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
2010-07-06 06:25:23 C 16 24 54.99 -08 56 40.4 19.5 c 704
2010-07-07 04:09:56 C 16 22 06.07 -08 47 47.6 19.3 c 704
2010-07-07 04:25:44 C 16 22 03.97 -08 47 42.2 19.2 c 704
2010-07-07 04:55:46 C 16 22 00.00 -08 47 28.9 18.9 c 704
2010-07-10 00:29:00 C 16 13 20.50 -08 20 16.2 r I20
2010-07-10 00:57:26 C 16 13 16.86 -08 20 05.0 r I20
2010-07-23 03:38:19 C 15 36 42.48 -06 31 19.9 o H21
2010-07-23 03:44:19 C 15 36 41.86 -06 31 18.1 o H21
2010-07-23 03:50:22 C 15 36 41.22 -06 31 16.1 o H21
2010-07-29 02:07:00 C 15 22 53.20 -05 53 21.1 L W91
2010-07-29 02:10:54 C 15 22 52.83 -05 53 20.2 L W91
2010-07-29 02:13:23 C 15 22 52.59 -05 53 19.5 L W91
2010-07-29 02:17:17 C 15 22 52.23 -05 53 18.6 L W91
2010-07-29 02:23:54 C 15 22 51.62 -05 53 16.9 L W91
2010-07-29 02:30:36 C 15 22 51.00 -05 53 15.4 L W91
2010-08-03 20:20:37 S 15 11 13.53 -05 23 55.3 L C51
2010-08-03 23:31:08 S 15 10 58.56 -05 23 18.9 L C51
2010-08-04 02:41:39 S 15 10 43.66 -05 22 43.1 L C51
2010-08-04 04:16:49 S 15 10 36.26 -05 22 25.4 L C51
2010-08-04 05:52:10 S 15 10 28.80 -05 22 08.7 L C51
2010-08-04 07:27:20 S 15 10 21.46 -05 21 50.1 L C51
2010-08-04 10:37:51 S 15 10 06.71 -05 21 15.0 L C51
2010-08-04 13:48:22 S 15 09 51.98 -05 20 39.5 L C51
2010-08-28 09:20:06 C 14 34 26.03 -04 09 16.5 r E12
2011-03-08 11:51:41 C 14 56 07.39 -22 15 25.3 o 291
2011-03-08 11:57:42 C 14 56 07.13 -22 15 23.4 o 291
2011-03-08 12:03:30 C 14 56 06.98 -22 15 22.8 o 291
2012-05-19 08:45:21 C 15 33 55.77 -17 38 23.1 o 695
2012-05-19 08:48:02 C 15 33 55.59 -17 38 23.1 o 695
2012-05-19 08:50:43 C 15 33 55.48 -17 38 22.3 o 695
2012-05-20 08:32:53 C 15 32 42.65 -17 33 21.6 o 695
2012-05-20 08:36:35 C 15 32 42.47 -17 33 20.8 o 695
2012-05-20 09:06:27 C 15 32 40.88 -17 33 14.4 o 695
2012-05-20 09:10:09 C 15 32 40.76 -17 33 13.0 o 695
2012-05-20 09:13:50 C 15 32 40.52 -17 33 12.1 o 695
2013-05-05 10:00:40 C 21 48 17.33 -04 10 34.3 u 807
2013-05-05 10:05:02 C 21 48 18.09 -04 10 28.8 u 807
2013-05-05 10:09:24 C 21 48 18.86 -04 10 23.4 u 807
2013-05-05 10:13:46 C 21 48 19.61 -04 10 18.0 u 807
2013-05-05 10:18:08 C 21 48 20.37 -04 10 12.6 u 807
2013-05-14 18:32:43 C 22 33 23.81 +01 13 19.8 q E12
2013-05-14 18:53:47 C 22 33 28.60 +01 13 55.6 q E12
2014-04-23 05:52:05 C 14 34 57.85 -17 50 54.5 L W84
2014-04-23 05:56:41 C 14 34 57.58 -17 50 53.0 L W84
2014-04-23 06:01:17 C 14 34 57.32 -17 50 51.8 L W84
2014-04-23 06:05:50 C 14 34 57.06 -17 50 50.4 L W84
2014-04-23 06:10:22 C 14 34 56.80 -17 50 49.0 L W84
2014-04-24 06:23:28 C 14 33 35.02 -17 43 29.1 L W84
2014-04-24 06:28:03 C 14 33 34.76 -17 43 27.7 L W84
2014-04-24 06:32:36 C 14 33 34.49 -17 43 26.4 L W84