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39269 (2001 AK9)
Classification: Main-belt Asteroid          SPK-ID: 2039269
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048588279636665 3.9042e-08  
a 3.171579297222876 2.5719e-08 au
q 2.839011209322257 1.2986e-07 au
i 10.93558778901606 4.3006e-06 deg
node 140.0806864413615 2.4064e-05 deg
peri 133.8246311274722 3.3688e-05 deg
M .03900028446707244 2.3122e-05 deg
tp 2459000.276500239383
(2020-May-30.77650024)
0.00013251 TDB
period 2063.0596653743
5.65
2.5094e-05
6.87e-08
d
yr
n .1744981039773686 2.1225e-09 deg/d
Q 3.504147385123496 2.8416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      995  
   data-arc span      8001 days (21.91 yr)  
   first obs. used      1997-08-01  
   last obs. used      2019-06-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55305  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:08:56  

Additional Information
 Earth MOID = 1.83587 au 
 Jupiter MOID = 1.73792 au 
 T_jup = 3.165 
[ 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 13.9   n/a MPO474250  
diameter diameter 4.950 km 0.940 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39269 (2001 AK9)          Discovered 2001-Jan-02 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 AK9 = 1998 QR35 = 1999 VW179 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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