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JPL Small-Body Database Browser
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59581 (1999 JD54)
Classification: Main-belt Asteroid          SPK-ID: 2059581
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 .1240630919976089 5.3641e-08  
a 2.616590886004031 1.3998e-08 au
q 2.291968530193608 1.4024e-07 au
i 12.66549427480676 6.0467e-06 deg
node 231.9162804613887 1.8958e-05 deg
peri 14.88997440546234 2.5581e-05 deg
M 342.3018061547604 1.6373e-05 deg
tp 2459076.502628121751
(2020-Aug-15.00262812)
7.0417e-05 TDB
period 1545.973920451193
4.23
1.2405e-05
3.396e-08
d
yr
n .2328629191202229 1.8686e-09 deg/d
Q 2.941213241814455 1.5734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1020  
   data-arc span      7563 days (20.71 yr)  
   first obs. used      1999-05-10  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54197  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:50:12  

Additional Information
 Earth MOID = 1.28124 au 
 Jupiter MOID = 2.07914 au 
 T_jup = 3.362 
[ 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 MPO385198  
diameter diameter 3.945 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.216   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59581 (1999 JD54)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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