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29422 (1997 AH21)
Classification: Main-belt Asteroid          SPK-ID: 2029422
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2049216117357197 6.909e-08  
a 3.114655261656147 3.3658e-08 AU
q 2.47639508543643 2.147e-07 AU
i 18.55365358548365 7.6154e-06 deg
node 115.897953381875 2.4252e-05 deg
peri 320.6248550830376 3.1474e-05 deg
M 118.5009829947232 1.9896e-05 deg
tp 2456339.604406523891
(2013-Feb-16.10440652)
0.00010651 JED
period 2007.767426384925
5.50
3.2545e-05
8.91e-08
d
yr
n .1793036361030103 2.9064e-09 deg/d
Q 3.752915437875864 4.0555e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      6382 days (17.47 yr)  
   first obs. used      1996-12-18  
   last obs. used      2014-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49331  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:47:26  

Additional Information
 Earth MOID = 1.51873 AU 
 T_jup = 3.106 
[ 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 12.4 mag n/a MPO259542  

29422 (1997 AH21)          Discovered 1997-Jan-09 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AH21 = 1998 GK9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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