IAA RAS IAA Minor Planet Database

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 15:42:57 C 00 15 09.88 +27 51 22.5 17.5 o C20
2009-12-10 15:45:08 C 00 15 10.72 +27 51 06.7 17.5 o C20
2009-12-10 15:46:54 C 00 15 11.46 +27 50 53.3 16.9 o C20
2009-12-10 15:48:00 C 00 15 11.89 +27 50 45.0 16.9 o C20
2009-12-10 15:49:05 C 00 15 12.32 +27 50 37.1 16.7 o C20
2009-12-10 15:50:11 C 00 15 12.74 +27 50 28.9 17.2 o C20
2009-12-10 15:51:16 C 00 15 13.19 +27 50 20.4 16.9 o C20
2009-12-10 15:59:37 C 00 15 16.50 +27 49 18.3 18.2 o C20
2009-12-10 15:59:53 C 00 15 16.59 +27 49 16.4 17.9 o C20
2009-12-10 16:00:09 C 00 15 16.71 +27 49 14.5 17.8 o C20
2009-12-10 16:00:25 C 00 15 16.81 +27 49 12.3 17.6 o C20
2009-12-10 16:00:41 C 00 15 16.92 +27 49 10.4 17.8 o C20
2009-12-10 16:02:01 C 00 15 17.44 +27 49 00.3 17.4 o C20
2009-12-10 16:02:17 C 00 15 17.54 +27 48 58.3 17.9 o C20
2009-12-10 16:02:33 C 00 15 17.65 +27 48 56.4 17.7 o C20
2009-12-10 16:02:48 C 00 15 17.75 +27 48 54.4 17.7 o C20
2009-12-10 16:03:05 C 00 15 17.86 +27 48 52.4 18.1 o C20
2009-12-10 16:03:21 C 00 15 17.96 +27 48 50.5 17.9 o C20
2009-12-10 16:03:37 C 00 15 18.07 +27 48 48.5 18.0 o C20
2009-12-10 16:03:52 C 00 15 18.17 +27 48 46.6 18.0 o C20
2009-12-10 16:04:09 C 00 15 18.27 +27 48 44.6 18.0 o C20
2009-12-10 16:04:24 C 00 15 18.39 +27 48 42.5 18.1 o C20
2009-12-10 16:04:40 C 00 15 18.49 +27 48 40.5 17.7 o C20
2009-12-10 16:04:56 C 00 15 18.60 +27 48 38.6 17.8 o C20
2009-12-10 16:05:13 C 00 15 18.70 +27 48 36.6 17.7 o C20
2009-12-10 16:05:28 C 00 15 18.80 +27 48 34.6 17.7 o C20
2009-12-10 16:05:45 C 00 15 18.91 +27 48 32.5 17.8 o C20
2009-12-10 16:06:00 C 00 15 19.03 +27 48 30.6 17.8 o C20
2009-12-10 16:06:16 C 00 15 19.13 +27 48 28.7 17.6 o C20
2009-12-10 16:06:31 C 00 15 19.21 +27 48 26.7 18.2 o C20
2009-12-10 16:06:48 C 00 15 19.33 +27 48 24.7 18.0 o C20
2009-12-10 16:07:03 C 00 15 19.42 +27 48 22.9 17.9 o C20
2009-12-10 16:07:19 C 00 15 19.53 +27 48 20.8 17.9 o C20
2009-12-10 16:07:35 C 00 15 19.64 +27 48 18.8 18.1 o C20
2009-12-10 16:07:51 C 00 15 19.74 +27 48 16.9 17.9 o C20
2009-12-10 16:08:06 C 00 15 19.84 +27 48 14.9 18.0 o C20
2009-12-10 16:08:23 C 00 15 19.96 +27 48 12.9 17.8 o C20
2009-12-10 16:08:39 C 00 15 20.06 +27 48 10.8 17.9 o C20
2009-12-10 16:08:55 C 00 15 20.17 +27 48 08.8 17.7 o C20
2009-12-10 16:09:11 C 00 15 20.26 +27 48 06.8 18.0 o C20
2009-12-10 16:09:27 C 00 15 20.37 +27 48 04.8 17.9 o C20
2009-12-10 16:09:43 C 00 15 20.48 +27 48 02.9 18.0 o C20
2009-12-10 16:09:59 C 00 15 20.59 +27 48 00.8 18.1 o C20
2009-12-10 16:10:14 C 00 15 20.69 +27 47 58.9 18.1 o C20
2009-12-10 16:10:30 C 00 15 20.80 +27 47 56.9 17.7 o C20
2009-12-10 16:10:46 C 00 15 20.90 +27 47 54.9 18.0 o C20
2009-12-10 16:11:02 C 00 15 21.00 +27 47 52.9 17.7 o C20
2009-12-10 16:11:18 C 00 15 21.11 +27 47 51.0 17.8 o C20
2009-12-10 16:11:34 C 00 15 21.22 +27 47 48.9 18.1 o C20
2009-12-10 16:11:51 C 00 15 21.33 +27 47 46.8 17.8 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)