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13221 Nao (1997 OY)
Classification: Main-belt Asteroid          SPK-ID: 2013221
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442701139435949 7.5639e-08  
a 2.734194100365364 2.8395e-08 AU
q 2.339731605961748 2.0838e-07 AU
i 8.205891404263994 8.5669e-06 deg
node 318.6489268861122 5.2531e-05 deg
peri 148.4077123221597 6.0717e-05 deg
M 104.9913244657803 2.8206e-05 deg
tp 2456318.892376020751
(2013-Jan-26.39237602)
0.00012895 JED
period 1651.362581763018
4.52
2.5725e-05
7.043e-08
d
yr
n .2180017907488608 3.396e-09 deg/d
Q 3.128656594768981 3.2492e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      10318 days (28.25 yr)  
   first obs. used      1986-01-07  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55584  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:03:32  

Additional Information
 Earth MOID = 1.36047 AU 
 T_jup = 3.323 
[ 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 13.4 mag n/a MPO263467  

13221 Nao           Discovered 1997 July 24 by A. Nakamura at Kuma Kogen.
Naomi Nakamura (b. 1965), whose nickname is Nao, is the wife of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1997 OY = 1986 AP 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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