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117866 (2105 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117866
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1688409160469634 4.696e-08  
a 2.245448931908962 9.2509e-09 au
q 1.866325277308777 1.0814e-07 au
i 7.24640531758941 5.012e-06 deg
node 342.5160499013467 3.3978e-05 deg
peri 354.8994764651798 3.6535e-05 deg
M 286.2074501024974 1.2836e-05 deg
tp 2459252.420330448543
(2021-Feb-06.92033045)
4.425e-05 TDB
period 1229.003728526055
3.36
7.595e-06
2.079e-08
d
yr
n .2929201853860511 1.8102e-09 deg/d
Q 2.624572586509147 1.0813e-08 au
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      21816 days (59.73 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52976  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:50:52  

Additional Information
 Earth MOID = .857309 au 
 Jupiter MOID = 2.75119 au 
 T_jup = 3.602 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457109.5 (2015-Mar-28.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686061941066901 4.7037e-08  
q 1.866719010039076 1.0821e-07 au
tp 2456792.931569867169
(2014-May-15.43156987)
4.2429e-05 TDB
node 342.5491048943829 3.3964e-05 deg
peri 354.5479417429657 3.6529e-05 deg
i 7.249134300924619 5.0124e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      21816 days (59.73 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52976  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:50:52  

Additional Information
 Jupiter MOID = 2.75119 au 
 T_jup = 3.602 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.212521821905042E-15 -5.078231817129336E-15 -4.586184003382169E-14 -2.231156558870365E-14 -1.908260208064657E-14 -6.571438815573639E-15
q -5.078231817129336E-15 1.17095306909211E-14 8.860454782058065E-14 5.122810531913511E-14 4.194190747291087E-14 1.533567320597487E-14
tp -4.586184003382169E-14 8.860454782058065E-14 1.800202711927937E-9 1.261331547688863E-11 5.85714396767283E-10 -2.923351387410078E-12
node -2.231156558870365E-14 5.122810531913511E-14 1.261331547688863E-11 1.153530258977158E-9 -1.138603123242546E-9 -4.18558538027532E-12
peri -1.908260208064657E-14 4.194190747291087E-14 5.85714396767283E-10 -1.138603123242546E-9 1.334369878164845E-9 3.232582539628436E-12
i -6.571438815573639E-15 1.533567320597487E-14 -2.923351387410078E-12 -4.18558538027532E-12 3.232582539628436E-12 2.512417600283025E-11

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 16.2   n/a MPO264145  

117866 (2105 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

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