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 15:49:04 C 00 25 05.50 +24 55 14.3 15.8 o C20
2009-12-11 15:49:30 C 00 25 05.65 +24 55 11.3 15.8 o C20
2009-12-11 15:49:56 C 00 25 05.81 +24 55 08.2 15.7 o C20
2009-12-11 15:50:22 C 00 25 05.96 +24 55 05.1 15.8 o C20
2009-12-11 15:50:48 C 00 25 06.12 +24 55 02.0 15.7 o C20
2009-12-11 15:51:14 C 00 25 06.26 +24 54 58.9 15.6 o C20
2009-12-11 15:52:58 C 00 25 06.89 +24 54 46.5 15.8 o C20
2009-12-11 15:53:24 C 00 25 07.04 +24 54 43.4 15.8 o C20
2009-12-11 15:53:50 C 00 25 07.19 +24 54 40.4 15.8 o C20
2009-12-11 15:54:16 C 00 25 07.35 +24 54 37.4 15.9 o C20
2009-12-11 15:54:42 C 00 25 07.50 +24 54 34.3 15.7 o C20
2009-12-11 15:55:08 C 00 25 07.65 +24 54 31.2 15.7 o C20
2009-12-11 15:55:34 C 00 25 07.80 +24 54 28.2 15.9 o C20
2009-12-11 15:56:00 C 00 25 07.95 +24 54 25.1 15.7 o C20
2009-12-11 15:56:26 C 00 25 08.11 +24 54 22.0 15.8 o C20
2009-12-11 15:56:51 C 00 25 08.27 +24 54 19.0 15.7 o C20
2009-12-11 15:57:16 C 00 25 08.41 +24 54 16.0 15.8 o C20
2009-12-11 15:57:50 C 00 25 08.61 +24 54 12.1 15.8 o C20
2009-12-11 15:58:16 C 00 25 08.77 +24 54 08.8 15.7 o C20
2009-12-11 15:58:42 C 00 25 08.91 +24 54 05.8 15.7 o C20
2009-12-11 15:59:08 C 00 25 09.07 +24 54 02.7 15.7 o C20
2009-12-11 15:59:35 C 00 25 09.23 +24 53 59.7 15.8 o C20
2009-12-11 16:00:01 C 00 25 09.38 +24 53 56.5 15.8 o C20
2009-12-11 16:00:27 C 00 25 09.54 +24 53 53.4 15.8 o C20
2009-12-11 16:00:52 C 00 25 09.69 +24 53 50.4 15.7 o C20
2009-12-11 16:01:18 C 00 25 09.85 +24 53 47.3 15.8 o C20
2009-12-11 16:01:44 C 00 25 10.00 +24 53 44.2 15.8 o C20
2009-12-11 16:02:10 C 00 25 10.15 +24 53 41.2 15.8 o C20
2009-12-11 16:02:36 C 00 25 10.30 +24 53 38.2 15.8 o C20
2009-12-11 16:03:01 C 00 25 10.45 +24 53 35.1 15.7 o C20
2009-12-11 16:03:27 C 00 25 10.61 +24 53 32.0 15.7 o C20
2009-12-11 16:03:53 C 00 25 10.75 +24 53 29.1 15.7 o C20
2009-12-11 16:04:18 C 00 25 10.91 +24 53 26.0 15.7 o C20
2009-12-11 16:04:44 C 00 25 11.06 +24 53 23.0 15.7 o C20
2009-12-11 16:05:10 C 00 25 11.22 +24 53 19.9 15.8 o C20
2009-12-11 16:05:35 C 00 25 11.36 +24 53 16.9 15.7 o C20
2009-12-11 16:06:01 C 00 25 11.51 +24 53 13.8 15.8 o C20
2009-12-11 16:06:27 C 00 25 11.67 +24 53 10.8 15.7 o C20
2009-12-11 16:06:52 C 00 25 11.81 +24 53 07.8 15.7 o C20
2009-12-11 16:07:18 C 00 25 11.97 +24 53 04.7 15.8 o C20
2009-12-11 16:07:43 C 00 25 12.12 +24 53 01.8 15.7 o C20
2009-12-11 16:08:09 C 00 25 12.27 +24 52 58.7 15.6 o C20
2009-12-11 16:08:35 C 00 25 12.42 +24 52 55.6 15.8 o C20
2009-12-11 16:09:00 C 00 25 12.57 +24 52 52.6 15.7 o C20
2009-12-11 16:09:26 C 00 25 12.73 +24 52 49.6 15.8 o C20
2009-12-11 16:09:52 C 00 25 12.88 +24 52 46.4 15.8 o C20
2009-12-11 16:10:18 C 00 25 13.04 +24 52 43.4 15.7 o C20
2009-12-11 16:10:43 C 00 25 13.18 +24 52 40.4 15.7 o C20
2009-12-11 16:11:09 C 00 25 13.33 +24 52 37.4 15.5 o C20
2009-12-11 16:11:34 C 00 25 13.48 +24 52 34.3 15.6 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)