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JPL Small-Body Database Browser
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108239 (2001 HT42)
Classification: Main-belt Asteroid          SPK-ID: 2108239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07565688747993174 4.445e-08  
a 2.43718805258425 1.271e-08 au
q 2.25279799032245 1.1061e-07 au
i 6.564319794558653 4.9079e-06 deg
node 157.6506715496812 3.538e-05 deg
peri 55.52505128370773 4.5329e-05 deg
M 8.198172699708177 2.8606e-05 deg
tp 2458968.851979618746
(2020-Apr-29.35197962)
0.00011038 TDB
period 1389.734975655838
3.80
1.0871e-05
2.976e-08
d
yr
n .2590421960346146 2.0264e-09 deg/d
Q 2.621578114846051 1.3672e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      6889 days (18.86 yr)  
   first obs. used      2001-03-20  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59039  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:04:54  

Additional Information
 Earth MOID = 1.25505 au 
 Jupiter MOID = 2.34865 au 
 T_jup = 3.491 
[ 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 16.0   n/a MPO417554  

108239 (2001 HT42)          Discovered 2001-Apr-16 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 HT42 = 2002 RM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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