364877 (2008 EM9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8524697214 ± 2.72e-08
Semi-major axis (a)1.9588357872 AU ± 8.65e-09
Inclination (i)9.43927817° ± 6.13e-06
Long. of Asc. Node (Ω)229.68324609° ± 3.04e-05
Arg. of Perihelion (ω)181.79289790° ± 3.11e-05
Mean Anomaly (M)185.09041969° ± 1.08e-05
Mean Motion (n)0.3595135235°/day ± 2.38e-09
Perihelion dist (q)0.28898759 AU ± 5.33e-08
Aphelion dist (Q)3.62868399 AU ± 5.56e-08
Orbital Period2.74155552 yr ± 1.82e-08
Physical Parameters
H (abs. magnitude)17.34
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.570″
Uncertainty0
Orbit TypeApollo
MOID0.134581 AU
Observations Used493
Oppositions10
Arc Total2008-2024
First Observation Used2008-03-09
Last Observation Used2024-05-18
Observations (678)
Date Type RA Dec Mag Band Observatory
2008-04-05 06:58:37 C 12 21 48.78 -17 16 12.5 r 703
2008-04-05 07:08:54 C 12 21 47.66 -17 15 58.3 r 703
2008-04-05 08:09:06 C 12 21 41.00 -17 14 37.3 r 703
2008-04-05 08:21:41 C 12 21 39.63 -17 14 20.2 r 703
2008-04-05 08:34:09 C 12 21 38.26 -17 14 04.0 r 703
2008-04-05 08:46:37 C 12 21 36.86 -17 13 46.7 r 703
2008-04-12 22:01:54 C 12 05 31.71 -13 34 01.4 r 176
2008-04-12 22:04:09 C 12 05 31.54 -13 33 59.3 r 176
2008-04-12 22:06:23 C 12 05 31.39 -13 33 56.3 r 176
2008-04-12 22:08:37 C 12 05 31.19 -13 33 54.3 r 176
2008-04-12 22:10:51 C 12 05 31.03 -13 33 52.0 r 176
2008-04-12 22:13:05 C 12 05 30.85 -13 33 49.5 r 176
2008-04-14 05:43:41 C 12 03 19.39 -13 00 41.5 18.9 c 704
2008-04-14 05:59:42 C 12 03 18.27 -13 00 25.6 18.7 c 704
2008-04-14 06:15:39 C 12 03 17.16 -13 00 09.9 18.8 c 704
2008-04-14 06:31:31 C 12 03 16.08 -12 59 52.9 19.3 c 704
2008-04-14 06:47:35 C 12 03 14.90 -12 59 36.1 19.0 c 704
2008-04-22 04:22:11 C 11 53 12.53 -10 10 25.1 o H55
2008-04-22 04:29:55 C 11 53 12.17 -10 10 19.5 o H55
2008-04-22 04:37:39 C 11 53 11.87 -10 10 13.6 o H55
2008-04-23 04:24:39 C 11 52 16.28 -09 52 20.7 o H55
2008-04-23 04:33:15 C 11 52 15.93 -09 52 14.5 o H55
2008-04-23 04:41:50 C 11 52 15.58 -09 52 08.5 o H55
2008-04-26 20:29:35 C 11 49 23.63 -08 52 00.7 o 151
2008-04-26 20:33:47 C 11 49 23.48 -08 51 57.9 o 151
2008-04-26 20:37:58 C 11 49 23.35 -08 51 54.9 o 151
2008-05-22 03:57:02 C 11 46 34.31 -05 06 54.9 22.1 o H55
2008-05-22 04:15:03 C 11 46 34.53 -05 06 52.1 22.1 o H55
2008-05-22 04:33:46 C 11 46 34.77 -05 06 49.0 21.9 o H55
2009-06-02 09:11:50 C 14 49 09.150 -15 44 50.10 o 568
2009-06-02 09:23:36 C 14 49 08.653 -15 44 47.64 o 568
2009-06-02 09:29:20 C 14 49 08.413 -15 44 46.43 o 568
2009-06-22 09:22:36 C 14 33 22.523 -14 20 01.14 o 568
2009-06-22 09:28:36 C 14 33 22.379 -14 20 00.24 o 568
2010-07-03 20:42:03 C 16 32 27.72 -09 20 33.7 r 157
2010-07-03 20:47:43 C 16 32 26.97 -09 20 31.4 r 157
2010-07-03 20:53:23 C 16 32 26.21 -09 20 29.1 r 157
2010-07-05 20:57:06 C 16 26 09.33 -09 00 34.5 r J75
2010-07-05 21:17:45 C 16 26 06.61 -09 00 26.0 r J75
2010-07-05 21:38:20 C 16 26 03.85 -09 00 17.4 r J75
2010-07-05 22:36:13 C 16 25 56.15 -08 59 54.7 v 204
2010-07-05 22:50:52 C 16 25 54.16 -08 59 48.3 v 204
2010-07-06 05:18:28 C 16 25 03.90 -08 57 08.0 r 703
2010-07-06 05:20:06 C 16 25 03.71 -08 57 06.6 19.4 c 704
2010-07-06 05:25:03 C 16 25 03.00 -08 57 04.3 r 703
2010-07-06 05:31:38 C 16 25 02.13 -08 57 02.5 r 703
2010-07-06 05:36:42 C 16 25 01.55 -08 57 00.6 19.9 c 704
2010-07-06 05:38:09 C 16 25 01.20 -08 56 58.8 r 703
2010-07-06 05:52:59 C 16 24 59.30 -08 56 53.7 19.5 c 704
2010-07-06 06:09:13 C 16 24 56.99 -08 56 48.6 20.4 c 704