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
2005-11-26 02:38:38 C 02 22 53.32 +27 01 17.0 c 844
2005-11-26 04:24:48 C 02 22 43.39 +26 52 47.7 o G88
2005-11-26 04:37:11 C 02 22 41.59 +26 51 59.2 o G88
2005-11-26 04:41:39 C 02 22 40.57 +26 51 47.1 c 711
2005-11-26 04:46:23 C 02 22 39.63 +26 51 28.9 c 711
2005-11-26 04:49:30 C 02 22 39.76 +26 51 11.0 o G88
2005-11-26 04:51:16 C 02 22 39.08 +26 51 09.0 c 711
2005-11-26 17:11:00 C 02 21 08.83 +25 59 31.8 c A50
2005-11-26 17:12:26 C 02 21 08.66 +25 59 25.9 c A50
2005-11-26 17:13:51 C 02 21 08.44 +25 59 20.1 c A50
2005-11-26 17:15:17 C 02 21 08.28 +25 59 13.6 c A50
2005-11-26 17:16:31 C 02 21 08.10 +25 59 08.4 c A50
2005-11-26 18:55:03 C 02 20 55.23 +25 52 05.1 r 469
2005-11-26 19:04:37 C 02 20 53.78 +25 51 23.1 r 469
2005-11-26 19:14:40 C 02 20 52.36 +25 50 40.2 r 469
2005-11-27 01:19:51 C 02 20 01.67 +25 25 31.5 c 844
2005-11-27 01:21:12 C 02 20 01.63 +25 25 23.9 c 844
2005-11-27 01:24:16 C 02 20 01.03 +25 25 11.9 c 844
2005-11-27 01:30:52 C 02 19 59.97 +25 24 40.3 c 844
2005-11-27 01:38:57 C 02 19 58.65 +25 24 04.4 c 844
2005-11-27 01:41:55 C 02 19 58.18 +25 23 50.0 c 844
2005-11-27 01:43:29 C 02 19 57.96 +25 23 43.9 c 844
2005-11-27 01:45:04 C 02 19 57.67 +25 23 35.7 c 844
2005-11-27 01:46:33 C 02 19 57.43 +25 23 29.9 c 844
2005-11-27 01:48:25 C 02 19 57.10 +25 23 20.2 c 844
2005-11-27 04:35:47 C 02 19 35.86 +25 08 40.0 o G88
2005-11-27 04:47:47 C 02 19 33.90 +25 07 44.1 o G88
2005-11-27 05:02:24 C 02 19 31.49 +25 06 35.4 o G88
2005-11-27 17:42:38 C 02 17 47.63 +24 03 22.3 r 143
2005-11-27 17:45:35 C 02 17 47.17 +24 03 07.0 r 143
2005-11-28 02:59:14 C 02 16 23.92 +23 13 53.2 o G77
2005-11-28 03:31:39 C 02 16 18.15 +23 10 55.8 o G77
2005-11-28 03:50:00 C 02 16 14.89 +23 09 14.7 o G77
2005-11-28 04:15:48 C 02 16 10.21 +23 06 51.2 o G77
2005-11-28 04:40:27 C 02 16 05.70 +23 04 33.6 o G77
2005-11-29 04:44:56 C 02 12 03.86 +20 34 22.3 17.4 c 704
2005-11-29 05:03:30 C 02 11 59.94 +20 32 14.1 18.0 c 704
2005-11-29 05:22:06 C 02 11 56.02 +20 30 05.4 17.8 c 704
2005-11-29 05:40:39 C 02 11 52.11 +20 27 55.8 18.0 c 704
2005-12-01 04:38:09 C 02 02 01.99 +13 43 34.0 16.8 c 704
2005-12-01 04:56:43 C 02 01 56.69 +13 40 16.3 16.8 c 704
2005-12-01 05:15:25 C 02 01 51.33 +13 36 56.1 17.0 c 704
2005-12-01 05:33:56 C 02 01 46.07 +13 33 37.7 17.0 c 704
2005-12-01 05:52:37 C 02 01 40.74 +13 30 16.2 17.1 c 704
2005-12-01 18:44:43 C 01 58 25.11 +11 02 07.0 o 639
2005-12-01 18:51:20 C 01 58 23.14 +11 00 46.6 o 639
2005-12-01 18:54:19 C 01 58 22.20 +11 00 10.4 o 639
2005-12-01 18:57:19 C 01 58 21.30 +10 59 34.0 o 639
2005-12-01 19:01:10 C 01 58 20.12 +10 58 47.0 o 639
2005-12-01 19:10:05 C 01 58 17.38 +10 56 58.5 o 639
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)