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JPL Small-Body Database Browser
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59993 (1999 SL20)
Classification: Main-belt Asteroid          SPK-ID: 2059993
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479204537080629 5.1066e-08  
a 3.119995129329681 2.4054e-08 au
q 2.658484034232288 1.5774e-07 au
i 14.65361374481429 5.3589e-06 deg
node 83.40221118146493 1.906e-05 deg
peri 301.3260559050879 2.5675e-05 deg
M 192.2230701376699 2.0515e-05 deg
tp 2459538.621400349871
(2021-Nov-20.12140035)
0.00012093 TDB
period 2012.932912785289
5.51
2.3279e-05
6.373e-08
d
yr
n .1788435162013766 2.0683e-09 deg/d
Q 3.581506224427073 2.7613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      7180 days (19.66 yr)  
   first obs. used      1999-09-13  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:25  

Additional Information
 Earth MOID = 1.698 au 
 Jupiter MOID = 1.93264 au 
 T_jup = 3.150 
[ 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 13.5   n/a MPO474480  
diameter diameter 13.307 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.000 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59993 (1999 SL20)          Discovered 1999-Sep-30 by LINEAR at Socorro
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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