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85639 (1998 OU)
Classification: Main-belt Asteroid          SPK-ID: 2085639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2261748619344956 3.981e-08  
a 2.306526550974675 8.6774e-09 au
q 1.784848226759729 9.3713e-08 au
i 3.019820544256053 4.1693e-06 deg
node 198.4779216460362 8.5391e-05 deg
peri 196.7069613217188 8.589e-05 deg
M 19.05000758008282 1.0052e-05 deg
tp 2458932.793749097134
(2020-Mar-24.29374910)
3.5601e-05 TDB
period 1279.487696924359
3.50
7.2204e-06
1.977e-08
d
yr
n .2813626116650988 1.5878e-09 deg/d
Q 2.82820487518962 1.064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      8130 days (22.26 yr)  
   first obs. used      1998-07-20  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57012  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:18  

Additional Information
 Earth MOID = .791772 au 
 Jupiter MOID = 2.60228 au 
 T_jup = 3.551 
[ 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 16.0   n/a MPO417414  
diameter diameter 1.537 km 0.463 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.358   0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85639 (1998 OU)          Discovered 1998-Jul-20 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 OU = 2000 DO39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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