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 17:27:51 C 00 04 56.76 +30 40 58.9 15.0 o C20
2009-12-09 17:28:58 C 00 04 57.25 +30 40 50.4 15.0 o C20
2009-12-09 17:37:22 C 00 05 00.99 +30 39 44.2 15.8 o C20
2009-12-09 17:37:39 C 00 05 01.10 +30 39 42.2 15.8 o C20
2009-12-09 17:37:55 C 00 05 01.24 +30 39 40.0 15.7 o C20
2009-12-09 17:38:11 C 00 05 01.35 +30 39 37.9 15.8 o C20
2009-12-09 17:38:27 C 00 05 01.47 +30 39 35.8 15.7 o C20
2009-12-09 17:38:43 C 00 05 01.58 +30 39 33.7 15.8 o C20
2009-12-09 17:38:59 C 00 05 01.70 +30 39 31.6 15.7 o C20
2009-12-09 17:39:14 C 00 05 01.81 +30 39 29.6 15.8 o C20
2009-12-09 17:39:31 C 00 05 01.93 +30 39 27.4 15.8 o C20
2009-12-09 17:39:46 C 00 05 02.06 +30 39 25.4 15.8 o C20
2009-12-09 17:40:03 C 00 05 02.17 +30 39 23.2 15.8 o C20
2009-12-09 17:40:18 C 00 05 02.29 +30 39 21.1 15.9 o C20
2009-12-09 17:40:35 C 00 05 02.41 +30 39 19.0 15.8 o C20
2009-12-09 17:40:50 C 00 05 02.53 +30 39 16.9 15.7 o C20
2009-12-09 17:41:06 C 00 05 02.63 +30 39 14.9 15.7 o C20
2009-12-09 17:41:21 C 00 05 02.75 +30 39 12.9 15.8 o C20
2009-12-09 17:41:37 C 00 05 02.87 +30 39 10.8 15.9 o C20
2009-12-09 17:41:53 C 00 05 02.98 +30 39 08.8 15.8 o C20
2009-12-09 17:42:09 C 00 05 03.10 +30 39 06.7 15.7 o C20
2009-12-09 17:42:25 C 00 05 03.21 +30 39 04.7 15.9 o C20
2009-12-09 17:42:40 C 00 05 03.33 +30 39 02.7 15.8 o C20
2009-12-09 17:42:56 C 00 05 03.45 +30 39 00.4 15.8 o C20
2009-12-09 17:43:12 C 00 05 03.56 +30 38 58.4 15.8 o C20
2009-12-09 17:43:28 C 00 05 03.69 +30 38 56.3 15.8 o C20
2009-12-09 17:43:44 C 00 05 03.80 +30 38 54.1 15.8 o C20
2009-12-09 17:44:00 C 00 05 03.93 +30 38 52.1 15.7 o C20
2009-12-09 17:44:16 C 00 05 04.03 +30 38 50.0 15.7 o C20
2009-12-09 17:44:32 C 00 05 04.15 +30 38 48.0 15.8 o C20
2009-12-09 17:44:47 C 00 05 04.27 +30 38 45.9 15.5 o C20
2009-12-09 17:45:03 C 00 05 04.39 +30 38 43.9 15.8 o C20
2009-12-09 17:45:18 C 00 05 04.50 +30 38 41.9 15.8 o C20
2009-12-09 17:45:34 C 00 05 04.61 +30 38 39.8 15.7 o C20
2009-12-09 17:45:49 C 00 05 04.73 +30 38 37.9 15.7 o C20
2009-12-09 17:46:06 C 00 05 04.85 +30 38 35.6 15.8 o C20
2009-12-09 17:46:21 C 00 05 04.96 +30 38 33.6 15.8 o C20
2009-12-09 17:46:37 C 00 05 05.08 +30 38 31.5 15.7 o C20
2009-12-09 17:46:53 C 00 05 05.20 +30 38 29.4 15.7 o C20
2009-12-09 17:47:09 C 00 05 05.32 +30 38 27.3 15.8 o C20
2009-12-09 17:47:24 C 00 05 05.44 +30 38 25.3 15.8 o C20
2009-12-09 17:47:41 C 00 05 05.55 +30 38 23.1 15.7 o C20
2009-12-09 17:47:57 C 00 05 05.66 +30 38 21.1 15.7 o C20
2009-12-09 17:48:13 C 00 05 05.79 +30 38 18.9 15.7 o C20
2009-12-09 17:48:29 C 00 05 05.91 +30 38 16.8 15.7 o C20
2009-12-09 17:48:46 C 00 05 06.03 +30 38 14.7 15.7 o C20
2009-12-09 17:49:02 C 00 05 06.15 +30 38 12.5 15.7 o C20
2009-12-09 17:49:18 C 00 05 06.27 +30 38 10.5 15.7 o C20
2009-12-09 17:49:34 C 00 05 06.39 +30 38 08.3 15.7 o C20
2009-12-09 17:49:50 C 00 05 06.50 +30 38 06.2 15.7 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)