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 20:04:13 C 00 16 53.88 +27 18 30.2 17.1 o C20
2009-12-10 20:04:29 C 00 16 53.99 +27 18 28.2 17.2 o C20
2009-12-10 20:04:44 C 00 16 54.08 +27 18 26.2 17.3 o C20
2009-12-10 20:05:01 C 00 16 54.19 +27 18 24.0 17.3 o C20
2009-12-10 20:06:03 C 00 16 54.65 +27 18 16.1 17.0 o C20
2009-12-10 20:06:19 C 00 16 54.74 +27 18 14.2 17.4 o C20
2009-12-10 20:06:34 C 00 16 54.82 +27 18 12.3 17.1 o C20
2009-12-10 20:06:50 C 00 16 54.96 +27 18 10.2 17.4 o C20
2009-12-10 20:07:06 C 00 16 55.04 +27 18 08.2 17.2 o C20
2009-12-10 20:07:21 C 00 16 55.16 +27 18 06.1 17.1 o C20
2009-12-10 20:07:36 C 00 16 55.28 +27 18 04.3 17.3 o C20
2009-12-10 20:07:52 C 00 16 55.35 +27 18 02.4 17.2 o C20
2009-12-10 20:08:08 C 00 16 55.48 +27 18 00.2 17.1 o C20
2009-12-10 20:08:24 C 00 16 55.59 +27 17 58.5 17.2 o C20
2009-12-10 20:08:39 C 00 16 55.68 +27 17 56.3 17.1 o C20
2009-12-10 20:08:55 C 00 16 55.80 +27 17 54.5 16.9 o C20
2009-12-10 20:09:10 C 00 16 55.90 +27 17 52.3 17.1 o C20
2009-12-10 20:09:27 C 00 16 56.01 +27 17 50.4 17.1 o C20
2009-12-10 20:09:42 C 00 16 56.12 +27 17 48.4 17.2 o C20
2009-12-10 20:09:58 C 00 16 56.23 +27 17 46.5 17.1 o C20
2009-12-10 20:10:14 C 00 16 56.33 +27 17 44.5 17.2 o C20
2009-12-10 20:10:29 C 00 16 56.43 +27 17 42.5 17.0 o C20
2009-12-10 20:10:45 C 00 16 56.55 +27 17 40.4 17.2 o C20
2009-12-10 20:11:00 C 00 16 56.64 +27 17 38.5 17.2 o C20
2009-12-10 20:11:17 C 00 16 56.76 +27 17 36.4 17.3 o C20
2009-12-10 20:11:32 C 00 16 56.86 +27 17 34.5 17.2 o C20
2009-12-10 20:11:48 C 00 16 56.96 +27 17 32.4 17.1 o C20
2009-12-10 20:12:02 C 00 16 57.08 +27 17 30.5 16.9 o C20
2009-12-10 20:12:19 C 00 16 57.17 +27 17 28.7 17.0 o C20
2009-12-10 20:12:33 C 00 16 57.29 +27 17 26.6 17.2 o C20
2009-12-10 20:12:49 C 00 16 57.39 +27 17 24.6 17.2 o C20
2009-12-10 20:13:05 C 00 16 57.50 +27 17 22.5 17.2 o C20
2009-12-10 20:13:21 C 00 16 57.61 +27 17 20.5 17.0 o C20
2009-12-10 20:13:37 C 00 16 57.71 +27 17 18.6 17.4 o C20
2009-12-10 20:13:52 C 00 16 57.82 +27 17 16.6 17.1 o C20
2009-12-10 20:14:08 C 00 16 57.91 +27 17 14.7 17.2 o C20
2009-12-10 20:14:24 C 00 16 58.02 +27 17 12.4 16.9 o C20
2009-12-10 20:14:55 C 00 16 58.22 +27 17 08.7 16.9 o C20
2009-12-10 20:15:12 C 00 16 58.36 +27 17 06.4 17.1 o C20
2009-12-10 20:15:27 C 00 16 58.45 +27 17 04.5 17.1 o C20
2009-12-10 20:15:44 C 00 16 58.58 +27 17 02.4 17.3 o C20
2009-12-10 20:15:59 C 00 16 58.69 +27 17 00.5 17.1 o C20
2009-12-10 20:16:16 C 00 16 58.80 +27 16 58.4 17.3 o C20
2009-12-10 20:16:32 C 00 16 58.89 +27 16 56.5 16.9 o C20
2009-12-10 20:16:48 C 00 16 59.01 +27 16 54.2 17.1 o C20
2009-12-10 20:17:04 C 00 16 59.11 +27 16 52.4 17.3 o C20
2009-12-10 20:17:19 C 00 16 59.22 +27 16 50.4 17.1 o C20
2009-12-10 20:17:35 C 00 16 59.32 +27 16 48.2 17.0 o C20
2009-12-10 20:17:51 C 00 16 59.43 +27 16 46.2 17.0 o C20
2009-12-10 20:18:08 C 00 16 59.54 +27 16 44.3 17.3 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)