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295639 (2008 SF256)
Classification: Main-belt Asteroid          SPK-ID: 2295639
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06540407181741803 7.3292e-08  
a 2.797661171101276 3.6345e-08 au
q 2.614682738945766 2.1566e-07 au
i .3309961810588026 5.7195e-06 deg
node 102.7742478661536 0.0016373 deg
peri 311.6831528772481 0.0016391 deg
M 146.0249045742644 8.1649e-05 deg
tp 2458307.209051515391
(2018-Jul-07.70905152)
0.00037925 TDB
period 1709.192977609702
4.68
3.3307e-05
9.119e-08
d
yr
n .2106257191060183 4.1045e-09 deg/d
Q 2.980639603256785 3.8723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      134  
   data-arc span      9334 days (25.56 yr)  
   first obs. used      1994-10-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 18:43:34  

Additional Information
 Earth MOID = 1.62591 au 
 Jupiter MOID = 2.24521 au 
 T_jup = 3.323 
[ 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 16.9   n/a MPO418564  
diameter diameter 2.901 km 0.938 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295639 (2008 SF256)          Discovered 2008-Sep-20 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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