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249213 (2008 DS87)
Classification: Main-belt Asteroid          SPK-ID: 2249213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06043206514052422 6.2562e-08  
a 2.754791389406797 1.9288e-08 au
q 2.58831365671361 1.7107e-07 au
i 4.02791602429654 4.5454e-06 deg
node 281.80681138289 9.3667e-05 deg
peri 78.81493141391765 0.00010313 deg
M 339.3788966073156 4.0474e-05 deg
tp 2458696.162318234983
(2019-Jul-31.66231823)
0.00018773 TDB
period 1670.057799953192
4.57
1.754e-05
4.802e-08
d
yr
n .2155614015335817 2.2639e-09 deg/d
Q 2.921269122099983 2.0453e-08 au
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      7971 days (21.82 yr)  
   first obs. used      1998-01-01  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56822  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:31  

Additional Information
 Earth MOID = 1.58744 au 
 Jupiter MOID = 2.37464 au 
 T_jup = 3.338 
[ 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 16.5   n/a MPO264606  
diameter diameter 3.248 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249213 (2008 DS87)          Discovered 2008-Feb-29 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 DS87 = 1998 AE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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