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85309 (1994 WO4)
Classification: Main-belt Asteroid          SPK-ID: 2085309
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1362287286836171 5.1793e-08  
a 3.098120431566699 2.759e-08 au
q 2.676067423865629 1.6825e-07 au
i 6.765207343921738 5.3458e-06 deg
node 142.2421361042006 4.303e-05 deg
peri 198.3872972063921 4.6472e-05 deg
M 233.9322678775501 1.819e-05 deg
tp 2459298.004975814937
(2021-Mar-24.50497581)
0.00010408 TDB
period 1991.800654028435
5.45
2.6607e-05
7.285e-08
d
yr
n .1807409789086557 2.4144e-09 deg/d
Q 3.520173439267769 3.1348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      8923 days (24.43 yr)  
   first obs. used      1994-11-26  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60948  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:47:43  

Additional Information
 Earth MOID = 1.66741 au 
 Jupiter MOID = 1.86569 au 
 T_jup = 3.198 
[ 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 15.0   n/a MPO436372  
diameter diameter 2.887 km 0.746 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85309 (1994 WO4)          Discovered 1994-Nov-26 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1994 WO4 = 1995 YN13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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