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

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1437757196070934 7.3233e-08  
a 3.207291859052344 2.6424e-08 au
q 2.746161164027121 2.3975e-07 au
i 25.36979278411466 1.0157e-05 deg
node 337.3817720745271 9.5414e-06 deg
peri 39.94084321150357 2.8194e-05 deg
M 308.195308552366 2.531e-05 deg
tp 2458902.406692502466
(2020-Feb-22.90669250)
0.00014726 TDB
period 2098.00321676951
5.74
2.5927e-05
7.098e-08
d
yr
n .1715917292797698 2.1205e-09 deg/d
Q 3.668422554077567 3.0223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      8475 days (23.20 yr)  
   first obs. used      1996-09-13  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47852  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:46:43  

Additional Information
 Earth MOID = 1.77879 au 
 Jupiter MOID = 1.87441 au 
 T_jup = 3.026 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO400701  
diameter diameter 8.796 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.173   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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