490581 (2009 WZ104)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1926243223 ± 1.36e-08
Semi-major axis (a)0.8555029198 AU ± 6.35e-10
Inclination (i)9.83505361° ± 3.00e-06
Long. of Asc. Node (Ω)263.23456055° ± 1.53e-06
Arg. of Perihelion (ω)10.58758027° ± 5.15e-06
Mean Anomaly (M)209.78436838° ± 1.20e-05
Mean Motion (n)1.2456041084°/day ± 1.39e-09
Perihelion dist (q)0.69071225 AU ± 1.16e-08
Aphelion dist (Q)1.02029359 AU ± 1.16e-08
Orbital Period0.79128374 yr ± 8.81e-10
Physical Parameters
H (abs. magnitude)20.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.161″
Uncertainty0
Orbit TypeAten
MOID0.029560 AU
Observations Used1094
Oppositions2
Arc Total2005-2025
First Observation Used2005-11-19
Last Observation Used2025-01-31
Observations (1208)
Date Type RA Dec Mag Band Observatory
2009-12-09 18:03:31 C 00 05 17.73 +30 36 16.4 o 151
2009-12-09 18:03:37 C 00 05 12.62 +30 36 17.6 15.8 o C20
2009-12-09 18:04:37 C 00 05 18.21 +30 36 08.0 o 151
2009-12-09 18:05:43 C 00 05 18.69 +30 35 59.7 o 151
2009-12-09 18:07:33 C 00 05 14.36 +30 35 46.3 16.9 o C20
2009-12-09 18:08:40 C 00 05 14.85 +30 35 38.0 16.8 o C20
2009-12-09 18:09:45 C 00 05 15.32 +30 35 29.6 16.7 o C20
2009-12-09 18:10:51 C 00 05 15.80 +30 35 20.6 16.7 o C20
2009-12-09 18:11:57 C 00 05 16.30 +30 35 12.1 16.9 o C20
2009-12-09 18:13:17 C 00 05 16.89 +30 35 01.5 15.1 o C20
2009-12-09 18:15:28 C 00 05 17.88 +30 34 44.3 15.2 o C20
2009-12-09 18:16:34 C 00 05 18.35 +30 34 35.6 15.1 o C20
2009-12-09 18:17:40 C 00 05 18.85 +30 34 26.9 15.1 o C20
2009-12-09 18:19:28 C 00 05 19.65 +30 34 12.7 15.1 o C20
2009-12-09 18:20:33 C 00 05 20.14 +30 34 04.0 15.1 o C20
2009-12-09 18:21:38 C 00 05 20.61 +30 33 55.6 15.0 o C20
2009-12-09 18:22:44 C 00 05 21.11 +30 33 46.8 15.0 o C20
2009-12-09 18:24:57 C 00 05 22.04 +30 33 30.1 14.8 o C20
2009-12-09 18:26:03 C 00 05 22.58 +30 33 20.6 15.0 o C20
2009-12-09 18:40:58 C 00 05 36.24 +30 31 44.7 r J27
2009-12-09 18:44:49 C 00 05 37.92 +30 31 15.4 r J27
2009-12-09 18:44:53 C 00 05 35.61 +30 31 01.5 v 434
2009-12-09 18:46:37 C 00 05 36.29 +30 30 48.6 v 434
2009-12-09 18:48:22 C 00 05 37.11 +30 30 34.6 v 434
2009-12-09 18:49:44 C 00 05 37.71 +30 30 24.0 v 434
2009-12-09 18:52:25 C 00 05 41.22 +30 30 16.8 r J27
2009-12-09 19:39:19 C 00 05 59.36 +30 24 00.4 w 160
2009-12-09 19:40:24 C 00 05 59.84 +30 23 51.8 w 160
2009-12-09 19:41:31 C 00 06 00.31 +30 23 43.1 w 160
2009-12-09 19:42:37 C 00 06 00.80 +30 23 34.5 w 160
2009-12-09 19:43:44 C 00 06 01.31 +30 23 25.7 w 160
2009-12-09 21:43:02 C 00 06 54.19 +30 07 42.3 c 560
2009-12-09 21:44:01 C 00 06 54.63 +30 07 34.6 c 560
2009-12-09 21:45:00 C 00 06 55.06 +30 07 27.0 c 560
2009-12-10 03:04:07 C 00 09 27.54 +29 27 29.9 17.1 c 704
2009-12-10 03:22:19 C 00 09 35.10 +29 25 09.1 17.2 c 704
2009-12-10 03:40:33 C 00 09 42.72 +29 22 47.7 17.5 c 704
2009-12-10 03:58:52 C 00 09 50.42 +29 20 25.5 17.5 c 704
2009-12-10 04:17:17 C 00 09 58.18 +29 18 02.1 17.7 c 704
2009-12-10 14:26:21 C 00 14 39.36 +28 00 51.6 17.3 o C20
2009-12-10 14:28:35 C 00 14 40.26 +28 00 34.6 17.8 o C20
2009-12-10 14:29:42 C 00 14 40.71 +28 00 26.9 17.8 o C20
2009-12-10 15:25:25 C 00 15 02.94 +27 53 33.4 17.0 o C20
2009-12-10 15:26:32 C 00 15 03.37 +27 53 25.1 17.0 o C20
2009-12-10 15:27:39 C 00 15 03.82 +27 53 16.8 17.1 o C20
2009-12-10 15:36:07 C 00 15 07.20 +27 52 13.5 17.9 o C20
2009-12-10 15:38:19 C 00 15 08.07 +27 51 57.0 18.1 o C20
2009-12-10 15:39:25 C 00 15 08.49 +27 51 48.5 17.7 o C20
2009-12-10 15:40:45 C 00 15 09.02 +27 51 38.8 17.4 o C20
2009-12-10 15:41:50 C 00 15 09.44 +27 51 31.1 17.5 o C20
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-12-09 10:01:00 70505.0282 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)