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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0638064035420124 6.905e-08  
a 2.707338672499934 3.4428e-08 au
q 2.534593128637507 1.906e-07 au
i 5.163893913528074 9.7843e-06 deg
node 349.9389473949556 8.006e-05 deg
peri 60.74096081490733 0.00011432 deg
M 335.5332428570846 8.4118e-05 deg
tp 2457711.082452539631
(2016-Nov-18.58245254)
0.00038112 JED
period 1627.092739823697
4.45
3.1036e-05
8.497e-08
d
yr
n .221253522426145 4.2203e-09 deg/d
Q 2.880084216362361 3.6624e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      8988 days (24.61 yr)  
   first obs. used      1991-02-08  
   last obs. used      2015-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62035  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 04:15:05  

Additional Information
 Earth MOID = 1.54767 au 
 Jupiter MOID = 2.352 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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