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78231 (2002 OK15)
Classification: Main-belt Asteroid          SPK-ID: 2078231
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2059277691744882 3.9552e-08  
a 3.160123316114952 2.0298e-08 au
q 2.509366171311114 1.2932e-07 au
i 9.800797503925871 4.2353e-06 deg
node 216.4615700749399 2.8285e-05 deg
peri 153.3432539007639 3.0312e-05 deg
M 21.60329200309628 1.0421e-05 deg
tp 2458877.367723945499
(2020-Jan-28.86772395)
5.9317e-05 TDB
period 2051.891877092946
5.62
1.977e-05
5.413e-08
d
yr
n .1754478410967913 1.6904e-09 deg/d
Q 3.81088046091879 2.4478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      12879 days (35.26 yr)  
   first obs. used      1985-07-20  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54202  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:40  

Additional Information
 Earth MOID = 1.51423 au 
 Jupiter MOID = 1.69601 au 
 T_jup = 3.150 
[ 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 14.6   n/a MPO449492  
diameter diameter 8.013 km 0.465 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78231 (2002 OK15)          Discovered 2002-Jul-18 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 OK15 = 1985 OD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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