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 18:15:05 C 23 53 10.67 +33 43 21.6 15.9 o C20
2009-12-08 18:15:52 C 23 53 11.07 +33 43 15.2 15.9 o C20
2009-12-08 18:16:40 C 23 53 11.46 +33 43 08.7 16.0 o C20
2009-12-08 18:18:29 C 23 53 12.37 +33 42 53.9 15.4 o C20
2009-12-08 18:19:16 C 23 53 12.76 +33 42 47.5 15.9 o C20
2009-12-08 18:20:02 C 23 53 13.14 +33 42 41.3 16.0 o C20
2009-12-08 18:20:49 C 23 53 13.54 +33 42 34.9 16.0 o C20
2009-12-08 18:54:15 C 23 53 30.26 +33 38 02.9 15.9 o C20
2009-12-08 18:55:01 C 23 53 30.65 +33 37 56.5 15.9 o C20
2009-12-08 18:59:43 C 23 53 33.00 +33 37 18.2 15.4 o C20
2009-12-08 19:00:28 C 23 53 33.38 +33 37 12.1 15.4 o C20
2009-12-08 19:01:13 C 23 53 33.75 +33 37 06.0 15.6 o C20
2009-12-08 19:01:59 C 23 53 34.14 +33 36 59.8 15.5 o C20
2009-12-08 19:38:28 C 23 53 52.56 +33 32 01.4 15.8 o C20
2009-12-08 19:39:15 C 23 53 52.95 +33 31 55.1 15.8 o C20
2009-12-08 19:40:02 C 23 53 53.34 +33 31 48.9 15.8 o C20
2009-12-08 19:41:38 C 23 53 54.17 +33 31 35.4 15.9 o C20
2009-12-08 19:41:54 C 23 53 54.29 +33 31 33.4 15.8 o C20
2009-12-08 19:42:10 C 23 53 54.43 +33 31 31.4 15.9 o C20
2009-12-08 19:42:25 C 23 53 54.56 +33 31 29.1 15.9 o C20
2009-12-08 19:42:41 C 23 53 54.69 +33 31 27.0 16.0 o C20
2009-12-08 19:42:56 C 23 53 54.83 +33 31 24.9 16.0 o C20
2009-12-08 19:44:45 C 23 53 55.74 +33 31 09.9 15.8 r C20
2009-12-08 19:45:01 C 23 53 55.88 +33 31 07.7 15.8 r C20
2009-12-08 19:45:16 C 23 53 56.02 +33 31 05.7 15.8 r C20
2009-12-08 19:45:32 C 23 53 56.15 +33 31 03.4 15.8 r C20
2009-12-08 19:45:47 C 23 53 56.27 +33 31 01.3 15.8 r C20
2009-12-08 19:46:03 C 23 53 56.41 +33 30 59.1 15.8 r C20
2009-12-08 19:46:18 C 23 53 56.53 +33 30 57.1 15.8 r C20
2009-12-08 19:46:34 C 23 53 56.67 +33 30 55.0 15.8 r C20
2009-12-08 19:46:50 C 23 53 56.81 +33 30 52.9 15.8 r C20
2009-12-08 19:47:05 C 23 53 56.92 +33 30 50.8 15.8 r C20
2009-12-08 19:47:20 C 23 53 57.06 +33 30 48.8 15.8 r C20
2009-12-08 19:47:35 C 23 53 57.19 +33 30 46.6 15.8 r C20
2009-12-08 19:47:51 C 23 53 57.32 +33 30 44.6 15.8 r C20
2009-12-08 19:48:06 C 23 53 57.45 +33 30 42.4 15.9 r C20
2009-12-08 19:48:21 C 23 53 57.57 +33 30 40.4 15.9 r C20
2009-12-08 19:48:37 C 23 53 57.70 +33 30 38.3 15.8 r C20
2009-12-08 19:48:52 C 23 53 57.85 +33 30 36.1 15.8 r C20
2009-12-08 19:49:08 C 23 53 57.96 +33 30 34.0 15.9 r C20
2009-12-08 19:49:23 C 23 53 58.11 +33 30 31.9 15.7 r C20
2009-12-08 19:49:39 C 23 53 58.24 +33 30 29.7 15.7 r C20
2009-12-08 19:49:54 C 23 53 58.36 +33 30 27.6 15.9 r C20
2009-12-08 19:50:10 C 23 53 58.49 +33 30 25.5 15.8 r C20
2009-12-08 19:50:26 C 23 53 58.63 +33 30 23.4 15.9 r C20
2009-12-08 19:50:41 C 23 53 58.75 +33 30 21.3 15.9 r C20
2009-12-08 19:50:57 C 23 53 58.89 +33 30 19.2 15.8 r C20
2009-12-08 19:51:12 C 23 53 59.03 +33 30 16.9 15.9 r C20
2009-12-08 19:51:28 C 23 53 59.15 +33 30 15.0 15.8 r C20
2009-12-08 19:51:43 C 23 53 59.29 +33 30 12.7 15.8 r 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)