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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458371.5 (2018-Sep-10.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01083989877605345 4.406e-08  
q 3.18815369911283 1.4913e-07 au
tp 2459252.807842791133
(2021-Feb-07.30784279)
0.001522 TDB
node 321.2919016571119 1.3296e-05 deg
peri 85.30299824381335 0.00026327 deg
i 20.75264823755264 4.1782e-06 deg
  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
 Jupiter MOID = 1.8205 au 
 T_jup = 3.087 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.941303634041117E-15 -6.475062943864461E-15 -1.94809721148411E-11 -4.950038381496631E-15 -3.292151053600643E-12 -1.511305529069452E-14
q -6.475062943864461E-15 2.223962144927652E-14 4.486225552799433E-11 1.846555727278805E-14 7.464499343825123E-12 5.050464200939196E-14
tp -1.94809721148411E-11 4.486225552799433E-11 2.316488734835792E-6 5.905569532977223E-11 4.002227673419086E-7 2.587126527702705E-10
node -4.950038381496631E-15 1.846555727278805E-14 5.905569532977223E-11 1.767747331236391E-10 -1.552163777537291E-10 3.265798034070166E-11
peri -3.292151053600643E-12 7.464499343825123E-12 4.002227673419086E-7 -1.552163777537291E-10 6.931316084853122E-8 1.365432400010738E-11
i -1.511305529069452E-14 5.050464200939196E-14 2.587126527702705E-10 3.265798034070166E-11 1.365432400010738E-11 1.745719202369844E-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 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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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