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
2005-12-01 19:33:45 C 01 58 10.97 +10 52 18.8 r 143
2005-12-01 19:36:40 C 01 58 10.08 +10 51 42.6 r 143
2005-12-01 19:39:14 C 01 58 09.29 +10 51 11.3 r 143
2005-12-02 03:15:50 C 01 55 59.65 +09 14 22.4 16.8 c 704
2005-12-02 03:34:10 C 01 55 53.49 +09 10 18.6 16.9 c 704
2005-12-02 03:52:37 C 01 55 47.28 +09 06 12.3 16.9 c 704
2005-12-02 04:11:09 C 01 55 41.01 +09 02 04.5 16.7 c 704
2005-12-02 04:29:28 C 01 55 34.79 +08 57 57.8 16.8 c 704
2005-12-03 04:26:44 C 01 47 39.63 +02 52 52.6 17.0 c 704
2005-12-03 04:45:29 C 01 47 31.85 +02 47 29.5 17.4 c 704
2005-12-03 05:04:28 C 01 47 23.96 +02 42 02.0 17.2 c 704
2005-12-03 05:41:22 C 01 47 04.74 +02 30 56.4 o 294
2005-12-03 12:09:06 C 01 44 43.02 +00 34 55.0 m 355
2005-12-03 12:12:03 C 01 44 41.71 +00 34 00.9 m 355
2005-12-03 12:14:29 C 01 44 40.64 +00 33 15.0 m 355
2005-12-03 12:18:29 C 01 44 38.77 +00 32 00.6 m 355
2005-12-04 00:10:19 C 01 39 46.05 -03 23 07.5 o 294
2005-12-04 00:17:43 C 01 39 42.31 -03 25 44.2 o 294
2005-12-04 00:19:51 C 01 39 41.31 -03 26 27.5 o 294
2006-05-25 09:23:16 C 16 15 10.82 -22 29 30.7 c 568
2006-05-25 10:16:24 C 16 15 06.51 -22 28 58.5 c 568
2006-05-26 10:58:05 C 16 13 12.71 -22 13 52.4 c 568
2019-09-26 06:25:58 C 22 58 29.213 +13 45 14.06 V T12
2019-09-26 07:31:46 C 22 58 25.179 +13 44 44.50 V T12
2019-09-27 09:07:37 C 22 56 53.612 +13 32 59.82 V T12
2023-04-25 09:35:57 C 14 47 14.355 -38 09 38.54 X F52
2023-04-25 09:59:36 C 14 47 12.194 -38 08 47.90 X F52
2023-04-25 10:11:28 C 14 47 11.093 -38 08 22.69 X F52
2023-05-18 08:27:30 C 14 21 32.736 -23 11 09.06 X F52
2023-05-18 08:43:59 C 14 21 32.365 -23 10 50.37 X F52
2023-05-18 09:17:01 C 14 21 31.635 -23 10 13.87 X F52
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)