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39686 Takeshihara (1996 PT9)
Classification: Main-belt Asteroid          SPK-ID: 2039686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08337986821128529 4.0956e-08  
a 2.795617143751757 1.3293e-08 au
q 2.562518954736526 1.1845e-07 au
i 3.916516330151721 4.3877e-06 deg
node 204.9119138988605 5.577e-05 deg
peri 170.448857645789 6.0731e-05 deg
M 276.7910445875814 2.3491e-05 deg
tp 2458995.123131623253
(2020-May-25.62313162)
0.00011187 TDB
period 1707.320163800163
4.67
1.2178e-05
3.334e-08
d
yr
n .2108567611587917 1.504e-09 deg/d
Q 3.028715332766989 1.4402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1586  
   data-arc span      17780 days (48.68 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53351  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:10:32  

Additional Information
 Earth MOID = 1.56278 au 
 Jupiter MOID = 2.39649 au 
 T_jup = 3.319 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO412461  
diameter diameter 10.164 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39686 Takeshihara           Discovered 1996 Aug. 9 by T. Okuni at Nanyo.
Takeshi Hara (b. 1981) became a member of the Yamagata Astronomical Society in 2009 and actively popularizes astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1996 PT9 = 1973 VP = 3209 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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