549948 (2011 WL2)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2834152050 ± 9.27e-08
Semi-major axis (a)1.0775855510 AU ± 1.77e-09
Inclination (i)14.13113315° ± 5.36e-06
Long. of Asc. Node (Ω)212.90079715° ± 2.20e-05
Arg. of Perihelion (ω)88.87219654° ± 1.23e-05
Mean Anomaly (M)268.24637821° ± 3.66e-05
Mean Motion (n)0.8811191436°/day ± 2.17e-09
Perihelion dist (q)0.77218142 AU ± 9.99e-08
Aphelion dist (Q)1.38298968 AU ± 9.99e-08
Orbital Period1.11860727 yr ± 2.75e-09
Physical Parameters
H (abs. magnitude)20.84
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.299″
Uncertainty0
Orbit TypeApollo
MOID0.000687 AU
Observations Used273
Oppositions1
Arc Total2010-2021
First Observation Used2010-04-14
Last Observation Used2021-01-17
Observations (286)
Date Type RA Dec Mag Band Observatory
2011-12-04 04:55:08 C 03 14 18.22 -20 23 21.1 u 448
2011-12-07 03:26:11 C 03 12 44.18 -19 51 22.5 u 448
2011-12-07 03:59:17 C 03 12 43.35 -19 51 07.2 u 448
2011-12-07 04:32:24 C 03 12 42.48 -19 50 51.9 u 448
2011-12-11 03:43:48 C 03 11 29.87 -19 01 43.7 o H21
2011-12-11 03:59:36 C 03 11 29.63 -19 01 34.6 o H21
2011-12-11 04:14:28 C 03 11 29.43 -19 01 26.3 o H21
2011-12-13 04:05:34 C 03 11 13.79 -18 34 07.9 o 807
2011-12-13 04:15:56 C 03 11 13.69 -18 34 01.7 o 807
2011-12-13 04:26:33 C 03 11 13.58 -18 33 55.9 o 807
2011-12-14 04:06:27 C 03 11 10.97 -18 20 13.4 o 807
2011-12-14 04:15:01 C 03 11 10.93 -18 20 08.1 o 807
2011-12-14 04:23:57 C 03 11 10.85 -18 20 02.5 o 807
2011-12-14 04:32:54 C 03 11 10.80 -18 19 57.2 o 807
2011-12-23 03:18:26 C 03 12 55.03 -16 04 50.5 o 807
2011-12-23 03:40:01 C 03 12 55.29 -16 04 36.0 o 807
2011-12-23 03:57:56 C 03 12 55.48 -16 04 23.4 o 807
2011-12-25 03:08:40 C 03 13 47.56 -15 33 04.1 o 291
2011-12-25 03:14:52 C 03 13 47.67 -15 33 00.0 o 291
2011-12-25 03:21:03 C 03 13 47.75 -15 32 55.5 o 291
2011-12-27 03:13:26 C 03 14 48.86 -15 00 16.7 o 291
2011-12-27 03:19:08 C 03 14 49.00 -15 00 12.3 o 291
2011-12-27 03:24:47 C 03 14 49.08 -15 00 08.9 o 291
2011-12-28 02:34:09 C 03 15 22.16 -14 44 09.7 o 291
2011-12-28 02:40:53 C 03 15 22.28 -14 44 05.4 o 291
2011-12-28 02:47:34 C 03 15 22.44 -14 44 02.6 o 291
2011-12-29 06:02:57 C 03 16 02.84 -14 25 08.1 o 291
2011-12-29 06:08:40 C 03 16 02.96 -14 25 04.2 o 291
2011-12-29 06:14:20 C 03 16 03.07 -14 25 00.2 o 291
2011-12-30 03:55:21 C 03 16 38.60 -14 09 54.9 o 291
2011-12-30 03:58:51 C 03 16 38.67 -14 09 52.6 o 291
2011-12-30 04:02:21 C 03 16 38.74 -14 09 50.4 o 291
2011-12-31 02:57:56 C 03 17 17.81 -13 53 46.9 o 291
2011-12-31 03:02:07 C 03 17 17.89 -13 53 44.1 o 291
2011-12-31 03:06:18 C 03 17 18.00 -13 53 41.3 o 291
2012-01-01 01:16:02 C 03 17 57.28 -13 38 10.5 t H21
2012-01-01 01:28:16 C 03 17 57.64 -13 38 01.4 t H21
2012-01-01 04:39:50 C 03 18 02.97 -13 35 46.5 o 291
2012-01-01 04:43:47 C 03 18 03.09 -13 35 43.2 o 291
2012-01-01 04:47:42 C 03 18 03.19 -13 35 40.7 o 291
2012-01-02 03:32:12 C 03 18 45.85 -13 19 39.8 o 291
2012-01-02 03:37:24 C 03 18 45.94 -13 19 36.1 o 291
2012-01-02 03:42:34 C 03 18 46.12 -13 19 31.9 o 291
2012-01-03 02:50:34 C 03 19 31.22 -13 03 13.1 o 291
2012-01-03 03:00:44 C 03 19 31.46 -13 03 06.2 o 291
2012-01-05 04:19:50 C 03 21 12.51 -12 28 10.4 o 291
2012-01-05 04:25:25 C 03 21 12.76 -12 28 06.5 o 291
2012-01-05 04:30:59 C 03 21 12.95 -12 28 02.8 o 291
2012-01-18 03:19:21 C 03 34 32.74 -08 47 31.7 o 291
2012-01-18 03:24:33 C 03 34 32.99 -08 47 28.2 o 291