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
2009-02-28 01:52:26 C 11 31 15.27 +05 16 13.1 c A24
2009-02-28 01:53:52 C 11 31 15.00 +05 16 19.4 c A24
2009-02-28 02:14:26 C 11 31 10.87 +05 17 53.4 c A24
2009-02-28 02:36:25 C 11 31 06.46 +05 19 34.0 c A24
2009-02-28 02:58:24 C 11 31 02.02 +05 21 14.5 c A24
2009-03-01 07:30:38 C 11 25 31.14 +07 30 34.4 16.9 c 704
2009-03-01 07:56:20 C 11 25 25.95 +07 32 29.6 17.4 c 704
2009-03-01 08:17:00 C 11 25 21.78 +07 34 01.5 17.3 c 704
2009-03-01 08:33:17 C 11 25 18.51 +07 35 14.8 17.0 c 704
2009-03-01 08:50:04 C 11 25 15.11 +07 36 30.0 17.0 c 704
2009-03-02 05:19:58 C 11 21 19.90 +09 07 15.7 o 691
2009-03-02 05:45:23 C 11 21 14.84 +09 09 07.7 o 691
2009-03-02 06:12:02 C 11 21 09.53 +09 11 04.6 o 691
2009-03-02 06:47:26 C 11 21 02.34 +09 13 39.3 17.7 c 704
2009-03-02 07:04:13 C 11 20 58.94 +09 14 51.9 17.0 c 704
2009-03-02 07:22:18 C 11 20 55.32 +09 16 11.3 17.0 c 704
2009-03-02 07:56:40 C 11 20 48.43 +09 18 41.7 16.8 c 704
2009-03-02 22:40:59 C 11 17 59.97 +10 22 28.3 16.4 r 145
2009-03-02 22:44:39 C 11 17 59.27 +10 22 43.6 16.6 r 145
2009-03-02 22:47:42 C 11 17 58.67 +10 22 56.8 16.6 r 145
2009-03-02 22:50:09 C 11 17 58.19 +10 23 07.3 16.5 r 145
2009-03-02 22:57:54 C 11 17 56.66 +10 23 40.7 16.5 r 145
2009-03-03 02:08:41 C 11 17 21.62 +10 37 23.5 r H53
2009-03-03 02:12:41 C 11 17 20.67 +10 37 41.2 r H53
2009-03-03 02:16:41 C 11 17 19.84 +10 37 57.8 r H53
2009-03-03 02:20:42 C 11 17 19.14 +10 38 13.8 r H53
2009-03-03 02:25:48 C 11 17 18.20 +10 38 37.9 r H53
2009-03-03 02:29:49 C 11 17 17.43 +10 38 54.3 r H53
2009-03-04 09:39:26 C 11 11 21.57 +12 49 42.1 r H45
2009-03-04 09:41:07 C 11 11 21.29 +12 49 49.2 r H45
2009-03-04 09:43:57 C 11 11 20.71 +12 50 00.9 r H45
2009-03-04 09:45:37 C 11 11 20.41 +12 50 07.5 r H45
2009-03-04 09:46:23 C 11 11 20.26 +12 50 10.6 r H45
2009-03-04 17:50:58 C 11 09 52.87 +13 23 02.3 i 071
2009-03-04 17:52:02 C 11 09 52.83 +13 23 09.6 i 071
2009-03-04 17:54:09 C 11 09 52.19 +13 23 17.2 i 071
2009-03-04 17:55:13 C 11 09 52.26 +13 23 17.0 i 071
2009-03-07 19:49:21 C 10 56 29.16 +18 05 58.5 w 160
2009-03-07 19:52:39 C 10 56 28.54 +18 06 11.1 w 160
2009-03-07 19:55:56 C 10 56 27.93 +18 06 22.9 w 160
2009-03-07 19:59:15 C 10 56 27.33 +18 06 34.7 w 160
2009-03-07 21:28:23 C 10 56 11.22 +18 11 54.6 o B88
2009-03-07 21:39:05 C 10 56 09.31 +18 12 33.5 o B88
2009-03-07 21:49:48 C 10 56 07.37 +18 13 11.3 o B88
2009-03-08 01:55:52 C 10 55 22.97 +18 27 40.7 o B75
2009-03-13 21:55:10 C 10 32 55.12 +25 34 56.9 v 204
2009-03-13 21:59:55 C 10 32 54.40 +25 35 09.1 v 204
2009-03-13 23:37:39 C 10 32 39.56 +25 39 20.3 v 204
2009-03-13 23:42:15 C 10 32 38.86 +25 39 31.6 v 204
2009-03-17 03:39:10 C 10 22 17.14 +28 36 38.8 r H26