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249905 (2001 SK91)
Classification: Main-belt Asteroid          SPK-ID: 2249905
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07775143109835402 8.0982e-08  
a 2.795355576143662 3.2385e-08 au
q 2.578012679669729 2.3749e-07 au
i 3.350436262314027 7.4557e-06 deg
node 277.3190348813457 0.00014884 deg
peri 111.6916197633321 0.0001573 deg
M 329.6825259058815 5.1741e-05 deg
tp 2459144.262140305439
(2020-Oct-21.76214031)
0.00024607 TDB
period 1707.080555236568
4.67
2.9665e-05
8.122e-08
d
yr
n .2108863573518421 3.6647e-09 deg/d
Q 3.012698472617596 3.4903e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      1999-03-20  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63148  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:14:47  

Additional Information
 Earth MOID = 1.58529 au 
 Jupiter MOID = 2.3463 au 
 T_jup = 3.320 
[ 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 16.5   n/a MPO440261  
diameter diameter 2.890 km 0.931 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249905 (2001 SK91)          Discovered 2001-Sep-20 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

Alternate Designations
 2001 SK91 = 1999 FP65 = 2006 UU221 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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