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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2576789749817406 4.1553e-08  
a 2.74559291603986 1.6375e-08 au
q 2.03811134771758 1.1774e-07 au
i 8.607905312336648 5.2436e-06 deg
node 76.38310065063888 3.3095e-05 deg
peri 70.13426966627526 3.4974e-05 deg
M 327.7691380953302 1.4111e-05 deg
tp 2459545.272295463443
(2021-Nov-26.77229546)
6.6055e-05 TDB
period 1661.700097417488
4.55
1.4866e-05
4.07e-08
d
yr
n .2166455911987306 1.9382e-09 deg/d
Q 3.453074484362139 2.0595e-08 au
  Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      9914 days (27.14 yr)  
   first obs. used      1993-11-21  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50898  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:15:55  

Additional Information
 Earth MOID = 1.06983 au 
 Jupiter MOID = 1.64934 au 
 T_jup = 3.283 
[ 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 16.02   n/a MPCxxxxx  
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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