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85491 (1997 SL11)
Classification: Main-belt Asteroid          SPK-ID: 2085491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1746212802814716 4.1072e-08  
a 2.336122312876164 1.0731e-08 au
q 1.928185643707616 9.5611e-08 au
i 2.601976121577125 6.4379e-06 deg
node 358.0145605847596 8.125e-05 deg
peri 299.6716584782564 8.427e-05 deg
M 276.2522214058611 2.6382e-05 deg
tp 2459699.897912651403
(2022-Apr-30.39791265)
9.6821e-05 TDB
period 1304.192784429855
3.57
8.986e-06
2.46e-08
d
yr
n .2760328107146972 1.9019e-09 deg/d
Q 2.744058982044713 1.2605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      536  
   data-arc span      9220 days (25.24 yr)  
   first obs. used      1996-02-14  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:15  

Additional Information
 Earth MOID = .913608 au 
 Jupiter MOID = 2.46149 au 
 T_jup = 3.545 
[ 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 16.63   n/a MPCxxxxx  
diameter diameter 2.560 km 0.818 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.068   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85491 (1997 SL11)          Discovered 1997-Sep-27 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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