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JPL Small-Body Database Browser
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117912 (4171 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117912
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605690987658525 4.4236e-08  
a 2.28268680792992 9.6532e-09 au
q 1.916157844415912 1.0455e-07 au
i 3.330474521563702 4.2736e-06 deg
node 246.5858501089254 8.0556e-05 deg
peri 101.2208580999925 8.2064e-05 deg
M 6.097315291996996 1.4464e-05 deg
tp 2458579.164438717113
(2019-Apr-05.66443872)
5.0568e-05 TDB
period 1259.702294208191
3.45
7.9907e-06
2.188e-08
d
yr
n .2857818086504991 1.8128e-09 deg/d
Q 2.649215771443928 1.1203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      21622 days (59.20 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55514  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:50:13  

Additional Information
 Earth MOID = .912018 au 
 Jupiter MOID = 2.76636 au 
 T_jup = 3.585 
[ 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 16.6   n/a MPO417614  

117912 (4171 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 ]
Alternate Designations
 4171 P-L = 2004 KD12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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