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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06071390025320205 6.2224e-08  
a 2.755673820358649 1.9082e-08 au
q 2.588366114899034 1.6997e-07 au
i 4.027958740922335 4.4786e-06 deg
node 281.8051055664602 9.2514e-05 deg
peri 78.98141046087858 0.00010196 deg
M 65.4226735682446 4.0068e-05 deg
tp 2458696.855142979407
(2019-Aug-01.35514298)
0.00018609 TDB
period 1670.860308290308
4.57
1.7355e-05
4.752e-08
d
yr
n .2154578681495921 2.238e-09 deg/d
Q 2.922981525818265 2.0241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      8062 days (22.07 yr)  
   first obs. used      1998-01-01  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:20:35  

Additional Information
 Earth MOID = 1.58845 au 
 Jupiter MOID = 2.37458 au 
 T_jup = 3.337 
[ 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 16.3   n/a MPO494359  
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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