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31671 Masatoshi (1999 JY7)
Classification: Main-belt Asteroid          SPK-ID: 2031671
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1958829890531858 5.1078e-08  
a 3.000387303856774 3.2467e-08 AU
q 2.41266247046008 1.628e-07 AU
i 2.063021920589067 8.1391e-06 deg
node 328.6541524177322 0.00016509 deg
peri 292.8879977505534 0.00016658 deg
M 335.6749227562613 2.281e-05 deg
tp 2457128.767353081547
(2015-Apr-16.26735308)
0.0001212 JED
period 1898.298066915399
5.20
3.0812e-05
8.436e-08
d
yr
n .1896435582347586 3.0782e-09 deg/d
Q 3.588112137253467 3.8827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      6790 days (18.59 yr)  
   first obs. used      1995-09-19  
   last obs. used      2014-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55139  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 15:05:41  

Additional Information
 Earth MOID = 1.39966 AU 
 T_jup = 3.223 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO247622  

31671 Masatoshi           Discovered 1999 May 13 by A. Nakamura at Kuma Kogen.
Masatoshi Nakamura (b. 1951), born in Miyagi prefecture, is an actor and singer. Since successfully auditioning for the hero in Warera Seishun in 1974, he has appeared in a number of movies and television dramas. As a singer, he has released more than 50 records, including his greatest hit "Fureai".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030501/MPCPages.arcLast Updated: 2003-10-02

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