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85690 (1998 RG56)
Classification: Main-belt Asteroid          SPK-ID: 2085690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309891434531608 4.7317e-08  
a 2.370750883859325 1.1916e-08 au
q 1.823133167855835 1.1483e-07 au
i 2.536433551963596 5.7839e-06 deg
node 304.5075985403874 0.00011945 deg
peri 85.64566170445289 0.00012018 deg
M 321.9753963667089 1.5348e-05 deg
tp 2459141.328159508500
(2020-Oct-18.82815951)
5.7483e-05 TDB
period 1333.298248470706
3.65
1.0053e-05
2.752e-08
d
yr
n .2700071048716371 2.0357e-09 deg/d
Q 2.918368599862814 1.4669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      8936 days (24.47 yr)  
   first obs. used      1996-02-10  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56961  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:58  

Additional Information
 Earth MOID = .83063 au 
 Jupiter MOID = 2.53792 au 
 T_jup = 3.507 
[ 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 16.3   n/a MPO436374  
diameter diameter 1.213 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.397   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85690 (1998 RG56)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 RG56 = 2002 XT88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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