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 17:08:43 C 00 15 43.77 +27 40 40.3 17.9 o C20
2009-12-10 17:08:58 C 00 15 43.89 +27 40 38.2 18.2 o C20
2009-12-10 17:09:14 C 00 15 43.98 +27 40 36.3 17.9 o C20
2009-12-10 17:09:29 C 00 15 44.09 +27 40 34.3 18.1 o C20
2009-12-10 17:09:45 C 00 15 44.19 +27 40 32.5 17.9 o C20
2009-12-10 17:10:01 C 00 15 44.29 +27 40 30.3 18.0 o C20
2009-12-10 17:10:16 C 00 15 44.39 +27 40 28.4 17.7 o C20
2009-12-10 17:10:32 C 00 15 44.50 +27 40 26.4 18.1 o C20
2009-12-10 17:10:48 C 00 15 44.60 +27 40 24.6 18.2 o C20
2009-12-10 17:11:04 C 00 15 44.70 +27 40 22.5 18.4 o C20
2009-12-10 17:11:20 C 00 15 44.81 +27 40 20.4 18.3 o C20
2009-12-10 17:11:36 C 00 15 44.92 +27 40 18.5 17.8 o C20
2009-12-10 17:11:52 C 00 15 45.02 +27 40 16.5 17.8 o C20
2009-12-10 17:12:08 C 00 15 45.13 +27 40 14.5 18.2 o C20
2009-12-10 17:12:23 C 00 15 45.23 +27 40 12.4 17.9 o C20
2009-12-10 17:12:40 C 00 15 45.32 +27 40 10.6 18.1 o C20
2009-12-10 17:12:55 C 00 15 45.43 +27 40 08.5 17.9 o C20
2009-12-10 17:13:11 C 00 15 45.55 +27 40 06.5 17.8 o C20
2009-12-10 17:13:27 C 00 15 45.65 +27 40 04.6 17.8 o C20
2009-12-10 17:13:43 C 00 15 45.76 +27 40 02.6 17.8 o C20
2009-12-10 17:13:59 C 00 15 45.87 +27 40 00.6 17.7 o C20
2009-12-10 17:14:15 C 00 15 45.97 +27 39 58.4 18.2 o C20
2009-12-10 17:14:30 C 00 15 46.06 +27 39 56.6 17.8 o C20
2009-12-10 17:14:46 C 00 15 46.16 +27 39 54.6 17.8 o C20
2009-12-10 17:15:01 C 00 15 46.26 +27 39 52.7 17.9 o C20
2009-12-10 17:15:17 C 00 15 46.38 +27 39 50.7 17.9 o C20
2009-12-10 17:15:33 C 00 15 46.48 +27 39 48.6 17.9 o C20
2009-12-10 17:15:49 C 00 15 46.59 +27 39 46.5 17.8 o C20
2009-12-10 17:16:05 C 00 15 46.69 +27 39 44.7 18.0 o C20
2009-12-10 17:16:21 C 00 15 46.80 +27 39 42.6 17.9 o C20
2009-12-10 17:17:43 C 00 15 47.34 +27 39 32.4 18.0 o C20
2009-12-10 17:17:59 C 00 15 47.44 +27 39 30.5 17.8 o C20
2009-12-10 17:18:15 C 00 15 47.54 +27 39 28.4 17.7 o C20
2009-12-10 17:18:30 C 00 15 47.65 +27 39 26.3 18.0 o C20
2009-12-10 17:19:33 C 00 15 48.06 +27 39 18.5 17.8 o C20
2009-12-10 17:19:49 C 00 15 48.17 +27 39 16.6 18.0 o C20
2009-12-10 17:20:04 C 00 15 48.27 +27 39 14.6 17.9 o C20
2009-12-10 17:20:20 C 00 15 48.37 +27 39 12.6 18.0 o C20
2009-12-10 17:20:36 C 00 15 48.48 +27 39 10.6 17.8 o C20
2009-12-10 17:20:51 C 00 15 48.58 +27 39 08.8 17.9 o C20
2009-12-10 17:21:08 C 00 15 48.68 +27 39 06.7 18.1 o C20
2009-12-10 17:22:43 C 00 15 49.31 +27 38 54.6 18.1 o C20
2009-12-10 17:23:00 C 00 15 49.42 +27 38 52.5 18.1 o C20
2009-12-10 17:23:15 C 00 15 49.53 +27 38 50.7 18.1 o C20
2009-12-10 18:34:22 C 00 16 22.17 +27 30 02.9 – w 160
2009-12-10 18:36:03 C 00 16 22.83 +27 29 50.5 – w 160
2009-12-10 18:37:43 C 00 16 23.52 +27 29 37.9 – w 160
2009-12-10 18:37:52 C 00 16 19.13 +27 29 26.4 17.2 o C20
2009-12-10 18:38:59 C 00 16 19.57 +27 29 18.0 17.2 o C20
2009-12-10 18:40:06 C 00 16 20.01 +27 29 09.6 17.1 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)