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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07782604775593019 7.7843e-08  
a 2.795515163453509 2.1356e-08 au
q 2.57795126684015 2.2196e-07 au
i 3.350430330046483 5.1426e-06 deg
node 277.3203697192429 0.00014253 deg
peri 111.7734344986927 0.00014948 deg
M 11.7884504219595 4.0143e-05 deg
tp 2459144.595672706035
(2020-Oct-22.09567271)
0.0001906 TDB
period 1707.226743587722
4.67
1.9564e-05
5.356e-08
d
yr
n .21086829933525 2.4164e-09 deg/d
Q 3.01307906006687 2.3019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      7910 days (21.66 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-11-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59531  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:09:21  

Additional Information
 Earth MOID = 1.58402 au 
 Jupiter MOID = 2.34572 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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