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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098392575537542 3.5626e-08  
a 2.350603069639119 7.9573e-09 au
q 1.857354266702471 8.6218e-08 au
i 5.013233183859565 3.8518e-06 deg
node 264.4674328714274 5.1804e-05 deg
peri 1.433297985232015 5.2946e-05 deg
M 333.9903323164483 1.1344e-05 deg
tp 2459095.604195890093
(2020-Sep-03.10419589)		 4.1527e-05 TDB
period 1316.337868556666
3.60		 6.6842e-06
1.83e-08		 d
yr
n .2734860164698686 1.3887e-09 deg/d
Q 2.843851872575767 9.6271e-09 au
   Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      9137 days (25.02 yr)  
   first obs. used      1995-07-16  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:44:16  

Additional Information
 Earth MOID = .84149 au 
 Jupiter MOID = 2.24767 au 
 T_jup = 3.523 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457155.5 (2015-May-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2103485335807072 3.5587e-08  
q 1.855909047265216 8.6165e-08 au
tp 2457778.117438932507
(2017-Jan-24.61743893)		 4.1166e-05 TDB
node 264.5522719075952 5.1786e-05 deg
peri 1.248337116873176 5.2918e-05 deg
i 5.014900208933512 3.8517e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      9137 days (25.02 yr)  
   first obs. used      1995-07-16  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:44:16  

Additional Information
 Jupiter MOID = 2.24767 au 
 T_jup = 3.523 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.266400968641749E-15 -3.059214680473482E-15 -4.394245757967139E-13 -1.572882040367956E-14 -7.068010780982032E-14 -1.215837540603445E-15
q -3.059214680473482E-15 7.424369215757357E-15 1.020663654246148E-12 3.879116785553042E-14 1.549239495892893E-13 3.020099443991941E-15
tp -4.394245757967139E-13 1.020663654246148E-12 1.694616003947899E-9 2.174287517280717E-11 4.671834005187443E-10 1.26515774349471E-12
node -1.572882040367956E-14 3.879116785553042E-14 2.174287517280717E-11 2.68180141789261E-9 -2.665454247273632E-9 -5.83789448074506E-11
peri -7.068010780982032E-14 1.549239495892893E-13 4.671834005187443E-10 -2.665454247273632E-9 2.800324450339108E-9 5.846283769522053E-11
i -1.215837540603445E-15 3.020099443991941E-15 1.26515774349471E-12 -5.83789448074506E-11 5.846283769522053E-11 1.483536215069353E-11

[ 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

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