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85720 (1998 SK60)
Classification: Main-belt Asteroid          SPK-ID: 2085720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3137682198930016 5.2024e-08  
a 2.559067078973469 1.6792e-08 au
q 1.75611315701718 1.3034e-07 au
i 5.729929143892946 5.5494e-06 deg
node 12.16185124605887 5.1374e-05 deg
peri 351.0547075480919 5.2592e-05 deg
M 11.12462051296905 1.9632e-05 deg
tp 2458554.293440128748
(2019-Mar-11.79344013)
8.1136e-05 TDB
period 1495.274516039296
4.09
1.4717e-05
4.029e-08
d
yr
n .2407584668489991 2.3697e-09 deg/d
Q 3.362021000929758 2.2061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      7754 days (21.23 yr)  
   first obs. used      1998-08-04  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5853  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:13:52  

Additional Information
 Earth MOID = .753393 au 
 Jupiter MOID = 2.09264 au 
 T_jup = 3.358 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO453288  
diameter diameter 2.777 km 0.768 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.174   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

85720 (1998 SK60)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 SK60 = 2002 PM97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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