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85520 (1997 WO2)
Classification: Main-belt Asteroid          SPK-ID: 2085520
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1659185042391562 4.5788e-08  
a 2.334733184326515 9.6543e-09 au
q 1.947357746585538 1.0945e-07 au
i 6.688492325991266 4.3284e-06 deg
node 93.48392222235874 4.3734e-05 deg
peri 293.5535808238232 4.5868e-05 deg
M 140.9006502140338 1.4456e-05 deg
tp 2458490.506304355572
(2019-Jan-07.00630436)
5.1387e-05 TDB
period 1303.029689026286
3.57
8.0822e-06
2.213e-08
d
yr
n .2762791999536227 1.7137e-09 deg/d
Q 2.722108622067493 1.1256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1458  
   data-arc span      8108 days (22.20 yr)  
   first obs. used      1997-11-23  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46656  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:33:45  

Additional Information
 Earth MOID = .963778 au 
 Jupiter MOID = 2.73397 au 
 T_jup = 3.541 
[ 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 15.2   n/a MPO359339  
diameter diameter 2.623 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85520 (1997 WO2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 WO2 = 2002 CZ162 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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