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
2009-12-10 16:12:06 C 00 15 21.42 +27 47 45.0 17.8 o C20
2009-12-10 16:12:23 C 00 15 21.53 +27 47 43.0 17.9 o C20
2009-12-10 16:12:38 C 00 15 21.64 +27 47 41.0 17.9 o C20
2009-12-10 16:14:36 C 00 15 22.33 +27 47 26.2 17.6 o C20
2009-12-10 16:14:52 C 00 15 22.52 +27 47 24.1 17.7 o C20
2009-12-10 16:15:08 C 00 15 22.61 +27 47 22.3 18.0 o C20
2009-12-10 16:15:23 C 00 15 22.73 +27 47 20.4 18.1 o C20
2009-12-10 16:15:39 C 00 15 22.82 +27 47 18.4 17.7 o C20
2009-12-10 16:15:55 C 00 15 22.93 +27 47 16.5 18.0 o C20
2009-12-10 16:16:10 C 00 15 23.03 +27 47 14.6 17.7 o C20
2009-12-10 16:16:26 C 00 15 23.12 +27 47 12.6 18.0 o C20
2009-12-10 16:16:41 C 00 15 23.23 +27 47 10.7 18.1 o C20
2009-12-10 16:18:31 C 00 15 23.96 +27 46 56.9 17.7 o C20
2009-12-10 16:18:46 C 00 15 24.05 +27 46 55.0 18.0 o C20
2009-12-10 16:19:03 C 00 15 24.17 +27 46 53.0 17.6 o C20
2009-12-10 16:19:18 C 00 15 24.28 +27 46 51.0 17.8 o C20
2009-12-10 16:19:34 C 00 15 24.37 +27 46 49.1 17.6 o C20
2009-12-10 16:19:50 C 00 15 24.47 +27 46 47.0 17.7 o C20
2009-12-10 16:20:06 C 00 15 24.57 +27 46 45.2 17.6 o C20
2009-12-10 16:20:21 C 00 15 24.69 +27 46 43.1 18.0 o C20
2009-12-10 16:20:37 C 00 15 24.78 +27 46 41.2 18.0 o C20
2009-12-10 16:20:53 C 00 15 24.90 +27 46 39.3 17.9 o C20
2009-12-10 16:21:09 C 00 15 25.00 +27 46 37.2 18.1 o C20
2009-12-10 16:21:25 C 00 15 25.10 +27 46 35.3 17.9 o C20
2009-12-10 16:21:40 C 00 15 25.21 +27 46 33.4 17.8 o C20
2009-12-10 16:21:56 C 00 15 25.31 +27 46 31.4 18.0 o C20
2009-12-10 16:22:11 C 00 15 25.40 +27 46 29.5 18.0 o C20
2009-12-10 16:22:28 C 00 15 25.52 +27 46 27.3 18.0 o C20
2009-12-10 16:22:43 C 00 15 25.62 +27 46 25.4 18.0 o C20
2009-12-10 16:22:59 C 00 15 25.71 +27 46 23.6 17.8 o C20
2009-12-10 16:23:13 C 00 15 25.82 +27 46 21.7 17.7 o C20
2009-12-10 16:23:29 C 00 15 25.92 +27 46 19.7 18.0 o C20
2009-12-10 16:23:45 C 00 15 26.03 +27 46 17.8 18.1 o C20
2009-12-10 16:24:00 C 00 15 26.13 +27 46 15.9 17.7 o C20
2009-12-10 16:24:16 C 00 15 26.22 +27 46 14.0 17.8 o C20
2009-12-10 16:24:30 C 00 15 26.32 +27 46 12.0 18.0 o C20
2009-12-10 16:24:46 C 00 15 26.43 +27 46 10.2 18.0 o C20
2009-12-10 16:25:02 C 00 15 26.53 +27 46 08.2 18.0 o C20
2009-12-10 16:25:17 C 00 15 26.63 +27 46 06.3 18.0 o C20
2009-12-10 16:25:33 C 00 15 26.74 +27 46 04.2 17.9 o C20
2009-12-10 16:25:49 C 00 15 26.85 +27 46 02.4 17.9 o C20
2009-12-10 16:26:04 C 00 15 26.95 +27 46 00.3 17.7 o C20
2009-12-10 16:26:20 C 00 15 27.05 +27 45 58.3 17.9 o C20
2009-12-10 16:26:36 C 00 15 27.15 +27 45 56.3 18.1 o C20
2009-12-10 16:26:52 C 00 15 27.27 +27 45 54.4 17.8 o C20
2009-12-10 16:27:08 C 00 15 27.36 +27 45 52.4 18.0 o C20
2009-12-10 16:27:24 C 00 15 27.47 +27 45 50.4 17.9 o C20
2009-12-10 16:28:41 C 00 15 27.96 +27 45 40.9 18.0 o C20
2009-12-10 16:30:53 C 00 15 28.83 +27 45 24.3 17.9 o C20
2009-12-10 16:34:26 C 00 15 30.25 +27 44 57.7 17.1 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)