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171448 Guchaohao (2007 RD147)
Classification: Main-belt Asteroid          SPK-ID: 2171448
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2402983122952808 6.7307e-08  
a 2.290923305100779 2.0611e-08 AU
q 1.740418301287135 1.5082e-07 AU
i 2.838222815923829 6.541e-06 deg
node 102.1229811060818 0.00026942 deg
peri 201.2638384168398 0.00027088 deg
M 62.80791156671993 3.0247e-05 deg
tp 2456779.533669119953
(2014-May-02.03366912)
0.00010553 JED
period 1266.526415741661
3.47
1.7092e-05
4.68e-08
d
yr
n .2842419988446816 3.8358e-09 deg/d
Q 2.841428308914423 2.5563e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      5173 days (14.16 yr)  
   first obs. used      2000-08-29  
   last obs. used      2014-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .72568  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 17:03:37  

Additional Information
 Earth MOID = .726566 AU 
 T_jup = 3.558 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6 mag n/a MPO257771  

171448 Guchaohao           Discovered 2007 Sept. 11 at the XuYi Station of the Purple Mountain Observatory.
Gu Chaohao (b. 1926) is a mathematician who has made contributions to both pure and applied mathematics. Elected a member of the Chinese Academy of Sciences in 1980, he has achieved important results in the problem of supersonic flow around wings and the study of equations of fixed type in higher dimensions.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

Alternate Designations
 2007 RD147 = 2000 QD200 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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