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
2009-02-20 09:23:31 C 12 06 40.64 -08 58 07.3 r H45
2009-02-20 09:25:25 C 12 06 40.27 -08 57 58.7 r H45
2009-02-20 09:26:21 C 12 06 40.08 -08 57 54.4 r H45
2009-02-20 09:27:12 C 12 06 39.89 -08 57 50.3 r H45
2009-02-20 09:28:39 C 12 06 39.60 -08 57 44.1 r H45
2009-02-20 09:33:14 C 12 06 38.73 -08 57 23.7 r H45
2009-02-20 09:41:11 C 12 06 37.76 -08 56 47.2 r 703
2009-02-20 09:51:36 C 12 06 35.74 -08 56 00.0 r 703
2009-02-20 10:02:02 C 12 06 33.69 -08 55 13.5 r 703
2009-02-20 10:12:38 C 12 06 31.68 -08 54 26.4 r 703
2009-02-21 09:10:02 C 12 02 15.04 -07 10 43.3 r H45
2009-02-21 09:11:19 C 12 02 14.83 -07 10 37.1 r H45
2009-02-21 09:12:15 C 12 02 14.62 -07 10 34.1 r H45
2009-02-21 09:13:19 C 12 02 14.42 -07 10 28.8 r H45
2009-02-21 09:14:34 C 12 02 14.16 -07 10 23.1 r H45
2009-02-21 09:15:35 C 12 02 13.93 -07 10 18.0 r H45
2009-02-21 15:51:08 C 12 01 00.62 -06 40 12.2 r 379
2009-02-21 16:03:08 C 12 00 58.28 -06 39 16.9 r 379
2009-02-21 16:05:49 C 12 00 57.75 -06 39 04.8 r 379
2009-02-21 16:08:29 C 12 00 57.21 -06 38 52.9 r 379
2009-02-21 16:15:10 C 12 00 55.93 -06 38 21.9 r 379
2009-02-21 16:20:29 C 12 00 54.83 -06 37 57.8 r 379
2009-02-21 16:29:48 C 12 00 53.02 -06 37 14.7 r 379
2009-02-21 16:32:28 C 12 00 52.50 -06 37 02.5 r 379
2009-02-21 16:39:10 C 12 00 51.17 -06 36 32.0 r 379
2009-02-21 16:44:30 C 12 00 50.13 -06 36 07.6 r 379
2009-02-22 01:32:43 C 11 59 10.29 -05 55 47.8 v 204
2009-02-22 01:35:36 C 11 59 09.72 -05 55 34.5 v 204
2009-02-22 01:38:10 C 11 59 09.22 -05 55 22.7 v 204
2009-02-22 01:42:05 C 11 59 08.45 -05 55 04.6 v 204
2009-02-22 01:44:59 C 11 59 07.88 -05 54 51.3 v 204
2009-02-22 09:30:05 C 11 57 39.17 -05 19 01.7 r H45
2009-02-22 09:31:21 C 11 57 38.91 -05 18 55.7 r H45
2009-02-22 09:32:43 C 11 57 38.64 -05 18 49.6 r H45
2009-02-22 09:34:09 C 11 57 38.36 -05 18 43.1 r H45
2009-02-22 09:36:32 C 11 57 37.89 -05 18 31.3 r H45
2009-02-23 05:44:23 C 11 53 49.00 -03 45 07.7 r H53
2009-02-23 05:46:22 C 11 53 48.86 -03 45 02.2 r H53
2009-02-23 05:49:28 C 11 53 48.14 -03 44 42.5 r H53
2009-02-23 05:51:27 C 11 53 47.64 -03 44 32.1 r H53
2009-02-23 05:53:31 C 11 53 47.38 -03 44 24.2 r H53
2009-02-23 05:56:36 C 11 53 46.50 -03 44 09.8 r H53
2009-02-23 07:55:59 C 11 53 23.43 -03 34 51.5 17.3 c 704
2009-02-23 08:20:36 C 11 53 18.48 -03 32 56.5 17.4 c 704
2009-02-23 08:37:19 C 11 53 15.13 -03 31 38.7 17.4 c 704
2009-02-23 08:54:27 C 11 53 11.70 -03 30 18.8 17.5 c 704
2009-02-23 09:10:58 C 11 53 08.40 -03 29 01.4 17.4 c 704
2009-02-25 00:52:07 C 11 45 29.11 -00 23 15.5 r J75
2009-02-25 01:07:58 C 11 45 25.91 -00 22 01.4 r J75
2009-02-25 01:26:40 C 11 45 22.14 -00 20 34.0 r J75