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 16:35:32 C 00 15 30.67 +27 44 49.4 17.3 o C20
2009-12-10 16:36:38 C 00 15 31.12 +27 44 40.7 17.2 o C20
2009-12-10 16:37:43 C 00 15 31.54 +27 44 33.1 17.1 o C20
2009-12-10 16:38:49 C 00 15 31.96 +27 44 24.9 17.4 o C20
2009-12-10 16:40:48 C 00 15 32.75 +27 44 09.8 16.9 o C20
2009-12-10 16:41:55 C 00 15 33.19 +27 44 01.5 16.9 o C20
2009-12-10 16:43:01 C 00 15 33.63 +27 43 53.0 17.0 o C20
2009-12-10 16:44:06 C 00 15 34.05 +27 43 45.3 16.9 o C20
2009-12-10 16:45:13 C 00 15 34.48 +27 43 36.9 16.9 o C20
2009-12-10 16:57:04 C 00 15 39.17 +27 42 07.7 18.0 o C20
2009-12-10 16:57:19 C 00 15 39.27 +27 42 05.9 18.1 o C20
2009-12-10 16:57:36 C 00 15 39.38 +27 42 03.8 18.0 o C20
2009-12-10 16:57:51 C 00 15 39.49 +27 42 01.8 17.9 o C20
2009-12-10 16:58:08 C 00 15 39.60 +27 41 59.7 18.1 o C20
2009-12-10 16:58:23 C 00 15 39.70 +27 41 57.8 17.9 o C20
2009-12-10 16:58:40 C 00 15 39.82 +27 41 55.7 17.9 o C20
2009-12-10 16:58:55 C 00 15 39.92 +27 41 53.6 18.1 o C20
2009-12-10 16:59:12 C 00 15 40.01 +27 41 51.8 17.8 o C20
2009-12-10 16:59:27 C 00 15 40.13 +27 41 49.9 17.7 o C20
2009-12-10 16:59:43 C 00 15 40.22 +27 41 48.0 17.7 o C20
2009-12-10 16:59:58 C 00 15 40.32 +27 41 45.9 17.8 o C20
2009-12-10 17:00:13 C 00 15 40.42 +27 41 44.0 18.0 o C20
2009-12-10 17:00:29 C 00 15 40.54 +27 41 42.0 17.7 o C20
2009-12-10 17:00:45 C 00 15 40.64 +27 41 40.0 18.1 o C20
2009-12-10 17:01:01 C 00 15 40.75 +27 41 38.2 18.0 o C20
2009-12-10 17:01:16 C 00 15 40.83 +27 41 36.1 18.0 o C20
2009-12-10 17:01:33 C 00 15 40.95 +27 41 34.1 18.0 o C20
2009-12-10 17:01:48 C 00 15 41.04 +27 41 32.1 17.9 o C20
2009-12-10 17:02:04 C 00 15 41.15 +27 41 30.1 18.2 o C20
2009-12-10 17:02:20 C 00 15 41.25 +27 41 28.3 18.0 o C20
2009-12-10 17:03:24 C 00 15 41.68 +27 41 19.9 17.9 o C20
2009-12-10 17:03:40 C 00 15 41.78 +27 41 18.1 18.3 o C20
2009-12-10 17:03:56 C 00 15 41.88 +27 41 16.0 18.0 o C20
2009-12-10 17:04:11 C 00 15 41.98 +27 41 14.2 18.0 o C20
2009-12-10 17:04:28 C 00 15 42.09 +27 41 12.1 18.1 o C20
2009-12-10 17:04:44 C 00 15 42.21 +27 41 10.1 18.0 o C20
2009-12-10 17:05:01 C 00 15 42.31 +27 41 08.1 18.0 o C20
2009-12-10 17:05:16 C 00 15 42.41 +27 41 06.0 18.0 o C20
2009-12-10 17:05:33 C 00 15 42.53 +27 41 04.0 17.9 o C20
2009-12-10 17:05:48 C 00 15 42.64 +27 41 02.1 18.2 o C20
2009-12-10 17:06:04 C 00 15 42.73 +27 41 00.2 17.9 o C20
2009-12-10 17:06:19 C 00 15 42.84 +27 40 58.1 17.8 o C20
2009-12-10 17:06:35 C 00 15 42.94 +27 40 56.0 18.0 o C20
2009-12-10 17:06:51 C 00 15 43.04 +27 40 54.1 17.7 o C20
2009-12-10 17:07:07 C 00 15 43.15 +27 40 52.2 18.1 o C20
2009-12-10 17:07:23 C 00 15 43.25 +27 40 50.2 17.8 o C20
2009-12-10 17:07:39 C 00 15 43.36 +27 40 48.2 18.0 o C20
2009-12-10 17:07:55 C 00 15 43.47 +27 40 46.2 18.0 o C20
2009-12-10 17:08:11 C 00 15 43.57 +27 40 44.3 17.8 o C20
2009-12-10 17:08:26 C 00 15 43.67 +27 40 42.2 17.7 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)