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JPL Small-Body Database Browser
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59504 (1999 JY9)
Classification: Main-belt Asteroid          SPK-ID: 2059504
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05271721253793371 3.5512e-08  
a 3.101274129076586 2.4556e-08 au
q 2.937783601675661 1.1188e-07 au
i 10.56818731014673 4.1081e-06 deg
node 101.9587035144923 3.3131e-05 deg
peri 177.6645458097012 7.1603e-05 deg
M 256.6426540033638 6.5492e-05 deg
tp 2459573.226804855590
(2021-Dec-24.72680486)
0.00036418 TDB
period 1994.842725109472
5.46
2.3693e-05
6.487e-08
d
yr
n .180465354721257 2.1434e-09 deg/d
Q 3.264764656477512 2.585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      874  
   data-arc span      7625 days (20.88 yr)  
   first obs. used      1999-03-22  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:48:28  

Additional Information
 Earth MOID = 1.92135 au 
 Jupiter MOID = 1.85319 au 
 T_jup = 3.194 
[ 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 14.0   n/a MPO257254  
diameter diameter 5.431 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

59504 (1999 JY9)          Discovered 1999-May-08 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

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