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249260 (2008 SQ68)
Classification: Main-belt Asteroid          SPK-ID: 2249260
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1033906583544769 6.529e-08  
a 2.66037751779657 2.7031e-08 au
q 2.385319334760133 1.6922e-07 au
i 4.611752903496589 5.8003e-06 deg
node 308.7924359914652 8.3563e-05 deg
peri 19.62642192154062 9.023e-05 deg
M 284.2405194725589 3.8097e-05 deg
tp 2459334.039918113782
(2021-Apr-29.53991811)
0.00017032 TDB
period 1584.941840743867
4.34
2.4156e-05
6.614e-08
d
yr
n .227137672024003 3.4618e-09 deg/d
Q 2.935435700833006 2.9826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      248  
   data-arc span      8397 days (22.99 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:10  

Additional Information
 Earth MOID = 1.37436 au 
 Jupiter MOID = 2.35838 au 
 T_jup = 3.374 
[ show covariance matrix ]

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 16.1   n/a MPO245566  
diameter diameter 3.568 km 0.549 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249260 (2008 SQ68)          Discovered 2008-Sep-21 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 SQ68 = 2004 WM6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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