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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2261359704956111 4.0638e-08  
a 2.307210275607449 8.9246e-09 au
q 1.785467040795512 9.5774e-08 au
i 3.019794011804572 4.2363e-06 deg
node 198.4916860663258 8.5477e-05 deg
peri 196.5946739579245 8.5977e-05 deg
M 266.6042712659518 9.8476e-06 deg
tp 2458932.588401017569
(2020-Mar-24.08840102)
3.56e-05 TDB
period 1280.056657695323
3.50
7.4272e-06
2.033e-08
d
yr
n .2812375513503924 1.6318e-09 deg/d
Q 2.828953510419387 1.0943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      7774 days (21.28 yr)  
   first obs. used      1998-07-20  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56794  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:13:10  

Additional Information
 Earth MOID = .791724 au 
 Jupiter MOID = 2.59976 au 
 T_jup = 3.551 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456923.5 (2014-Sep-23.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2275345536791381 4.0759e-08  
q 1.781079041122566 9.6197e-08 au
tp 2456372.743242121313
(2013-Mar-21.24324212)
3.318e-05 TDB
node 198.5418495087824 8.5354e-05 deg
peri 196.3376830063609 8.5844e-05 deg
i 3.021784622581668 4.2421e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      7774 days (21.28 yr)  
   first obs. used      1998-07-20  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56794  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:13:10  

Additional Information
 Jupiter MOID = 2.59976 au 
 T_jup = 3.551 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.66132101080661E-15 -3.911756705466094E-15 2.855622254494859E-13 3.201481347008862E-14 6.873186546904611E-15 -1.768794182546966E-15
q -3.911756705466094E-15 9.253779875065455E-15 -6.783785778610841E-13 -7.519265522159329E-14 -1.339997381549224E-14 4.275502269032877E-15
tp 2.855622254494859E-13 -6.783785778610841E-13 1.100909823029929E-9 9.999398838499412E-12 3.177844823807694E-10 -6.720054812074328E-13
node 3.201481347008862E-14 -7.519265522159329E-14 9.999398838499412E-12 7.285339328798672E-9 -7.272423005566526E-9 2.100419202730717E-11
peri 6.873186546904611E-15 -1.339997381549224E-14 3.177844823807694E-10 -7.272423005566526E-9 7.36925526071023E-9 -2.111590135197376E-11
i -1.768794182546966E-15 4.275502269032877E-15 -6.720054812074328E-13 2.100419202730717E-11 -2.111590135197376E-11 1.799573849335005E-11

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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