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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1745733016081328 4.6692e-08  
a 2.33655609622586 1.1793e-08 au
q 1.928655784115102 1.0692e-07 au
i 2.601636465173216 6.9199e-06 deg
node 358.0204331483824 0.000101 deg
peri 299.5729644225701 0.00010346 deg
M 167.0786078778717 2.5997e-05 deg
tp 2458395.046084418042
(2018-Oct-03.54608442)
9.184e-05 TDB
period 1304.556055248126
3.57
9.8765e-06
2.704e-08
d
yr
n .275955945742422 2.0892e-09 deg/d
Q 2.744456408336618 1.3852e-08 au
  Orbit Determination Parameters
   # obs. used (total)      476  
   data-arc span      8749 days (23.95 yr)  
   first obs. used      1996-02-14  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:33:10  

Additional Information
 Earth MOID = .914522 au 
 Jupiter MOID = 2.46239 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 16.6   n/a MPO400789  
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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