2005 WA1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5837099691 ± 5.35e-08
Semi-major axis (a)2.0087419130 AU ± 8.41e-09
Inclination (i)10.90777158° ± 1.01e-05
Long. of Asc. Node (Ω)246.85033268° ± 4.27e-06
Arg. of Perihelion (ω)242.12313883° ± 1.71e-05
Mean Anomaly (M)352.28575781° ± 1.85e-05
Mean Motion (n)0.3461992033°/day ± 2.17e-09
Perihelion dist (q)0.83621923 AU ± 1.07e-07
Aphelion dist (Q)3.18126459 AU ± 1.08e-07
Orbital Period2.84699177 yr ± 1.79e-08
Physical Parameters
H (abs. magnitude)21.72
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.386″
Uncertainty0
Orbit TypeApollo
MOID0.023327 AU
Observations Used120
Radar Obs Used4
Oppositions1
Arc Total2005-2023
First Observation Used2005-11-12
Last Observation Used2023-05-18
Observations (131)
Date Type RA Dec Mag Band Observatory
2005-11-12 06:40:41 C 02 46 29.17 +36 19 40.2 r 703
2005-11-12 06:52:39 C 02 46 28.48 +36 19 32.4 r 703
2005-11-12 07:04:44 C 02 46 27.80 +36 19 24.1 r 703
2005-11-12 07:16:57 C 02 46 27.12 +36 19 18.0 r 703
2005-11-21 04:39:10 C 02 34 14.84 +32 21 28.9 r 703
2005-11-21 04:53:19 C 02 34 13.47 +32 21 03.1 r 703
2005-11-21 05:07:22 C 02 34 12.14 +32 20 37.2 r 703
2005-11-21 05:21:14 C 02 34 10.77 +32 20 11.7 r 703
2005-11-21 06:38:21 C 02 34 03.44 +32 17 45.9 r 703
2005-11-21 06:39:36 C 02 34 03.10 +32 17 42.8 r 703
2005-11-21 06:40:52 C 02 34 03.09 +32 17 40.4 r 703
2005-11-21 06:42:08 C 02 34 03.01 +32 17 38.6 r 703
2005-11-21 20:26:31 C 02 32 59.93 +31 50 17.3 c 565
2005-11-21 20:31:41 C 02 32 59.55 +31 50 06.8 c 565
2005-11-21 20:39:57 C 02 32 58.72 +31 49 50.1 c 565
2005-11-22 04:25:01 C 02 32 19.90 +31 33 41.9 r 734
2005-11-22 04:27:08 C 02 32 19.69 +31 33 37.3 r 734
2005-11-22 04:29:15 C 02 32 19.50 +31 33 34.1 r 734
2005-11-22 04:31:22 C 02 32 19.23 +31 33 28.2 r 734
2005-11-22 04:33:29 C 02 32 19.09 +31 33 24.9 r 734
2005-11-22 04:36:52 C 02 32 19.89 +31 33 24.5 c 651
2005-11-22 04:38:28 C 02 32 19.77 +31 33 21.2 c 651
2005-11-22 04:40:05 C 02 32 19.56 +31 33 17.8 c 651
2005-11-22 05:26:55 C 02 32 15.26 +31 31 34.2 c 673
2005-11-22 05:33:55 C 02 32 14.53 +31 31 19.4 c 673
2005-11-22 05:39:45 C 02 32 13.93 +31 31 06.8 c 673
2005-11-22 05:47:15 C 02 32 13.16 +31 30 50.8 c 673
2005-11-22 06:05:57 C 02 32 10.70 +31 30 05.2 c 682
2005-11-22 06:39:11 C 02 32 07.21 +31 28 50.4 c 682
2005-11-22 07:12:26 C 02 32 03.98 +31 27 41.1 c 682
2005-11-23 06:19:41 C 02 30 03.32 +30 33 37.3 c 682
2005-11-23 06:52:57 C 02 29 59.62 +30 32 13.0 c 682
2005-11-23 07:26:13 C 02 29 55.92 +30 30 47.6 c 682
2005-11-24 19:39:16 C 02 26 26.97 +28 48 06.0 r J95
2005-11-24 19:45:28 C 02 26 26.23 +28 47 46.7 r J95
2005-11-24 19:51:50 C 02 26 25.46 +28 47 27.0 r J95
2005-11-25 17:39:43 C 02 24 02.26 +27 33 07.2 o 151
2005-11-25 17:40:49 C 02 24 02.13 +27 33 03.5 o 151
2005-11-25 17:41:54 C 02 24 02.01 +27 32 59.7 o 151
2005-11-25 17:47:40 C 02 24 01.26 +27 32 38.9 o 151
2005-11-25 17:50:34 C 02 24 00.87 +27 32 28.2 o 151
2005-11-26 02:22:32 C 02 22 55.55 +27 02 21.2 c 844
2005-11-26 02:24:45 C 02 22 55.43 +27 02 11.0 c 844
2005-11-26 02:26:27 C 02 22 55.31 +27 02 07.6 c 844
2005-11-26 02:29:30 C 02 22 54.78 +27 01 52.5 c 844
2005-11-26 02:31:14 C 02 22 54.40 +27 01 45.3 c 844
2005-11-26 02:32:53 C 02 22 54.25 +27 01 40.5 c 844
2005-11-26 02:34:41 C 02 22 53.90 +27 01 33.1 c 844
2005-11-26 02:35:37 C 02 22 53.83 +27 01 28.7 c 844
2005-11-26 02:37:18 C 02 22 53.54 +27 01 23.2 c 844
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2005-12-01 01:53:00 183319.5448 3 Hz 2380 -1 -1
2005-12-01 02:06:00 182841.1824 0.25 Hz 2380 -1 -1
2005-12-02 01:43:00 171870.6759 0.3 Hz 2380 -1 -1
2005-12-02 02:00:00 51490875.42 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)