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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309891394781486 4.7774e-08  
a 2.370750888790573 1.39e-08 au
q 1.823133181071782 1.1675e-07 au
i 2.536433516467425 5.9143e-06 deg
node 304.5075973390242 0.00012091 deg
peri 85.64566775498716 0.00012187 deg
M 321.9753890114451 1.8733e-05 deg
tp 2459141.328187188892
(2020-Oct-18.82818719)
7.0269e-05 TDB
period 1333.298252630669
3.65
1.1726e-05
3.21e-08
d
yr
n .2700071040292003 2.3746e-09 deg/d
Q 2.918368596509363 1.7111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      8570 days (23.46 yr)  
   first obs. used      1996-02-10  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:15  

Additional Information
 Earth MOID = .83063 au 
 Jupiter MOID = 2.53791 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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