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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1561127486980615 4.5414e-08  
a 2.230390835681122 6.1262e-09 au
q 1.882198391651975 1.014e-07 au
i 4.591837973770296 5.3838e-06 deg
node 12.22732109065839 3.9085e-05 deg
peri 318.440058847164 4.1788e-05 deg
M 351.5182201195032 1.3712e-05 deg
tp 2459029.165160745363
(2020-Jun-28.66516075)
4.6326e-05 TDB
period 1216.661834393934
3.33
5.0127e-06
1.372e-08
d
yr
n .2958915861606934 1.2191e-09 deg/d
Q 2.578583279710268 7.0825e-09 au
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      21945 days (60.08 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50304  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:15:08  

Additional Information
 Earth MOID = .874669 au 
 Jupiter MOID = 2.76426 au 
 T_jup = 3.622 
[ 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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