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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06071389532365812 6.212e-08  
a 2.755673822308142 1.9032e-08 au
q 2.588366130314381 1.696e-07 au
i 4.027958723855773 4.4782e-06 deg
node 281.8051112640236 9.1998e-05 deg
peri 78.98140083929121 0.00010146 deg
M 65.4226766456177 4.0015e-05 deg
tp 2458696.855128374242
(2019-Aug-01.35512837)
0.00018583 TDB
period 1670.860310063376
4.57
1.731e-05
4.739e-08
d
yr
n .2154578679209546 2.2321e-09 deg/d
Q 2.922981514301904 2.0188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      8353 days (22.87 yr)  
   first obs. used      1998-01-01  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56157  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:12:12  

Additional Information
 Earth MOID = 1.58845 au 
 Jupiter MOID = 2.37458 au 
 T_jup = 3.337 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457057.5 (2015-Feb-04.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06204210452631443 6.3023e-08  
q 2.584330319328375 1.7241e-07 au
tp 2457016.342676189092
(2014-Dec-24.84267619)
0.00017954 TDB
node 282.0274084094718 9.2138e-05 deg
peri 76.74474039832171 0.00010086 deg
i 4.02436076132722 4.4797e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      8353 days (22.87 yr)  
   first obs. used      1998-01-01  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56157  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:12:12  

Additional Information
 Jupiter MOID = 2.37458 au 
 T_jup = 3.337 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.971953176836144E-15 -1.080839878792822E-14 -2.291609729733889E-12 -1.195270485211722E-14 -5.821317905835579E-13 -4.861850465351764E-15
q -1.080839878792822E-14 2.972418922208613E-14 5.965129736750804E-12 3.546502202184669E-14 1.519250053338219E-12 1.378982698155861E-14
tp -2.291609729733889E-12 5.965129736750804E-12 3.223620513236242E-8 -6.487579818065227E-11 7.429032762454511E-9 1.006950087068594E-12
node -1.195270485211722E-14 3.546502202184669E-14 -6.487579818065227E-11 8.489402381921845E-9 -8.482886667163935E-9 9.194822122771944E-11
peri -5.821317905835579E-13 1.519250053338219E-12 7.429032762454511E-9 -8.482886667163935E-9 1.017315175616537E-8 -9.1431721165124E-11
i -4.861850465351764E-15 1.378982698155861E-14 1.006950087068594E-12 9.194822122771944E-11 -9.1431721165124E-11 2.006792448197217E-11

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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