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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3338201655358737 6.5792e-08  
a 2.779242211021294 1.8131e-08 au
q 1.851475116073878 1.8363e-07 au
i 9.379865041720192 6.3936e-06 deg
node 66.30247744761724 3.84e-05 deg
peri 301.2776398767032 3.8739e-05 deg
M 243.4567636144195 1.0733e-05 deg
tp 2459944.363788209301
(2022-Dec-30.86378821)
5.4733e-05 TDB
period 1692.341571009873
4.63
1.656e-05
4.534e-08
d
yr
n .2127230141756648 2.0816e-09 deg/d
Q 3.70700930596871 2.4183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      7944 days (21.75 yr)  
   first obs. used      1999-09-11  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5195  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:49:17  

Additional Information
 Earth MOID = .870968 au 
 Jupiter MOID = 1.8313 au 
 T_jup = 3.232 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457620.5 (2016-Aug-20.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .332248283857697 6.57e-08  
q 1.858003008706302 1.8315e-07 au
tp 2458251.531872868858
(2018-May-13.03187287)
4.2566e-05 TDB
node 66.33567868617571 3.8412e-05 deg
peri 301.2051550516161 3.8754e-05 deg
i 9.373343500786168 6.3883e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      7944 days (21.75 yr)  
   first obs. used      1999-09-11  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5195  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:49:17  

Additional Information
 Jupiter MOID = 1.8313 au 
 T_jup = 3.232 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.31646098260328E-15 -1.200640416110965E-14 7.558343964718239E-13 -7.962611046039833E-15 1.21374550204154E-13 -1.479013754702515E-14
q -1.200640416110965E-14 3.354351445175272E-14 -1.76002215071679E-12 1.836718337752112E-14 -2.957006993755783E-13 4.308063648350016E-14
tp 7.558343964718239E-13 -1.76002215071679E-12 1.811855179679588E-9 6.876556766270674E-12 2.914046325525964E-10 -6.534208119771791E-12
node -7.962611046039833E-15 1.836718337752112E-14 6.876556766270674E-12 1.475495462446427E-9 -1.453722839168803E-9 -1.192403255912834E-10
peri 1.21374550204154E-13 -2.957006993755783E-13 2.914046325525964E-10 -1.453722839168803E-9 1.501891357650341E-9 1.16643912326814E-10
i -1.479013754702515E-14 4.308063648350016E-14 -6.534208119771791E-12 -1.192403255912834E-10 1.16643912326814E-10 4.081004233406637E-11

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 15.18   n/a E2021B55  
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. 2020-October); 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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