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JPL Small-Body Database Browser
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266580 (2008 HL18)
Classification: Main-belt Asteroid          SPK-ID: 2266580
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04280646874099191 6.1353e-08  
a 2.433206629424178 2.4357e-08 au
q 2.329049645901358 1.5693e-07 au
i 8.264979948075684 6.253e-06 deg
node 119.4190297634414 3.9203e-05 deg
peri 136.2411598142793 0.00010254 deg
M 290.9338166922616 9.9348e-05 deg
tp 2458866.468295250269
(2020-Jan-17.96829525)
0.0003843 TDB
period 1386.330932222934
3.80
2.0816e-05
5.699e-08
d
yr
n .2596782569243785 3.8991e-09 deg/d
Q 2.537363612946999 2.5399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      294  
   data-arc span      6518 days (17.85 yr)  
   first obs. used      2001-07-27  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57976  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:36:41  

Additional Information
 Earth MOID = 1.31986 au 
 Jupiter MOID = 2.49923 au 
 T_jup = 3.491 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO433731  

266580 (2008 HL18)          Discovered 2008-Apr-26 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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