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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804734090590208 5.3263e-08  
a 2.43675021567368 2.1553e-08 au
q 1.996981597225747 1.3686e-07 au
i .8718266174220555 8.9272e-06 deg
node 357.4848290186204 0.00034399 deg
peri 299.4738500580114 0.0003451 deg
M 56.3272972497969 2.4936e-05 deg
tp 2457383.114106384527
(2015-Dec-26.61410638)
9.6279e-05 JED
period 1389.360496998684
3.80
1.8433e-05
5.047e-08
d
yr
n .2591120164836103 3.4377e-09 deg/d
Q 2.876518834121613 2.5442e-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 = .980947 au 
 Jupiter MOID = 2.31857 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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