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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2045559999456281 6.8565e-08  
a 3.115537764234151 3.2286e-08 au
q 2.478235821502868 2.1219e-07 au
i 18.55328637176074 6.6522e-06 deg
node 115.8989275797828 2.349e-05 deg
peri 320.6308079308532 2.878e-05 deg
M 190.2146431235541 1.9633e-05 deg
tp 2458347.817778041537
(2018-Aug-17.31777804)
0.00011932 JED
period 2008.620804343726
5.50
3.1223e-05
8.548e-08
d
yr
n .1792274575776 2.786e-09 deg/d
Q 3.752839706965434 3.8891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      953  
   data-arc span      6818 days (18.67 yr)  
   first obs. used      1996-12-18  
   last obs. used      2015-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49379  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:23:56  

Additional Information
 Earth MOID = 1.52036 au 
 Jupiter MOID = 1.57306 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 12.5 mag n/a MPO347740  

29422 (1997 AH21)          Discovered 1997-Jan-09 by Ueda, S., Kaneda, H. at Kushiro
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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