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154378 Hennessy (2002 XR115)
Classification: Main-belt Asteroid          SPK-ID: 2154378
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801899313376784 6.1296e-08  
a 2.436516485392309 2.3414e-08 AU
q 1.997480747186348 1.5209e-07 AU
i .872011778921151 1.0194e-05 deg
node 357.4837966350193 0.00035942 deg
peri 299.4569259921657 0.00036055 deg
M 260.8493051708464 2.73e-05 deg
tp 2457383.100663934853
(2015-Dec-26.60066393)
0.00010592 JED
period 1389.160602998095
3.80
2.0024e-05
5.482e-08
d
yr
n .2591493015444332 3.7355e-09 deg/d
Q 2.875552223598271 2.7633e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      289  
   data-arc span      7383 days (20.21 yr)  
   first obs. used      1995-01-07  
   last obs. used      2015-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5619  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 22:12:08  

Additional Information
 Earth MOID = .98296 AU 
 T_jup = 3.482 
[ 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 16.4 mag n/a MPO280807  

154378 Hennessy           Discovered 2002 Dec. 14 by the Sloan Digital Sky Survey at Apache Point.
Gregory Hennessy (b. 1963) is an American astronomer and a contributor to the Sloan Digital Sky Survey's astrometric pipeline.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

[ show close-approach data ]
Alternate Designations
 2002 XR115 = 1997 WY10 = 2000 KW28 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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