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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798226448375234 7.8859e-08  
a 2.437794495975994 2.8429e-08 AU
q 1.999423842139234 1.865e-07 AU
i .8718795664560197 1.0657e-05 deg
node 357.4884781632133 0.00038132 deg
peri 299.3054652232067 0.00038263 deg
M 209.1955038891051 3.1445e-05 deg
tp 2457382.879198253189
(2015-Dec-26.37919825)
0.00012495 JED
period 1390.253717747089
3.81
2.432e-05
6.658e-08
d
yr
n .2589455402308733 4.5297e-09 deg/d
Q 2.876165149812755 3.3542e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      6954 days (19.04 yr)  
   first obs. used      1995-01-07  
   last obs. used      2014-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57282  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 09:20:59  

Additional Information
 Earth MOID = .98296 AU 
 T_jup = 3.481 
[ 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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