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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699422514445484 4.9249e-08  
a 3.200883233526067 2.0468e-08 au
q 2.656917930209541 1.5614e-07 au
i 4.680222138198428 5.5304e-06 deg
node 205.144604582291 4.5586e-05 deg
peri 189.2841410636673 4.8387e-05 deg
M 10.03681142056323 1.2811e-05 deg
tp 2459142.182830351571
(2020-Oct-19.68283035)		 7.4634e-05 TDB
period 2091.718195523909
5.73		 2.0063e-05
5.493e-08		 d
yr
n .1721073138677897 1.6508e-09 deg/d
Q 3.744848536842594 2.3946e-08 au
   Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      10732 days (29.38 yr)  
   first obs. used      1991-09-15  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:35:50  

Additional Information
 Earth MOID = 1.66245 au 
 Jupiter MOID = 1.68926 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 15.13   n/a E2021B10  
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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