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JPL Small-Body Database Browser
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108957 (2001 PC31)
Classification: Main-belt Asteroid          SPK-ID: 2108957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09477503930164791 6.511e-08  
a 2.545529483633634 2.1973e-08 au
q 2.304276826778753 1.6166e-07 au
i 13.79965788686131 8.6276e-06 deg
node 253.211835582187 3.7195e-05 deg
peri 138.1871099284594 6.8909e-05 deg
M 173.320855401473 6.011e-05 deg
tp 2458286.309700133238
(2018-Jun-16.80970013)
0.00024379 TDB
period 1483.425104015782
4.06
1.9207e-05
5.259e-08
d
yr
n .2426816150174643 3.1422e-09 deg/d
Q 2.786782140488516 2.4056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      6779 days (18.56 yr)  
   first obs. used      2001-07-13  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:16:46  

Additional Information
 Earth MOID = 1.32987 au 
 Jupiter MOID = 2.60185 au 
 T_jup = 3.396 
[ 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 15.8   n/a MPO422364  

108957 (2001 PC31)          Discovered 2001-Aug-10 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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