14 35.37 +12 39 17.9 o G40
2014-03-04 04:41:19 C 13 14 34.28 +12 39 48.7 o G40
2014-03-09 00:31:58 C 13 00 35.04 +19 16 04.2 q Z81
2014-03-09 01:06:01 C 13 00 30.36 +19 18 00.3 q Z81
2014-03-09 01:38:15 C 13 00 25.90 +19 19 50.2 q Z81
2014-03-09 14:48:44 C 12 58 39.577 +20 04 33.93 L F51