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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442701180908099 7.6141e-08  
a 2.734194099125268 2.8499e-08 AU
q 2.33973159356127 2.0998e-07 AU
i 8.205892589418159 8.6144e-06 deg
node 318.6489260705858 5.2535e-05 deg
peri 148.4077149420861 6.0817e-05 deg
M 104.9913233592314 2.8277e-05 deg
tp 2456318.892381424272
(2013-Jan-26.39238142)
0.00012932 JED
period 1651.362580639552
4.52
2.5819e-05
7.069e-08
d
yr
n .2180017908971733 3.4085e-09 deg/d
Q 3.128656604689266 3.2611e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      10275 days (28.13 yr)  
   first obs. used      1986-01-07  
   last obs. used      2014-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55472  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:01:32  

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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