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9952 (1991 AK)
Classification: Main-belt Asteroid          SPK-ID: 2009952
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04301895460982436 6.4864e-08  
a 2.655767554958775 2.1749e-08 AU
q 2.54151921105776 1.6884e-07 AU
i 1.930011405929049 7.256e-06 deg
node 332.7189545194907 0.00016759 deg
peri 159.4969434820669 0.00018537 deg
M 130.5673429918233 8.0335e-05 deg
tp 2456227.155588267539
(2012-Oct-26.65558827)
0.00035262 JED
period 1580.82399085514
4.33
1.9418e-05
5.316e-08
d
yr
n .2277293374104599 2.7974e-09 deg/d
Q 2.770015898859791 2.2684e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1207  
   data-arc span      13452 days (36.83 yr)  
   first obs. used      1976-09-24  
   last obs. used      2013-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48518  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:41:07  

Additional Information
 Earth MOID = 1.55585 AU 
 T_jup = 3.386 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO267747  

9952 (1991 AK)          Discovered 1991-Jan-09 by Arai, M., Mori, H. at Yorii (875)
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 AK = 1976 SV2 = 1989 SY6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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