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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1805378677434657 3.1271e-08  
a 2.436089781062901 1.1837e-08 au
q 1.996283326358159 7.916e-08 au
i .8714289670196572 4.5134e-06 deg
node 357.4007866400361 0.00029098 deg
peri 299.2631323894152 0.00029143 deg
M 59.45031675154198 1.4968e-05 deg
tp 2458771.154599944022
(2019-Oct-14.65459994)
5.785e-05 TDB
period 1388.795695827987
3.80
1.0123e-05
2.772e-08
d
yr
n .2592173932288661 1.8894e-09 deg/d
Q 2.875896235767643 1.3974e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      8991 days (24.62 yr)  
   first obs. used      1995-01-07  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53582  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:25  

Additional Information
 Earth MOID = .980566 au 
 Jupiter MOID = 2.32641 au 
 T_jup = 3.482 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO436780  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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