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JPL Small-Body Database Browser
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490581 (2009 WZ104)
Classification: Aten [NEO, PHA]          SPK-ID: 2490581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927616917033665 1.1325e-07  
a .8553669665751508 1.0108e-08 au
q .6904849830709477 1.0369e-07 au
i 9.834514159737953 2.0917e-05 deg
node 263.2676746615622 1.1404e-05 deg
peri 10.55325384974853 3.8294e-05 deg
M 237.957690398981 7.4491e-05 deg
tp 2459098.456905095504
(2020-Sep-05.95690510)
6.1182e-05 TDB
period 288.9529536901452
0.79
5.1219e-06
1.402e-08
d
yr
n 1.245877556891289 2.2084e-08 deg/d
Q 1.020248950079354 1.2056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      4417 days (12.09 yr)  
   first obs. used      2005-11-19  
   last obs. used      2017-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .16768  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:41:07  

Additional Information
 Earth MOID = .0305972 au 
 Jupiter MOID = 4.04314 au 
 T_jup = 6.867 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.0   n/a MPO434808  
diameter diameter 0.237 km 0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 19.304 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Karashevich, S.V.; Devyatkin, A.V.; Verestchagina, I.A.; Lyvov, V.N.; Tsekmeister, S.D. (2012) Solar System Research 46, 143-148.]
geometric albedo albedo 0.314   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

490581 (2009 WZ104)          Discovered 2009-Nov-25 by CSS at Catalina
Reference: Last Updated: 2017-05-15

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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