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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1437849878986967 1.2008e-07  
a 3.203948176865103 6.5084e-08 AU
q 2.743268527026503 4.0597e-07 AU
i 25.46298337993497 1.4797e-05 deg
node 337.6170375403608 2.3829e-05 deg
peri 37.79612943552007 5.0287e-05 deg
M 35.94749642276292 4.5868e-05 deg
tp 2456791.333177231092
(2014-May-13.83317723)
0.00026478 JED
period 2094.723240562726
5.74
6.3827e-05
1.747e-07
d
yr
n .1718604124062182 5.2367e-09 deg/d
Q 3.664627826703704 7.4442e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      431  
   data-arc span      6728 days (18.42 yr)  
   first obs. used      1996-09-13  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54485  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 17:31:16  

Additional Information
 Earth MOID = 1.773 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 12.8 mag n/a MPO266273  

74415 (1999 AR9)          Discovered 1999-Jan-10 by BAO Schmidt CCD Asteroid Program at Xinglong
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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