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JPL Small-Body Database Browser
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117954 (6686 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117954
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563798626481558 4.6963e-08  
a 2.22984568050527 1.001e-08 au
q 1.881142719261273 1.0643e-07 au
i 4.592898059106743 5.6473e-06 deg
node 12.25966464471293 5.694e-05 deg
peri 318.5881386291967 6.0546e-05 deg
M 233.0010419908591 2.5099e-05 deg
tp 2459029.550385019070
(2020-Jun-29.05038502)
8.6546e-05 TDB
period 1216.215794429966
3.33
8.1897e-06
2.242e-08
d
yr
n .2960001026534358 1.9932e-09 deg/d
Q 2.578548641749268 1.1575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      566  
   data-arc span      21403 days (58.60 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55187  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:01:56  

Additional Information
 Earth MOID = .872741 au 
 Jupiter MOID = 2.7626 au 
 T_jup = 3.623 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO436566  
diameter diameter 1.327 km 0.414 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.303   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117954 (6686 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 6686 P-L = 2000 QA140 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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