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90680 (1981 DE3)
Classification: Main-belt Asteroid          SPK-ID: 2090680
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231844115610597 5.8389e-08  
a 2.612708563755811 1.3525e-08 au
q 2.29086359674901 1.4788e-07 au
i 11.39025906764869 5.2047e-06 deg
node 319.9125913495585 2.4742e-05 deg
peri 217.5731340342405 3.0693e-05 deg
M 110.3101949395901 1.8167e-05 deg
tp 2458527.840891673478
(2019-Feb-13.34089167)
7.683e-05 TDB
period 1542.534478256814
4.22
1.1978e-05
3.279e-08
d
yr
n .2333821415822281 1.8122e-09 deg/d
Q 2.934553530762612 1.5191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      14415 days (39.47 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58601  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:13:37  

Additional Information
 Earth MOID = 1.30761 au 
 Jupiter MOID = 2.09297 au 
 T_jup = 3.370 
[ 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 15.0   n/a MPO474785  
diameter diameter 3.239 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.222   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90680 (1981 DE3)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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