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85805 (1998 WS6)
Classification: Main-belt Asteroid          SPK-ID: 2085805
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1436550708821381 3.8226e-08  
a 2.38727035343915 7.2246e-09 au
q 2.044326861601022 9.2181e-08 au
i .4687897630167963 3.6317e-06 deg
node 158.4552744191511 0.00048877 deg
peri 230.5419282623753 0.0004889 deg
M 323.371415414973 1.1597e-05 deg
tp 2459137.578224320873
(2020-Oct-15.07822432)
4.3546e-05 TDB
period 1347.258195056944
3.69
6.1158e-06
1.674e-08
d
yr
n .2672093599584925 1.213e-09 deg/d
Q 2.730213845277278 8.2625e-09 au
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      8981 days (24.59 yr)  
   first obs. used      1996-03-26  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52873  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:45  

Additional Information
 Earth MOID = 1.04929 au 
 Jupiter MOID = 2.70364 au 
 T_jup = 3.520 
[ 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 16.1   n/a MPO436375  
diameter diameter 3.922 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85805 (1998 WS6)          Discovered 1998-Nov-24 by Cooney Jr., W. R., Motl, P. M. at Baton Rouge
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2029-Jul-30 21:26 00:02 Amphi 0.0391347166753011 0.0391328725190487 0.0391365609690352 2.21663291345439 2.21663284718438 2462348.393008775 1.98824865480404 152.787317064714 29.9035006747542 -54.5973973389059 160847.44799343 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:47 2020-Nov-12 20:59
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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