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JPL Small-Body Database Browser
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172745 (2004 CQ81)
Classification: Main-belt Asteroid          SPK-ID: 2172745
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02132083075266763 4.728e-08  
a 2.672515623903299 1.8864e-08 au
q 2.615535370602196 1.233e-07 au
i 1.401012531374379 6.5608e-06 deg
node 12.80390178799289 0.00019591 deg
peri 248.5207737431655 0.00025039 deg
M 148.863500151195 0.00015578 deg
tp 2458340.620659819426
(2018-Aug-10.12065982)
0.00069127 TDB
period 1595.801269107133
4.37
1.6896e-05
4.626e-08
d
yr
n .2255920000624035 2.3885e-09 deg/d
Q 2.729495877204401 1.9266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      295  
   data-arc span      7206 days (19.73 yr)  
   first obs. used      2000-03-03  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5727  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:00:45  

Additional Information
 Earth MOID = 1.60032 au 
 Jupiter MOID = 2.25867 au 
 T_jup = 3.380 
[ 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 16.4   n/a MPO417929  

172745 (2004 CQ81)          Discovered 2004-Feb-12 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2004 CQ81 = 2006 RF73 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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