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JPL Small-Body Database Browser
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22587 McKennon (1998 HB99)
Classification: Main-belt Asteroid          SPK-ID: 2022587
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1088616230113959 3.5628e-08  
a 2.279192901590881 1.0911e-08 au
q 2.031076263167645 8.3593e-08 au
i 6.276440758995198 5.384e-06 deg
node 200.5367216509769 3.6635e-05 deg
peri 72.63146548581307 4.8346e-05 deg
M 353.1834288415201 3.4991e-05 deg
tp 2458624.297619935862
(2019-May-20.79761994)
0.00012225 TDB
period 1256.811229242846
3.44
9.0253e-06
2.471e-08
d
yr
n .2864391975689766 2.0569e-09 deg/d
Q 2.527309540014117 1.2099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      768  
   data-arc span      12484 days (34.18 yr)  
   first obs. used      1984-03-05  
   last obs. used      2018-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58937  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:10:45  

Additional Information
 Earth MOID = 1.0253 au 
 Jupiter MOID = 2.55412 au 
 T_jup = 3.591 
[ 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 15.6   n/a MPO435911  

22587 McKennon           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Blanche McKennon mentored a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors. She teaches at the Moscow High School, Moscow, Idaho.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 HB99 = 1991 GU13 = 1991 HO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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