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85545 (1997 WL55)
Classification: Main-belt Asteroid          SPK-ID: 2085545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1659040418180412 5.1256e-08  
a 3.122599698085933 2.3433e-08 au
q 2.604547787193682 1.6327e-07 au
i 18.828010098718 5.5529e-06 deg
node 60.88045536378622 1.4549e-05 deg
peri 338.6897507410345 1.9975e-05 deg
M 334.5074801035784 1.3318e-05 deg
tp 2458743.219449908781
(2019-Sep-16.71944991)
7.4779e-05 TDB
period 2015.454030277064
5.52
2.2687e-05
6.211e-08
d
yr
n .1786198020852457 2.0106e-09 deg/d
Q 3.640651608978184 2.732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      8006 days (21.92 yr)  
   first obs. used      1997-11-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57403  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:12:21  

Additional Information
 Earth MOID = 1.62167 au 
 Jupiter MOID = 1.77346 au 
 T_jup = 3.112 
[ 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 14.2   n/a MPO320051  
diameter diameter 7.807 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85545 (1997 WL55)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 WL55 = 2002 WA13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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