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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2310818632238547 4.409e-08  
a 2.371018135906451 7.8485e-09 au
q 1.823118847323637 1.0494e-07 au
i 2.536358427155502 3.4913e-06 deg
node 304.507772295554 0.00011214 deg
peri 85.70281078553025 0.00011249 deg
M 68.84937510038876 7.1926e-06 deg
tp 2459141.465905883546
(2020-Oct-18.96590588)
2.6773e-05 TDB
period 1333.523706613934
3.65
6.6213e-06
1.813e-08
d
yr
n .2699614549141442 1.3404e-09 deg/d
Q 2.918917424489264 9.6621e-09 au
  Orbit Determination Parameters
   # obs. used (total)      709  
   data-arc span      9106 days (24.93 yr)  
   first obs. used      1996-02-10  
   last obs. used      2021-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48967  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:14:29  

Additional Information
 Earth MOID = .829942 au 
 Jupiter MOID = 2.53944 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 16.50   n/a E2021B10  
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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