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JPL Small-Body Database Browser
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66270 (1999 JK4)
Classification: Main-belt Asteroid          SPK-ID: 2066270
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2549235738678817 4.7518e-08  
a 2.303018504029075 1.2227e-08 au
q 1.715924796298121 1.0862e-07 au
i 22.61363962069599 5.8953e-06 deg
node 224.4635193790565 1.2785e-05 deg
peri 142.7011771285524 1.6929e-05 deg
M 248.8961466938557 1.5119e-05 deg
tp 2459394.477290058985
(2021-Jun-28.97729006)
5.5273e-05 TDB
period 1276.569805643196
3.50
1.0166e-05
2.783e-08
d
yr
n .2820057300498464 2.2458e-09 deg/d
Q 2.890112211760029 1.5344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      865  
   data-arc span      7571 days (20.73 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:53:59  

Additional Information
 Earth MOID = .756411 au 
 Jupiter MOID = 2.67333 au 
 T_jup = 3.447 
[ 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 14.5   n/a MPO351309  
diameter diameter 2.619 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.384   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66270 (1999 JK4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JK4 = 2000 RL53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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