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118384 (1999 JA8)
Classification: Main-belt Asteroid          SPK-ID: 2118384
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946454720869249 6.7644e-08  
a 2.377144511255611 1.1601e-08 au
q 1.91444409564342 1.6296e-07 au
i 23.42568772297224 6.298e-06 deg
node 58.41398090153188 1.328e-05 deg
peri 93.5036225966479 2.1765e-05 deg
M 316.096694139232 1.5763e-05 deg
tp 2459163.758772032444
(2020-Nov-10.25877203)
5.9101e-05 TDB
period 1338.695498650355
3.67
9.7998e-06
2.683e-08
d
yr
n .2689185108659471 1.9686e-09 deg/d
Q 2.839844926867802 1.3859e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      7598 days (20.80 yr)  
   first obs. used      1999-04-10  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53072  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:57:38  

Additional Information
 Earth MOID = 1.06853 au 
 Jupiter MOID = 2.46733 au 
 T_jup = 3.406 
[ 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 14.8   n/a MPO396013  
diameter diameter 2.334 km 0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.527   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118384 (1999 JA8)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1999 JA8 = 2001 UD84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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