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
2009-12-11 15:24:34 C 00 24 56.77 +24 58 08.1 15.7 o C20
2009-12-11 15:25:00 C 00 24 56.93 +24 58 04.9 15.8 o C20
2009-12-11 15:25:26 C 00 24 57.09 +24 58 02.0 15.6 o C20
2009-12-11 15:25:52 C 00 24 57.25 +24 57 58.7 15.7 o C20
2009-12-11 15:26:18 C 00 24 57.39 +24 57 55.8 15.7 o C20
2009-12-11 15:26:44 C 00 24 57.55 +24 57 52.9 15.8 o C20
2009-12-11 15:27:10 C 00 24 57.70 +24 57 49.7 15.7 o C20
2009-12-11 15:27:36 C 00 24 57.85 +24 57 46.6 15.9 o C20
2009-12-11 15:28:02 C 00 24 58.01 +24 57 43.4 15.8 o C20
2009-12-11 15:29:46 C 00 24 58.63 +24 57 31.3 15.7 o C20
2009-12-11 15:30:13 C 00 24 58.78 +24 57 28.1 15.7 o C20
2009-12-11 15:30:39 C 00 24 58.94 +24 57 25.0 15.7 o C20
2009-12-11 15:31:05 C 00 24 59.09 +24 57 21.9 15.7 o C20
2009-12-11 15:31:31 C 00 24 59.25 +24 57 18.8 15.8 o C20
2009-12-11 15:31:57 C 00 24 59.40 +24 57 15.9 15.7 o C20
2009-12-11 15:32:23 C 00 24 59.55 +24 57 12.7 15.7 o C20
2009-12-11 15:32:49 C 00 24 59.71 +24 57 09.7 15.7 o C20
2009-12-11 15:33:14 C 00 24 59.87 +24 57 06.6 15.6 o C20
2009-12-11 15:33:40 C 00 25 00.01 +24 57 03.7 15.7 o C20
2009-12-11 15:34:06 C 00 25 00.17 +24 57 00.5 15.7 o C20
2009-12-11 15:34:32 C 00 25 00.31 +24 56 57.5 15.6 o C20
2009-12-11 15:34:58 C 00 25 00.47 +24 56 54.4 15.7 o C20
2009-12-11 15:36:02 C 00 25 00.86 +24 56 46.8 15.7 o C20
2009-12-11 15:36:28 C 00 25 01.01 +24 56 43.8 15.6 o C20
2009-12-11 15:36:54 C 00 25 01.17 +24 56 40.7 15.6 o C20
2009-12-11 15:37:20 C 00 25 01.32 +24 56 37.6 15.6 o C20
2009-12-11 15:37:46 C 00 25 01.47 +24 56 34.6 15.6 o C20
2009-12-11 15:38:13 C 00 25 01.63 +24 56 31.5 15.6 o C20
2009-12-11 15:38:38 C 00 25 01.78 +24 56 28.3 15.7 o C20
2009-12-11 15:39:04 C 00 25 01.93 +24 56 25.4 15.7 o C20
2009-12-11 15:39:29 C 00 25 02.10 +24 56 22.2 15.6 o C20
2009-12-11 15:39:55 C 00 25 02.25 +24 56 19.0 15.7 o C20
2009-12-11 15:40:22 C 00 25 02.40 +24 56 16.1 15.7 o C20
2009-12-11 15:40:48 C 00 25 02.56 +24 56 13.0 15.7 o C20
2009-12-11 15:42:07 C 00 25 03.01 +24 56 03.7 15.7 o C20
2009-12-11 15:42:33 C 00 25 03.17 +24 56 00.7 15.7 o C20
2009-12-11 15:42:59 C 00 25 03.32 +24 55 57.5 15.9 o C20
2009-12-11 15:43:24 C 00 25 03.48 +24 55 54.4 15.7 o C20
2009-12-11 15:43:51 C 00 25 03.64 +24 55 51.4 15.6 o C20
2009-12-11 15:44:17 C 00 25 03.80 +24 55 48.4 15.7 o C20
2009-12-11 15:44:43 C 00 25 03.95 +24 55 45.1 15.7 o C20
2009-12-11 15:45:09 C 00 25 04.10 +24 55 42.1 15.8 o C20
2009-12-11 15:45:36 C 00 25 04.26 +24 55 38.9 15.8 o C20
2009-12-11 15:46:02 C 00 25 04.41 +24 55 35.8 15.8 o C20
2009-12-11 15:46:28 C 00 25 04.56 +24 55 32.8 15.8 o C20
2009-12-11 15:46:54 C 00 25 04.73 +24 55 29.7 15.7 o C20
2009-12-11 15:47:20 C 00 25 04.88 +24 55 26.5 15.7 o C20
2009-12-11 15:47:46 C 00 25 05.02 +24 55 23.6 15.8 o C20
2009-12-11 15:48:12 C 00 25 05.18 +24 55 20.4 15.8 o C20
2009-12-11 15:48:38 C 00 25 05.33 +24 55 17.4 15.9 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)