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JPL Small-Body Database Browser
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117918 (4320 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117918
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .118747073518752 5.0611e-08  
a 3.042405788788802 3.4748e-08 au
q 2.681129004913621 1.5784e-07 au
i 14.57164910391707 6.7611e-06 deg
node 2.161344518002066 1.6486e-05 deg
peri 40.07721580514355 3.2508e-05 deg
M 344.1729003139995 2.7521e-05 deg
tp 2458685.716358527457
(2019-Jul-21.21635853)
0.00014881 TDB
period 1938.314010685097
5.31
3.3207e-05
9.092e-08
d
yr
n .1857284206869856 3.1819e-09 deg/d
Q 3.403682572663982 3.8874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      21173 days (57.97 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-09-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55607  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:37:23  

Additional Information
 Earth MOID = 1.70332 au 
 Jupiter MOID = 2.13125 au 
 T_jup = 3.180 
[ 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 15.2   n/a MPO453650  
diameter diameter 5.814 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117918 (4320 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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