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91549 (1999 RU210)
Classification: Main-belt Asteroid          SPK-ID: 2091549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2042900249216379 3.4304e-08  
a 2.86472661164279 1.9927e-08 au
q 2.279491540756605 1.0074e-07 au
i 14.36759660823504 6.1491e-06 deg
node 236.6698136088814 1.6789e-05 deg
peri 249.0199165775715 2.4805e-05 deg
M 7.367897225695851 1.5978e-05 deg
tp 2458964.253651729433
(2020-Apr-24.75365173)
7.8511e-05 TDB
period 1771.018918653804
4.85
1.8479e-05
5.059e-08
d
yr
n .2032728144280045 2.1209e-09 deg/d
Q 3.449961682528975 2.3998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      998  
   data-arc span      7452 days (20.40 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47905  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:33:11  

Additional Information
 Earth MOID = 1.33987 au 
 Jupiter MOID = 1.93738 au 
 T_jup = 3.224 
[ 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 14.4   n/a MPO453355  
diameter diameter 8.370 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91549 (1999 RU210)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RU210 = 2001 FC165 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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