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91501 (1999 RW147)
Classification: Main-belt Asteroid          SPK-ID: 2091501
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301356199080046 6.0699e-08  
a 2.783264338917979 1.6082e-08 au
q 2.142736074913247 1.657e-07 au
i 7.92076099415161 5.6593e-06 deg
node 193.5953589813493 3.2915e-05 deg
peri 182.8902736769651 3.4372e-05 deg
M 144.0080829627988 9.9632e-06 deg
tp 2458322.055262785874
(2018-Jul-22.55526279)
4.4928e-05 TDB
period 1696.016642761498
4.64
1.47e-05
4.025e-08
d
yr
n .2122620680265488 1.8397e-09 deg/d
Q 3.42379260292271 1.9783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      15803 days (43.27 yr)  
   first obs. used      1976-10-22  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53551  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:31:54  

Additional Information
 Earth MOID = 1.14427 au 
 Jupiter MOID = 2.03899 au 
 T_jup = 3.279 
[ 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 15.8   n/a MPO468901  
diameter diameter 4.601 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.033   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91501 (1999 RW147)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RW147 = 1976 US17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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