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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2751508038890513 4.7332e-08  
a 2.619003169172091 1.9025e-08 au
q 1.898382341786417 1.2766e-07 au
i 3.360042044700659 5.1796e-06 deg
node 157.8082762547882 8.1591e-05 deg
peri 224.0232673262517 8.235e-05 deg
M 254.4773734164035 1.8725e-05 deg
tp 2459454.280213182922
(2021-Aug-27.78021318)
8.4792e-05 TDB
period 1548.112305718955
4.24
1.6869e-05
4.618e-08
d
yr
n .232541268918351 2.5338e-09 deg/d
Q 3.339623996557765 2.426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      11926 days (32.65 yr)  
   first obs. used      1987-10-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58326  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:49:22  

Additional Information
 Earth MOID = .903041 au 
 Jupiter MOID = 2.12062 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1972-Aug-21 05:59 00:08 Psych 0.0201716605193188 0.0201678259061153 0.0201754953561582 1.47321427388308 1.47321386674132 2441550.749350653 8.4790265454225 220.569024418088 62.5179608146652 31.8890699028766 27835.6868432264 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 01:49:39 2020-Jun-24 01:49
2113-Feb-20 01:53 00:23 Psych 0.00516206398827398 0.00515594438759261 0.00516819463479181 1.47636440952525 1.47636282194223 2492867.578160362 22.5686094771285 491.367920048688 76.6739223003291 52.7917208448612 8023.50296492665 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 01:49:39 2020-Jun-24 01:49
2119-Dec-09 07:33 00:03 Eunom 0.0432991321120653 0.0432867899847893 0.0433114851122307 4.8987287229499 4.89872865676921 2495350.814644854 2.62029634543009 1245.13861177703 30.0881857223606 60.4167392493419 187103.24529004 T 17 CATAB v2.0f-lin.ifort 2020-Jun-24 01:49:39 2020-Jun-24 01:49

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