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JPL Small-Body Database Browser
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117146 (2004 PB91)
Classification: Main-belt Asteroid          SPK-ID: 2117146
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2756142042225955 5.4478e-08  
a 2.617568287257129 2.1559e-08 au
q 1.896129286766453 1.4243e-07 au
i 3.360534695842639 6.4937e-06 deg
node 157.8322694961768 8.3505e-05 deg
peri 224.1065068929546 8.4268e-05 deg
M 161.273784687062 1.8675e-05 deg
tp 2457907.542284623001
(2017-Jun-03.04228462)		 7.3167e-05 TDB
period 1546.840225891546
4.24		 1.9111e-05
5.232e-08		 d
yr
n .232732504607907 2.8753e-09 deg/d
Q 3.339007287747805 2.7502e-08 au
   Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      11519 days (31.54 yr)  
   first obs. used      1987-10-23  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5858  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:27  

Additional Information
 Earth MOID = .900077 au 
 Jupiter MOID = 2.1182 au 
 T_jup = 3.349 
[ 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 15.3   n/a MPO236845  
diameter diameter 5.945 km 0.454 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117146 (2004 PB91)          Discovered 2004-Aug-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 PB91 = 1987 UK8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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