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 20:18:23 C 00 16 59.67 +27 16 42.1 17.2 o C20
2009-12-10 20:18:39 C 00 16 59.75 +27 16 40.2 17.1 o C20
2009-12-10 20:18:55 C 00 16 59.88 +27 16 38.1 17.1 o C20
2009-12-10 20:19:12 C 00 16 59.99 +27 16 36.4 17.1 o C20
2009-12-10 20:19:27 C 00 17 00.08 +27 16 34.3 17.1 o C20
2009-12-10 20:19:43 C 00 17 00.19 +27 16 32.0 17.1 o C20
2009-12-10 20:19:59 C 00 17 00.30 +27 16 30.1 16.9 o C20
2009-12-10 20:20:15 C 00 17 00.43 +27 16 28.1 16.9 o C20
2009-12-10 20:20:36 C 00 17 00.56 +27 16 25.4 17.4 o C20
2009-12-10 20:20:51 C 00 17 00.66 +27 16 23.6 17.2 o C20
2009-12-10 20:21:07 C 00 17 00.77 +27 16 21.6 17.3 o C20
2009-12-10 20:21:23 C 00 17 00.89 +27 16 19.5 17.2 o C20
2009-12-10 20:21:39 C 00 17 01.00 +27 16 17.4 17.1 o C20
2009-12-10 20:21:55 C 00 17 01.08 +27 16 15.6 17.0 o C20
2009-12-10 20:22:11 C 00 17 01.21 +27 16 13.2 17.0 o C20
2009-12-10 20:22:26 C 00 17 01.30 +27 16 11.2 17.0 o C20
2009-12-10 20:22:42 C 00 17 01.41 +27 16 09.5 17.0 o C20
2009-12-10 21:25:56 C 00 17 31.66 +27 08 21.7 r J95
2009-12-10 22:29:38 C 00 17 57.09 +27 00 22.2 r J95
2009-12-11 01:36:14 C 00 19 19.33 +26 38 19.2 r H53
2009-12-11 01:38:16 C 00 19 20.10 +26 38 03.2 r H53
2009-12-11 01:39:47 C 00 19 20.54 +26 37 52.7 r H53
2009-12-11 01:41:18 C 00 19 21.18 +26 37 41.3 r H53
2009-12-11 01:42:49 C 00 19 21.75 +26 37 29.7 r H53
2009-12-11 01:44:20 C 00 19 22.37 +26 37 18.3 r H53
2009-12-11 15:08:28 C 00 24 51.04 +25 00 02.1 16.0 o C20
2009-12-11 15:09:34 C 00 24 51.45 +24 59 54.2 15.9 o C20
2009-12-11 15:10:41 C 00 24 51.80 +24 59 46.5 15.7 o C20
2009-12-11 15:11:57 C 00 24 52.29 +24 59 37.2 15.9 o C20
2009-12-11 15:14:01 C 00 24 52.99 +24 59 23.0 16.1 o C20
2009-12-11 15:15:45 C 00 24 53.63 +24 59 10.5 15.7 o C20
2009-12-11 15:16:11 C 00 24 53.78 +24 59 07.4 15.8 o C20
2009-12-11 15:16:37 C 00 24 53.93 +24 59 04.5 15.8 o C20
2009-12-11 15:17:02 C 00 24 54.09 +24 59 01.3 15.8 o C20
2009-12-11 15:17:28 C 00 24 54.23 +24 58 58.3 15.8 o C20
2009-12-11 15:17:54 C 00 24 54.39 +24 58 55.4 16.1 o C20
2009-12-11 15:18:20 C 00 24 54.55 +24 58 52.2 15.8 o C20
2009-12-11 15:18:46 C 00 24 54.69 +24 58 49.2 15.7 o C20
2009-12-11 15:19:12 C 00 24 54.85 +24 58 46.0 15.7 o C20
2009-12-11 15:19:39 C 00 24 55.01 +24 58 42.9 15.6 o C20
2009-12-11 15:20:05 C 00 24 55.16 +24 58 39.8 15.6 o C20
2009-12-11 15:20:31 C 00 24 55.30 +24 58 36.8 15.6 o C20
2009-12-11 15:21:02 C 00 24 55.52 +24 58 33.1 15.8 o C20
2009-12-11 15:21:29 C 00 24 55.66 +24 58 29.8 15.8 o C20
2009-12-11 15:21:57 C 00 24 55.84 +24 58 26.5 15.7 o C20
2009-12-11 15:22:25 C 00 24 55.99 +24 58 23.4 15.7 o C20
2009-12-11 15:22:51 C 00 24 56.15 +24 58 20.4 15.5 o C20
2009-12-11 15:23:17 C 00 24 56.31 +24 58 16.9 15.7 o C20
2009-12-11 15:23:43 C 00 24 56.47 +24 58 14.1 15.9 o C20
2009-12-11 15:24:08 C 00 24 56.62 +24 58 11.1 16.0 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)