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
2009-12-08 20:36:58 C 23 54 22.39 +33 24 02.2 16.0 o C20
2009-12-08 20:37:14 C 23 54 22.53 +33 23 59.9 16.0 o C20
2009-12-08 20:37:29 C 23 54 22.66 +33 23 57.8 15.9 o C20
2009-12-08 20:37:45 C 23 54 22.79 +33 23 55.6 15.9 o C20
2009-12-08 20:38:00 C 23 54 22.93 +33 23 53.5 16.0 o C20
2009-12-08 20:38:16 C 23 54 23.06 +33 23 51.5 15.9 o C20
2009-12-08 20:38:32 C 23 54 23.20 +33 23 49.3 16.0 o C20
2009-12-08 20:38:48 C 23 54 23.34 +33 23 47.0 15.9 o C20
2009-12-08 20:39:03 C 23 54 23.46 +33 23 45.0 16.0 o C20
2009-12-08 20:39:19 C 23 54 23.59 +33 23 42.9 16.0 o C20
2009-12-08 20:39:33 C 23 54 23.72 +33 23 40.8 15.9 o C20
2009-12-08 20:39:49 C 23 54 23.86 +33 23 38.6 15.9 o C20
2009-12-08 20:40:05 C 23 54 23.99 +33 23 36.5 15.9 o C20
2009-12-08 20:40:20 C 23 54 24.12 +33 23 34.4 16.0 o C20
2009-12-08 20:40:36 C 23 54 24.26 +33 23 32.3 16.0 o C20
2009-12-08 20:40:51 C 23 54 24.39 +33 23 30.2 15.9 o C20
2009-12-08 20:47:13 C 23 54 27.65 +33 22 38.0 15.8 o C20
2009-12-08 20:47:59 C 23 54 28.04 +33 22 31.8 15.8 o C20
2009-12-08 20:48:44 C 23 54 28.43 +33 22 25.5 15.7 o C20
2009-12-08 20:50:15 C 23 54 29.22 +33 22 13.1 15.8 o C20
2009-12-08 20:56:10 C 23 54 32.28 +33 21 24.7 16.7 o C20
2009-12-08 20:56:55 C 23 54 32.70 +33 21 18.9 17.5 o C20
2009-12-08 21:00:03 C 23 54 34.25 +33 20 52.2 15.7 o C20
2009-12-08 21:00:49 C 23 54 34.65 +33 20 46.5 15.5 o C20
2009-12-08 21:01:34 C 23 54 35.02 +33 20 40.2 15.8 o C20
2009-12-08 21:02:19 C 23 54 35.46 +33 20 34.1 15.5 o C20
2009-12-08 21:04:21 C 23 54 36.51 +33 20 17.2 15.5 o C20
2009-12-08 21:05:07 C 23 54 36.88 +33 20 11.1 15.6 o C20
2009-12-08 21:06:38 C 23 54 37.67 +33 19 58.7 15.5 o C20
2009-12-08 21:07:24 C 23 54 38.07 +33 19 52.5 15.5 o C20
2009-12-09 15:06:31 C 00 03 54.21 +30 59 20.2 15.8 o C20
2009-12-09 15:07:37 C 00 03 54.74 +30 59 10.8 15.7 o C20
2009-12-09 15:09:50 C 00 03 55.68 +30 58 54.5 15.9 o C20
2009-12-09 16:10:00 C 00 04 22.38 +30 51 07.4 15.6 o C20
2009-12-09 16:11:08 C 00 04 22.87 +30 50 58.8 15.7 o C20
2009-12-09 16:12:14 C 00 04 23.35 +30 50 50.4 15.8 o C20
2009-12-09 16:13:29 C 00 04 23.94 +30 50 40.2 15.8 o C20
2009-12-09 17:06:12 C 00 04 47.20 +30 43 48.8 15.6 o C20
2009-12-09 17:07:20 C 00 04 47.69 +30 43 40.0 15.6 o C20
2009-12-09 17:10:21 C 00 04 49.04 +30 43 16.2 15.6 o C20
2009-12-09 17:12:12 C 00 04 49.82 +30 43 02.0 16.8 o C20
2009-12-09 17:13:18 C 00 04 50.34 +30 42 53.0 16.7 o C20
2009-12-09 17:15:31 C 00 04 51.30 +30 42 36.0 16.7 o C20
2009-12-09 17:16:36 C 00 04 51.76 +30 42 27.6 16.7 o C20
2009-12-09 17:19:17 C 00 04 52.94 +30 42 06.4 15.2 o C20
2009-12-09 17:21:28 C 00 04 53.94 +30 41 49.1 15.1 o C20
2009-12-09 17:22:35 C 00 04 54.44 +30 41 40.2 15.2 o C20
2009-12-09 17:24:34 C 00 04 55.31 +30 41 24.7 15.0 o C20
2009-12-09 17:25:40 C 00 04 55.79 +30 41 16.2 15.1 o C20
2009-12-09 17:26:45 C 00 04 56.28 +30 41 07.7 15.1 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)