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JPL Small-Body Database Browser
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20558 (1999 RN117)
Classification: Main-belt Asteroid          SPK-ID: 2020558
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656217052581437 4.6404e-08  
a 2.779977301230475 1.5934e-08 au
q 2.319552720021752 1.2789e-07 au
i 7.742006137366668 4.1604e-06 deg
node 250.7480340975581 3.6791e-05 deg
peri 92.48657918492368 3.8845e-05 deg
M 75.57462175084953 1.2302e-05 deg
tp 2458245.086611993857
(2018-May-06.58661199)		 5.729e-05 TDB
period 1693.013034243511
4.64		 1.4556e-05
3.985e-08		 d
yr
n .2126386464359732 1.8282e-09 deg/d
Q 3.240401882439199 1.8573e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      10673 days (29.22 yr)  
   first obs. used      1990-09-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47349  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:47  

Additional Information
 Earth MOID = 1.32696 au 
 Jupiter MOID = 2.22932 au 
 T_jup = 3.300 
[ 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 13.6   n/a MPO324499  
diameter diameter 5.186 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.314   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20558 (1999 RN117)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RN117 = 1990 SA12 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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