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 18:45:47 C 00 16 22.19 +27 28 27.5 18.2 o C20
2009-12-10 18:49:04 C 00 16 23.52 +27 28 02.5 18.2 o C20
2009-12-10 18:54:51 C 00 16 25.88 +27 27 17.6 17.0 o C20
2009-12-10 18:58:01 C 00 16 27.16 +27 26 53.7 16.5 o C20
2009-12-10 18:59:08 C 00 16 27.61 +27 26 45.4 16.6 o C20
2009-12-10 19:01:18 C 00 16 28.49 +27 26 28.6 16.7 o C20
2009-12-10 19:06:16 C 00 16 36.50 +27 25 45.9 r J95
2009-12-10 19:13:22 C 00 16 33.35 +27 24 57.0 18.0 o C20
2009-12-10 19:15:34 C 00 16 34.17 +27 24 40.9 17.9 o C20
2009-12-10 19:17:34 C 00 16 35.01 +27 24 25.2 17.0 o C20
2009-12-10 19:18:40 C 00 16 35.47 +27 24 16.8 16.7 o C20
2009-12-10 19:19:45 C 00 16 35.88 +27 24 08.1 16.6 o C20
2009-12-10 19:20:52 C 00 16 36.35 +27 24 00.0 16.6 o C20
2009-12-10 19:25:27 C 00 16 38.18 +27 23 25.2 16.7 o C20
2009-12-10 19:26:33 C 00 16 38.62 +27 23 16.9 16.5 o C20
2009-12-10 19:27:40 C 00 16 39.06 +27 23 08.4 16.6 o C20
2009-12-10 19:43:07 C 00 16 45.32 +27 21 10.4 17.0 r C20
2009-12-10 19:44:13 C 00 16 45.76 +27 21 02.5 16.9 r C20
2009-12-10 19:45:19 C 00 16 46.21 +27 20 53.7 17.1 r C20
2009-12-10 19:46:25 C 00 16 46.66 +27 20 45.4 17.0 r C20
2009-12-10 19:47:31 C 00 16 47.10 +27 20 37.0 17.0 r C20
2009-12-10 19:48:37 C 00 16 47.55 +27 20 28.7 17.1 r C20
2009-12-10 19:49:43 C 00 16 47.99 +27 20 20.4 17.0 r C20
2009-12-10 19:50:50 C 00 16 48.44 +27 20 11.9 16.8 r C20
2009-12-10 19:51:55 C 00 16 48.88 +27 20 03.2 16.9 r C20
2009-12-10 19:54:08 C 00 16 49.76 +27 19 47.0 17.0 r C20
2009-12-10 19:56:32 C 00 16 50.76 +27 19 28.6 17.3 o C20
2009-12-10 19:56:48 C 00 16 50.86 +27 19 26.6 17.2 o C20
2009-12-10 19:57:04 C 00 16 50.99 +27 19 24.7 17.0 o C20
2009-12-10 19:57:20 C 00 16 51.09 +27 19 22.7 17.1 o C20
2009-12-10 19:57:35 C 00 16 51.19 +27 19 20.6 16.8 o C20
2009-12-10 19:57:51 C 00 16 51.29 +27 19 18.9 17.0 o C20
2009-12-10 19:58:08 C 00 16 51.41 +27 19 16.6 17.0 o C20
2009-12-10 19:58:23 C 00 16 51.53 +27 19 14.5 17.0 o C20
2009-12-10 19:58:39 C 00 16 51.61 +27 19 12.5 17.6 o C20
2009-12-10 19:58:54 C 00 16 51.72 +27 19 10.7 17.4 o C20
2009-12-10 19:59:10 C 00 16 51.85 +27 19 08.6 17.3 o C20
2009-12-10 19:59:26 C 00 16 51.95 +27 19 06.5 17.3 o C20
2009-12-10 19:59:42 C 00 16 52.06 +27 19 04.6 17.4 o C20
2009-12-10 19:59:58 C 00 16 52.16 +27 19 02.6 17.2 o C20
2009-12-10 20:00:14 C 00 16 52.26 +27 19 00.5 17.2 o C20
2009-12-10 20:00:29 C 00 16 52.37 +27 18 58.4 17.2 o C20
2009-12-10 20:02:05 C 00 16 53.02 +27 18 46.3 17.1 o C20
2009-12-10 20:02:21 C 00 16 53.13 +27 18 44.4 17.3 o C20
2009-12-10 20:02:37 C 00 16 53.23 +27 18 42.4 17.0 o C20
2009-12-10 20:02:54 C 00 16 53.33 +27 18 40.2 17.3 o C20
2009-12-10 20:03:09 C 00 16 53.45 +27 18 38.5 17.2 o C20
2009-12-10 20:03:25 C 00 16 53.57 +27 18 36.2 17.0 o C20
2009-12-10 20:03:41 C 00 16 53.66 +27 18 34.3 17.0 o C20
2009-12-10 20:03:57 C 00 16 53.76 +27 18 32.2 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)