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85716 (1998 SG56)
Classification: Main-belt Asteroid          SPK-ID: 2085716
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01178431186379277 5.3996e-08  
a 3.175595671116842 2.345e-08 au
q 3.13817346137509 1.7882e-07 au
i 12.23547848854688 5.7755e-06 deg
node 346.551508886768 1.8831e-05 deg
peri 341.2692570656056 0.00018528 deg
M 334.0255208639607 0.00018354 deg
tp 2459149.635342325409
(2020-Oct-27.13534233)
0.0010535 TDB
period 2066.979782576455
5.66
2.2895e-05
6.268e-08
d
yr
n .174167160721459 1.9292e-09 deg/d
Q 3.213017880858593 2.3726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1968  
   data-arc span      7997 days (21.89 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:58  

Additional Information
 Earth MOID = 2.13017 au 
 Jupiter MOID = 1.83537 au 
 T_jup = 3.165 
[ 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 13.0   n/a MPO348041  
diameter diameter 18.754 km 2.801 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.067   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85716 (1998 SG56)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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