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JPL Small-Body Database Browser
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66281 (1999 JY12)
Classification: Main-belt Asteroid          SPK-ID: 2066281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667757002821307 5.0918e-08  
a 2.340359356061904 1.0248e-08 au
q 1.950044285542843 1.1862e-07 au
i 8.459336145284183 5.2839e-06 deg
node 91.32846996959091 3.2145e-05 deg
peri 162.9651282345828 3.49e-05 deg
M 294.1716271985139 1.2996e-05 deg
tp 2459239.629341026527
(2021-Jan-25.12934103)
4.7382e-05 TDB
period 1307.74252964075
3.58
8.5898e-06
2.352e-08
d
yr
n .2752835453771589 1.8082e-09 deg/d
Q 2.730674426580964 1.1957e-08 au
  Orbit Determination Parameters
   # obs. used (total)      715  
   data-arc span      7575 days (20.74 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 10:48:12  

Additional Information
 Earth MOID = .936762 au 
 Jupiter MOID = 2.32522 au 
 T_jup = 3.531 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO417283  

66281 (1999 JY12)          Discovered 1999-May-14 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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