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78383 Philmassey (2002 PM137)
Classification: Main-belt Asteroid          SPK-ID: 2078383
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06414502372480879 7.809e-08  
a 2.706807696326069 3.658e-08 AU
q 2.533179452426738 2.0933e-07 AU
i 5.164000121053303 1.0467e-05 deg
node 349.9440634995207 8.3122e-05 deg
peri 60.90707159539967 0.00011828 deg
M 202.6295757888707 8.4326e-05 deg
tp 2457711.558194232167
(2016-Nov-19.05819423)
0.00038588 JED
period 1626.614093510698
4.45
3.2974e-05
9.028e-08
d
yr
n .2213186283312086 4.4864e-09 deg/d
Q 2.8804359402254 3.8927e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      8507 days (23.29 yr)  
   first obs. used      1991-02-08  
   last obs. used      2014-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61775  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 15:43:46  

Additional Information
 Earth MOID = 1.54752 AU 
 T_jup = 3.356 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO257356  

78383 Philmassey           Discovered 2002 Aug. 15 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Philip Massey (b. 1952), an astronomer at Lowell Observatory, studies massive stars, young clusters, the initial mass function, and star formation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110615/MPCPages.arcLast Updated: 2013-03-28

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