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JPL Small-Body Database Browser
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117916 (4271 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117916
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 .1626139069182044 5.2225e-08  
a 2.719715450559415 1.4139e-08 au
q 2.277451895438143 1.4544e-07 au
i 6.005520330875436 5.522e-06 deg
node 194.6710508958566 3.7433e-05 deg
peri 187.5120767053684 3.968e-05 deg
M 9.68466380044512 1.2426e-05 deg
tp 2458556.427703841605
(2019-Mar-13.92770384)
5.6428e-05 TDB
period 1638.263025330117
4.49
1.2775e-05
3.498e-08
d
yr
n .2197449337706065 1.7136e-09 deg/d
Q 3.161979005680686 1.6438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      21227 days (58.12 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58171  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:20:10  

Additional Information
 Earth MOID = 1.27983 au 
 Jupiter MOID = 2.29129 au 
 T_jup = 3.332 
[ 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 15.5   n/a MPO412804  

117916 (4271 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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