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74415 (1999 AR9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2074415
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442209342700202 1.4512e-07  
a 3.205630615409732 9.0505e-08 AU
q 2.74331157313076 4.7443e-07 AU
i 25.45828803589823 1.7058e-05 deg
node 337.6188557177996 2.6478e-05 deg
peri 37.70417921378181 5.292e-05 deg
M 292.9544671014136 5.1786e-05 deg
tp 2456790.923534594296
(2014-May-13.42353459)		 0.00031045 JED
period 2096.373410388837
5.74		 8.8781e-05
2.431e-07		 d
yr
n .1717251317041018 7.2725e-09 deg/d
Q 3.667949657688703 1.0356e-07 AU
   Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      6061 days (16.59 yr)  
   first obs. used      1996-09-13  
   last obs. used      2013-04-18  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .55578  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 17:25:47  

Additional Information
 Earth MOID = 1.77225 AU 
 T_jup = 3.026 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.672 mag .4401 1 autocmod 2.5c

74415 (1999 AR9)          Discovered 1999-Jan-10 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AR9 = 1999 FC63 = 2002 PW45 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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