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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204090701009051 2.9956e-08  
a 2.863624340196246 1.6941e-08 au
q 2.279185241179013 8.3936e-08 au
i 14.36907427294178 5.99e-06 deg
node 236.6624993809817 1.4339e-05 deg
peri 248.9444523804201 2.2497e-05 deg
M 87.97240910706229 1.5805e-05 deg
tp 2458963.969757156553
(2020-Apr-24.46975716)
7.6477e-05 TDB
period 1769.996854742731
4.85
1.5707e-05
4.3e-08
d
yr
n .2033901919290845 1.8049e-09 deg/d
Q 3.44806343921348 2.0398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      7951 days (21.77 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:56:16  

Additional Information
 Earth MOID = 1.33993 au 
 Jupiter MOID = 1.939 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 14.53   n/a MPO637244  
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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