2011 ET4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3014974680 ± 1.14e-07
Semi-major axis (a)1.6318418056 AU ± 7.96e-08
Inclination (i)31.76210626° ± 1.92e-05
Long. of Asc. Node (Ω)347.61265685° ± 3.15e-06
Arg. of Perihelion (ω)149.52257034° ± 6.45e-05
Mean Anomaly (M)35.90281191° ± 2.16e-04
Mean Motion (n)0.4728192978°/day ± 3.46e-08
Perihelion dist (q)1.13984563 AU ± 1.95e-07
Aphelion dist (Q)2.12383798 AU ± 2.13e-07
Orbital Period2.08457288 yr ± 1.52e-07
Physical Parameters
H (abs. magnitude)20.87
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.245″
Uncertainty0
Orbit TypeAmor
MOID0.180742 AU
Observations Used106
Oppositions4
Arc Total2011-2018
First Observation Used2011-03-02
Last Observation Used2018-09-11
Observations (123)
Date Type RA Dec Mag Band Observatory
2011-03-02 07:13:43 C 12 14 32.17 +15 52 47.3 r 703
2011-03-02 07:31:41 C 12 14 26.37 +15 51 05.5 r 703
2011-03-02 07:49:42 C 12 14 20.54 +15 49 23.1 r 703
2011-03-02 08:07:48 C 12 14 14.67 +15 47 40.4 r 703
2011-03-02 08:34:49 C 12 14 04.96 +15 45 00.4 o H21
2011-03-02 08:44:08 C 12 14 02.01 +15 44 06.5 o H21
2011-03-02 08:53:29 C 12 13 58.91 +15 43 13.9 o H21
2011-03-02 09:03:37 C 12 13 55.66 +15 42 16.4 o H21
2011-03-02 09:18:49 C 12 13 50.76 +15 40 48.9 r H21
2011-03-02 09:20:07 C 12 13 51.27 +15 40 48.2 r 703
2011-03-02 09:20:58 C 12 13 50.98 +15 40 43.6 r 703
2011-03-02 09:21:48 C 12 13 50.70 +15 40 39.0 r 703
2011-03-02 09:22:04 C 12 13 49.72 +15 40 30.4 r H21
2011-03-02 09:22:38 C 12 13 50.41 +15 40 34.2 r 703
2011-03-02 09:25:14 C 12 13 48.69 +15 40 12.1 r H21
2011-03-02 09:28:09 C 12 13 47.78 +15 39 55.1 r H21
2011-03-02 09:31:39 C 12 13 46.62 +15 39 35.3 r H21
2011-03-02 10:30:48 C 12 13 28.21 +15 34 04.6 r H10
2011-03-02 10:33:39 C 12 13 27.39 +15 33 48.8 r H10
2011-03-02 10:36:31 C 12 13 26.30 +15 33 31.3 r H10
2011-03-02 11:04:54 C 12 13 17.18 +15 30 49.2 r H10
2011-03-02 11:07:47 C 12 13 16.52 +15 30 36.0 r H10
2011-03-02 11:10:40 C 12 13 15.27 +15 30 15.8 r H10
2011-03-02 12:39:03 C 12 12 47.13 +15 21 48.4 o 291
2011-03-02 12:45:03 C 12 12 45.25 +15 21 13.6 o 291
2011-03-02 12:51:02 C 12 12 43.32 +15 20 39.6 o 291
2011-03-02 17:01:54 C 12 11 28.82 +14 56 34.5 c C42
2011-03-02 17:05:52 C 12 11 27.56 +14 56 11.9 c C42
2011-03-02 17:09:48 C 12 11 26.30 +14 55 49.8 c C42
2011-03-02 19:11:46 C 12 10 45.09 +14 44 13.6 o 300
2011-03-02 19:14:09 C 12 10 44.28 +14 43 59.7 o 300
2011-03-02 19:16:32 C 12 10 43.49 +14 43 45.5 o 300
2011-03-02 19:18:55 C 12 10 42.74 +14 43 32.2 o 300
2011-03-02 20:06:23 C 12 10 31.65 +14 38 45.2 r A17
2011-03-02 20:09:45 C 12 10 30.56 +14 38 25.2 r A17
2011-03-02 20:13:08 C 12 10 29.52 +14 38 05.7 r A17
2011-03-02 21:11:31 C 12 10 10.89 +14 32 30.3 r 113
2011-03-02 21:12:42 C 12 10 10.51 +14 32 23.6 r 113
2011-03-02 21:13:52 C 12 10 10.14 +14 32 16.9 r 113
2011-03-02 21:15:02 C 12 10 09.76 +14 32 10.0 r 113
2011-03-02 21:58:07 C 12 09 56.21 +14 28 03.4 u 198
2011-03-02 21:59:34 C 12 09 55.74 +14 27 55.1 u 198
2011-03-02 22:03:20 C 12 09 54.55 +14 27 33.6 u 198
2011-03-02 22:50:06 C 12 09 39.98 +14 23 08.0 v 586
2011-03-02 22:51:18 C 12 09 39.56 +14 23 00.4 v 586
2011-03-02 22:54:45 C 12 09 38.48 +14 22 40.6 v 586
2011-03-02 22:55:01 C 12 09 38.38 +14 22 38.8 v 586
2011-03-02 22:55:18 C 12 09 38.29 +14 22 37.3 v 586
2011-03-02 22:55:36 C 12 09 38.20 +14 22 35.6 v 586
2011-03-02 22:55:52 C 12 09 38.11 +14 22 33.9 v 586