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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166770414878885 4.6006e-08  
a 2.340162664533787 9.5563e-09 au
q 1.94989276608541 1.0843e-07 au
i 8.45935836132683 4.6966e-06 deg
node 91.32719412376265 2.9769e-05 deg
peri 163.0061369916066 3.2466e-05 deg
M 349.1994315983732 1.2738e-05 deg
tp 2459239.729394703892
(2021-Jan-25.22939470)
4.6316e-05 TDB
period 1307.577672604146
3.58
8.0095e-06
2.193e-08
d
yr
n .2753182526304774 1.6864e-09 deg/d
Q 2.730432562982164 1.115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      7702 days (21.09 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:49  

Additional Information
 Earth MOID = .93495 au 
 Jupiter MOID = 2.32451 au 
 T_jup = 3.532 
[ 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 15.54   n/a E2021B10  

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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