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78300 (2002 PK55)
Classification: Outer Main-belt Asteroid          SPK-ID: 2078300
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01152704007582456 4.2704e-08  
a 3.21907064883377 2.584e-08 au
q 3.181964292457752 1.4658e-07 au
i 20.77087816225682 4.1776e-06 deg
node 321.2501356179781 1.329e-05 deg
peri 91.16034670630425 0.00025258 deg
M 311.3541382565834 0.00024889 deg
tp 2459285.560859075922
(2021-Mar-12.06085908)
0.0014571 TDB
period 2109.571206870851
5.78
2.5401e-05
6.954e-08
d
yr
n .1706507933116852 2.0548e-09 deg/d
Q 3.256177005209787 2.6138e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1195  
   data-arc span      8005 days (21.92 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:06:22  

Additional Information
 Earth MOID = 2.20502 au 
 Jupiter MOID = 1.8205 au 
 T_jup = 3.087 
[ 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 13.8   n/a MPO493422  
diameter diameter 9.521 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78300 (2002 PK55)          Discovered 2002-Aug-09 by LINEAR at Socorro
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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