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39789 (1997 OA)
Classification: Main-belt Asteroid          SPK-ID: 2039789
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06709282634915872 5.2045e-08  
a 3.195797894492737 2.7072e-08 au
q 2.981382781310529 1.7858e-07 au
i 23.27665761554712 4.6932e-06 deg
node 92.52884328659388 1.3508e-05 deg
peri 183.2579623697631 4.6234e-05 deg
M 344.2268248861769 4.6816e-05 deg
tp 2459091.929008567163
(2020-Aug-30.42900857)
0.00027164 TDB
period 2086.735412918443
5.71
2.6516e-05
7.26e-08
d
yr
n .1725182779624731 2.1922e-09 deg/d
Q 3.410213007674946 2.8889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1443  
   data-arc span      8230 days (22.53 yr)  
   first obs. used      1997-07-23  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45891  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:35:50  

Additional Information
 Earth MOID = 1.96523 au 
 Jupiter MOID = 1.72445 au 
 T_jup = 3.065 
[ 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 12.9   n/a MPO474255  
diameter diameter 17.670 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39789 (1997 OA)          Discovered 1997-Jul-23 by Williams, K. A. at Lake Clear
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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