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59989 (1999 SL16)
Classification: Main-belt Asteroid          SPK-ID: 2059989
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098392576647981 3.5628e-08  
a 2.350603069755895 7.9705e-09 au
q 1.857354266533723 8.6222e-08 au
i 5.013233182906761 3.8524e-06 deg
node 264.4674316303092 5.2243e-05 deg
peri 1.433299406433318 5.3373e-05 deg
M 333.9903320622023 1.1411e-05 deg
tp 2459095.604196826829
(2020-Sep-03.10419683)
4.1774e-05 TDB
period 1316.337868654758
3.60
6.6952e-06
1.833e-08
d
yr
n .2734860164494887 1.391e-09 deg/d
Q 2.843851872978068 9.643e-09 au
  Orbit Determination Parameters
   # obs. used (total)      858  
   data-arc span      9103 days (24.92 yr)  
   first obs. used      1995-07-16  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:44:18  

Additional Information
 Earth MOID = .84149 au 
 Jupiter MOID = 2.24767 au 
 T_jup = 3.523 
[ 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 15.6   n/a MPO223590  
diameter diameter 1.945 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.323   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59989 (1999 SL16)          Discovered 1999-Sep-29 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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