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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1439114631419566 6.7415e-08  
a 2.735181036717834 2.3191e-08 au
q 2.341557131765637 1.8411e-07 au
i 8.205599287705422 7.2809e-06 deg
node 318.645105069991 3.8721e-05 deg
peri 148.523139523008 4.3335e-05 deg
M 235.614266957137 2.159e-05 deg
tp 2457971.381029079306
(2017-Aug-05.88102908)
0.00010256 JED
period 1652.256777694348
4.52
2.1014e-05
5.753e-08
d
yr
n .2178838088970434 2.7711e-09 deg/d
Q 3.12880494167003 2.6529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      752  
   data-arc span      10882 days (29.79 yr)  
   first obs. used      1986-01-07  
   last obs. used      2015-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 16:28:32  

Additional Information
 Earth MOID = 1.36242 au 
 Jupiter MOID = 1.99928 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 MPO350908  

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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