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78250 (2002 PE9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2078250
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698073034111667 4.9405e-08  
a 3.200419630961322 2.1551e-08 au
q 2.656965003643619 1.5698e-07 au
i 4.680471009461509 5.7493e-06 deg
node 205.1445492739623 5.2978e-05 deg
peri 189.2524305376605 5.5452e-05 deg
M 335.6316370215948 1.374e-05 deg
tp 2459142.057430097803
(2020-Oct-19.55743010)
7.9504e-05 TDB
period 2091.263778382227
5.73
2.1124e-05
5.783e-08
d
yr
n .172144711595632 1.7388e-09 deg/d
Q 3.743874258279026 2.5211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      617  
   data-arc span      10634 days (29.11 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46269  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:35  

Additional Information
 Earth MOID = 1.6636 au 
 Jupiter MOID = 1.68919 au 
 T_jup = 3.166 
[ 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 15.0   n/a MPO449492  
diameter diameter 5.933 km 0.357 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78250 (2002 PE9)          Discovered 2002-Aug-05 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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