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189260 (2004 WY8)
Classification: Main-belt Asteroid          SPK-ID: 2189260
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .333359498739412 7.84e-08  
a 2.780204963149468 1.9161e-08 au
q 1.853397230241136 2.1665e-07 au
i 9.378090987130493 6.4905e-06 deg
node 66.31465551329717 4.603e-05 deg
peri 301.2554042516318 4.6367e-05 deg
M 159.2416092356767 1.0152e-05 deg
tp 2458251.524338371490
(2018-May-13.02433837)
4.2457e-05 TDB
period 1693.22100850671
4.64
1.7504e-05
4.792e-08
d
yr
n .2126125285425629 2.198e-09 deg/d
Q 3.7070126960578 2.5549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      485  
   data-arc span      7522 days (20.59 yr)  
   first obs. used      1999-09-11  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50751  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:30:55  

Additional Information
 Earth MOID = .873635 au 
 Jupiter MOID = 1.82946 au 
 T_jup = 3.231 
[ 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 15.1   n/a MPO266579  
diameter diameter 5.868 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.99141 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.051   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

189260 (2004 WY8)          Discovered 2004-Nov-18 by LINEAR at Socorro
Reference: 20080718/Numbers.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 2004 WY8 = 2000 AN151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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