2011 WD39

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5410762020 ± 4.74e-07
Semi-major axis (a)1.3020326339 AU ± 2.02e-08
Inclination (i)59.49674092° ± 5.16e-05
Long. of Asc. Node (Ω)240.89159006° ± 5.93e-06
Arg. of Perihelion (ω)349.25994157° ± 6.45e-05
Mean Anomaly (M)354.28783319° ± 1.23e-04
Mean Motion (n)0.6634061175°/day ± 1.54e-08
Perihelion dist (q)0.59753376 AU ± 6.17e-07
Aphelion dist (Q)2.00653151 AU ± 6.18e-07
Orbital Period1.48570575 yr ± 3.45e-08
Physical Parameters
H (abs. magnitude)19.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.303″
Uncertainty0
Orbit TypeApollo
MOID0.411153 AU
Observations Used89
Oppositions4
Arc Total2011-2023
First Observation Used2011-11-23
Last Observation Used2023-12-07
Observations (97)
Date Type RA Dec Mag Band Observatory
2012-01-14 03:43:24 C 02 25 30.55 +01 34 04.8 o 291
2012-12-07 02:05:59 C 21 39 49.85 +39 21 45.2 o 291
2012-12-07 02:21:46 C 21 39 52.30 +39 21 30.5 o 291
2014-10-21 14:28:50 C 05 13 54.419 +33 54 38.97 t 568
2014-10-21 14:32:31 C 05 13 54.186 +33 54 36.66 t 568
2014-10-22 12:39:18 C 05 12 31.262 +33 40 46.13 t 568
2014-10-22 12:42:59 C 05 12 31.026 +33 40 43.78 t 568
2014-10-23 09:18:00 C 05 11 10.37 +33 27 24.9 u H21
2014-10-23 09:37:09 C 05 11 09.03 +33 27 12.2 u H21
2014-10-23 09:56:54 C 05 11 07.68 +33 26 59.4 u H21
2014-11-17 08:16:39 C 04 13 09.372 +23 37 22.18 L F51
2014-11-17 08:35:18 C 04 13 07.139 +23 36 57.86 L F51
2014-11-17 08:53:50 C 04 13 04.917 +23 36 33.41 L F51
2014-11-17 09:12:20 C 04 13 02.670 +23 36 09.02 L F51
2017-11-15 08:56:07 C 04 32 29.09 +20 39 05.0 U I52
2017-11-15 09:27:00 C 04 32 25.53 +20 38 24.7 U I52
2017-11-15 09:34:21 C 04 32 24.68 +20 38 15.1 U I52
2017-11-15 09:39:18 C 04 32 24.11 +20 38 08.3 U I52
2017-11-21 08:45:23 C 04 15 47.266 +17 21 20.39 L F51
2017-11-21 09:04:07 C 04 15 45.009 +17 20 53.64 L F51
2017-11-21 09:41:57 C 04 15 40.449 +17 19 59.90 L F51
2017-11-26 07:06:44 C 04 01 44.44 +14 29 01.2 U G96
2017-11-26 07:14:10 C 04 01 43.50 +14 28 50.0 U G96
2017-11-26 07:28:32 C 04 01 41.81 +14 28 28.9 U G96
2017-12-11 08:47:18 C 03 22 11.095 +05 53 24.49 U F51
2017-12-11 09:02:53 C 03 22 09.571 +05 53 04.07 U F51
2017-12-11 09:18:21 C 03 22 08.065 +05 52 43.98 U F51
2020-11-11 08:18:16 C 04 56 31.28 +18 35 46.6 V G96
2020-11-11 08:25:38 C 04 56 30.52 +18 35 37.5 V G96
2020-11-11 08:33:00 C 04 56 29.73 +18 35 28.0 V G96
2020-12-08 08:29:02 C 03 42 27.335 +02 59 03.65 U F51
2020-12-08 08:45:09 C 03 42 25.542 +02 58 41.49 U F51
2020-12-08 09:01:18 C 03 42 23.744 +02 58 19.24 U F51
2020-12-08 09:17:31 C 03 42 21.935 +02 57 56.82 U F51
2020-12-21 03:45:59 C 03 13 08.23 -03 11 08.0 V G96
2020-12-21 03:54:04 C 03 13 07.58 -03 11 16.5 V G96
2020-12-21 04:02:09 C 03 13 06.94 -03 11 24.8 V G96
2021-01-05 06:50:36 C 02 51 18.966 -07 55 34.95 U F51
2021-01-05 07:08:35 C 02 51 18.195 -07 55 45.31 U F51
2021-01-05 07:26:20 C 02 51 17.424 -07 55 55.49 U F51
2023-12-06 08:35:08 C 04 04 11.715 -00 12 59.20 X F51
2023-12-06 09:16:08 C 04 04 06.719 -00 14 00.09 X F51
2023-12-06 09:35:09 C 04 04 04.402 -00 14 27.96 X F51
2023-12-07 06:21:13 C 04 01 36.404 -00 45 01.55 V G96
2023-12-07 06:29:22 C 04 01 35.396 -00 45 14.04 V G96
2023-12-07 06:37:31 C 04 01 34.435 -00 45 26.28 V G96
2023-12-07 06:45:40 C 04 01 33.416 -00 45 36.32 V G96