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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143133424040919 1.009e-07  
a 3.21047586172437 4.2222e-08 au
q 2.750949458835041 3.1988e-07 au
i 25.4477724465848 1.3573e-05 deg
node 337.6178166114262 1.7299e-05 deg
peri 38.63274658329493 4.6298e-05 deg
M 138.0926802926184 4.5146e-05 deg
tp 2456794.526618783506
(2014-May-17.02661878)
0.00025766 JED
period 2101.128145410092
5.75
4.1449e-05
1.135e-07
d
yr
n .1713365273728873 3.38e-09 deg/d
Q 3.670002264613699 4.8266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      7139 days (19.55 yr)  
   first obs. used      1996-09-13  
   last obs. used      2016-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53267  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 15:14:28  

Additional Information
 Earth MOID = 1.781 au 
 Jupiter MOID = 1.85874 au 
 T_jup = 3.025 
[ 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 12.9 mag n/a MPO366103  

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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