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 17:50:05 C 00 05 06.62 +30 38 04.2 15.7 o C20
2009-12-09 17:50:21 C 00 05 06.74 +30 38 02.1 15.7 o C20
2009-12-09 17:50:44 C 00 05 06.90 +30 37 59.2 15.7 o C20
2009-12-09 17:51:00 C 00 05 07.02 +30 37 57.2 15.7 o C20
2009-12-09 17:51:15 C 00 05 07.14 +30 37 55.1 15.8 o C20
2009-12-09 17:51:31 C 00 05 07.24 +30 37 53.1 15.8 o C20
2009-12-09 17:51:46 C 00 05 07.36 +30 37 50.9 15.7 o C20
2009-12-09 17:52:03 C 00 05 07.48 +30 37 48.9 15.7 o C20
2009-12-09 17:52:18 C 00 05 07.60 +30 37 46.8 15.8 o C20
2009-12-09 17:52:34 C 00 05 07.71 +30 37 44.7 15.8 o C20
2009-12-09 17:52:49 C 00 05 07.84 +30 37 42.6 15.7 o C20
2009-12-09 17:53:06 C 00 05 07.95 +30 37 40.5 15.8 o C20
2009-12-09 17:53:21 C 00 05 08.06 +30 37 38.5 15.7 o C20
2009-12-09 17:53:38 C 00 05 08.19 +30 37 36.4 15.8 o C20
2009-12-09 17:53:53 C 00 05 08.30 +30 37 34.3 15.8 o C20
2009-12-09 17:54:08 C 00 05 08.42 +30 37 32.3 15.8 o C20
2009-12-09 17:54:24 C 00 05 08.54 +30 37 30.2 15.8 o C20
2009-12-09 17:54:40 C 00 05 08.65 +30 37 28.1 15.7 o C20
2009-12-09 17:54:56 C 00 05 08.76 +30 37 26.0 15.7 o C20
2009-12-09 17:55:12 C 00 05 08.88 +30 37 24.1 15.7 o C20
2009-12-09 17:55:27 C 00 05 09.00 +30 37 21.9 15.8 o C20
2009-12-09 17:55:43 C 00 05 09.11 +30 37 19.9 15.7 o C20
2009-12-09 17:55:58 C 00 05 09.23 +30 37 17.9 15.8 o C20
2009-12-09 17:56:14 C 00 05 09.34 +30 37 15.9 15.8 o C20
2009-12-09 17:56:30 C 00 05 09.47 +30 37 13.7 15.7 o C20
2009-12-09 17:56:47 C 00 05 09.59 +30 37 11.5 15.7 o C20
2009-12-09 17:57:03 C 00 05 09.71 +30 37 09.4 15.8 o C20
2009-12-09 17:58:37 C 00 05 10.40 +30 36 57.0 15.7 o C20
2009-12-09 17:58:53 C 00 05 10.52 +30 36 54.9 15.7 o C20
2009-12-09 17:59:09 C 00 05 15.80 +30 36 50.4 o 151
2009-12-09 17:59:09 C 00 05 10.65 +30 36 52.8 15.8 o C20
2009-12-09 17:59:26 C 00 05 10.76 +30 36 50.6 15.7 o C20
2009-12-09 17:59:41 C 00 05 10.87 +30 36 48.7 15.7 o C20
2009-12-09 17:59:57 C 00 05 10.99 +30 36 46.6 15.8 o C20
2009-12-09 18:00:12 C 00 05 11.10 +30 36 44.5 15.7 o C20
2009-12-09 18:00:14 C 00 05 16.28 +30 36 41.9 o 151
2009-12-09 18:00:29 C 00 05 11.23 +30 36 42.3 15.7 o C20
2009-12-09 18:00:44 C 00 05 11.34 +30 36 40.3 15.8 o C20
2009-12-09 18:01:01 C 00 05 11.46 +30 36 38.1 15.8 o C20
2009-12-09 18:01:17 C 00 05 11.58 +30 36 36.1 15.8 o C20
2009-12-09 18:01:20 C 00 05 16.75 +30 36 33.4 o 151
2009-12-09 18:01:33 C 00 05 11.70 +30 36 34.0 15.7 o C20
2009-12-09 18:01:49 C 00 05 11.82 +30 36 32.0 15.8 o C20
2009-12-09 18:02:04 C 00 05 11.93 +30 36 29.9 15.7 o C20
2009-12-09 18:02:19 C 00 05 12.05 +30 36 27.8 15.7 o C20
2009-12-09 18:02:26 C 00 05 17.25 +30 36 24.9 o 151
2009-12-09 18:02:35 C 00 05 12.15 +30 36 25.9 15.8 o C20
2009-12-09 18:02:51 C 00 05 12.27 +30 36 23.8 15.8 o C20
2009-12-09 18:03:06 C 00 05 12.39 +30 36 21.7 15.8 o C20
2009-12-09 18:03:22 C 00 05 12.51 +30 36 19.7 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)