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85940 (1999 DS8)
Classification: Main-belt Asteroid          SPK-ID: 2085940
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 .2575862671275441 4.8033e-08  
a 2.744566063688266 1.8664e-08 au
q 2.037603536457868 1.3187e-07 au
i 8.608749389246427 6.134e-06 deg
node 76.38011245526411 3.8677e-05 deg
peri 70.21401160847445 4.0469e-05 deg
M 241.862191440498 1.3653e-05 deg
tp 2459545.498579264592
(2021-Nov-26.99857926)
6.6528e-05 TDB
period 1660.767970284754
4.55
1.6941e-05
4.638e-08
d
yr
n .2167671862904935 2.2112e-09 deg/d
Q 3.451528590918663 2.3472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      9405 days (25.75 yr)  
   first obs. used      1993-11-21  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:41:19  

Additional Information
 Earth MOID = 1.06866 au 
 Jupiter MOID = 1.65161 au 
 T_jup = 3.284 
[ 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 15.9   n/a MPO453290  
diameter diameter 4.970 km 0.924 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85940 (1999 DS8)          Discovered 1999-Feb-18 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 DS8 = 1993 XK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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