267940 (2004 EM20)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5240095084 ± 7.55e-03
Semi-major axis (a)1.1053730634 AU ± 1.88e-03
Inclination (i)14.13713680° ± 6.01e-01
Long. of Asc. Node (Ω)343.74140747° ± 1.49e+00
Arg. of Perihelion (ω)314.92176498° ± 2.03e+00
Mean Anomaly (M)162.51381471° ± 1.67e+00
Mean Motion (n)0.8481037049°/day ± 2.17e-03
Perihelion dist (q)0.52614707 AU ± 8.39e-03
Aphelion dist (Q)1.68459906 AU ± 8.82e-03
Orbital Period1.16215302 yr ± 2.97e-03
NGA Modelr2
A2-2.74664471e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-29
RMS Residual0.339″
Uncertainty0
Orbit TypeApollo
MOID0.090441 AU
Observations Used286
Oppositions3
Arc Total2004-2025
First Observation Used2004-02-19
Last Observation Used2025-03-01
Observations (294)
Date Type RA Dec Mag Band Observatory
2011-02-25 02:56:44 C 11 54 05.17 +03 23 08.8 v 204
2011-02-25 03:13:17 C 11 54 03.20 +03 23 02.0 v 204
2011-02-25 10:26:39 C 11 53 13.27 +03 19 55.2 r 703
2011-02-25 10:49:48 C 11 53 10.35 +03 19 45.3 r 703
2011-02-25 11:01:31 C 11 53 08.98 +03 19 38.8 r 703
2011-02-28 23:02:04 C 11 41 58.58 +02 38 55.6 r J75
2011-02-28 23:19:11 C 11 41 55.94 +02 38 46.5 r J75
2011-02-28 23:36:17 C 11 41 53.25 +02 38 37.4 r J75
2011-03-04 23:10:29 C 11 25 12.98 +01 42 10.2 u A13
2011-03-04 23:38:01 C 11 25 07.36 +01 41 52.0 u A13
2011-03-05 08:55:06 C 11 23 13.92 +01 35 46.7 r G96
2011-03-05 09:08:32 C 11 23 11.04 +01 35 37.8 r G96
2011-03-05 09:22:05 C 11 23 08.16 +01 35 28.6 r G96
2011-03-06 05:03:33 C 11 19 00.84 +01 21 52.0 o 691
2011-03-06 05:29:01 C 11 18 55.15 +01 21 33.9 o 691
2011-03-06 05:54:29 C 11 18 49.43 +01 21 16.0 o 691
2011-03-08 22:37:03 C 11 03 25.10 +00 31 21.5 c A48
2011-03-08 22:40:13 C 11 03 24.23 +00 31 19.0 c A48
2011-03-08 22:43:22 C 11 03 23.40 +00 31 16.3 c A48
2011-03-08 22:46:31 C 11 03 22.54 +00 31 13.9 c A48
2011-03-09 01:45:33 C 11 02 34.63 +00 28 44.6 c A24
2011-03-09 01:46:35 C 11 02 34.37 +00 28 42.6 c A24
2011-03-09 02:10:40 C 11 02 27.92 +00 28 22.9 c A24
2011-03-09 02:35:27 C 11 02 21.34 +00 28 01.9 c A24
2011-03-10 10:06:01 C 10 53 45.914 +00 00 43.73 L F51
2011-03-10 10:40:28 C 10 53 35.718 +00 00 12.46 L F51
2011-03-10 10:57:02 C 10 53 30.831 -00 00 02.50 L F51
2011-03-11 03:32:55 C 10 48 42.84 -00 15 33.9 o 691
2011-03-11 03:58:24 C 10 48 35.10 -00 15 57.9 o 691
2011-03-11 04:28:50 C 10 48 25.73 -00 16 27.2 o 691
2011-03-11 07:46:23 C 10 47 24.57 -00 19 33.6 r 703
2011-03-11 07:54:39 C 10 47 22.02 -00 19 42.2 r 703
2011-03-11 08:03:02 C 10 47 19.39 -00 19 50.5 r 703
2011-03-11 08:11:24 C 10 47 16.83 -00 19 58.6 r 703
2011-03-12 07:50:01 C 10 39 55.87 -00 43 17.6 u H45
2011-03-12 07:52:25 C 10 39 55.13 -00 43 20.0 u H45
2011-03-12 07:54:31 C 10 39 54.44 -00 43 22.0 u H45
2011-03-12 07:56:03 C 10 39 53.93 -00 43 23.3 u H45
2011-03-12 07:57:58 C 10 39 53.27 -00 43 25.4 u H45
2011-03-22 20:10:27 C 08 54 03.32 -06 02 14.9 c A24
2011-03-22 20:11:30 C 08 54 02.84 -06 02 16.4 c A24
2011-03-22 21:25:38 C 08 53 24.35 -06 03 59.3 c A24
2018-03-06 08:14:12 C 13 10 34.62 -19 28 03.7 o 691
2018-03-06 08:19:25 C 13 10 34.50 -19 28 22.2 o 691
2018-03-06 08:24:38 C 13 10 34.35 -19 28 40.7 o 691
2018-03-07 04:17:33 C 13 10 16.35 -20 40 58.3 U W87
2018-03-07 04:21:28 C 13 10 16.26 -20 41 13.3 U W87
2018-03-07 04:25:22 C 13 10 16.15 -20 41 28.3 U W87
2018-03-07 04:29:17 C 13 10 16.02 -20 41 43.5 U W87
2018-03-07 04:37:06 C 13 10 15.83 -20 42 13.5 U W87