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85748 (1998 SK138)
Classification: Main-belt Asteroid          SPK-ID: 2085748
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2176318636143144 3.9155e-08  
a 2.37316183608185 6.5992e-09 au
q 1.856686203036989 9.254e-08 au
i 2.678781087009507 4.2254e-06 deg
node 17.15776970630982 6.6907e-05 deg
peri 8.601171888297916 6.7334e-05 deg
M 76.19608033731551 6.6232e-06 deg
tp 2459113.869133119034
(2020-Sep-21.36913312)
2.4516e-05 TDB
period 1335.33262638602
3.66
5.5698e-06
1.525e-08
d
yr
n .2695957493185153 1.1245e-09 deg/d
Q 2.889637469126712 8.0353e-09 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      8181 days (22.40 yr)  
   first obs. used      1998-09-18  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:14:47  

Additional Information
 Earth MOID = .860118 au 
 Jupiter MOID = 2.56746 au 
 T_jup = 3.509 
[ 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 16.30   n/a E2021B10  
diameter diameter 1.664 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85748 (1998 SK138)          Discovered 1998-Sep-26 by LINEAR at Socorro
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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