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129781 (1999 JK46)
Classification: Main-belt Asteroid          SPK-ID: 2129781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741558105926884 3.7087e-08  
a 2.235263394188381 9.0841e-09 au
q 1.845979285885339 8.5051e-08 au
i 4.542472368244685 4.8682e-06 deg
node 185.1055138792273 4.9392e-05 deg
peri 114.6086607636148 5.1589e-05 deg
M 57.20513538106576 1.3008e-05 deg
tp 2458806.534717737000
(2019-Nov-19.03471774)
4.4036e-05 TDB
period 1220.650928444305
3.34
7.4411e-06
2.037e-08
d
yr
n .2949246108048373 1.7979e-09 deg/d
Q 2.624547502491422 1.0666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      7306 days (20.00 yr)  
   first obs. used      1999-05-10  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59124  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:06:55  

Additional Information
 Earth MOID = .836211 au 
 Jupiter MOID = 2.5951 au 
 T_jup = 3.615 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO280656  

129781 (1999 JK46)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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