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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1803768601740692 5.328e-08  
a 2.436553331886737 2.1487e-08 au
q 1.99705549223434 1.3686e-07 au
i .8719249964480885 8.927e-06 deg
node 357.4834696382504 0.00034396 deg
peri 299.4839846436692 0.00034507 deg
M 4.501350432642152 2.4958e-05 deg
tp 2457383.129887426020
(2015-Dec-26.62988743)
9.6317e-05 JED
period 1389.192114723281
3.80
1.8376e-05
5.031e-08
d
yr
n .259143423133891 3.4279e-09 deg/d
Q 2.876051171539133 2.5362e-08 au
  Orbit Determination Parameters
   # obs. used (total)      343  
   data-arc span      7526 days (20.61 yr)  
   first obs. used      1995-01-07  
   last obs. used      2015-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54931  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 18:12:36  

Additional Information
 Earth MOID = .979546 au 
 Jupiter MOID = 2.31776 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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