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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056018633091011 7.9173e-08  
a 3.117911893898805 4.0679e-08 AU
q 2.476863398879602 2.5332e-07 AU
i 18.54821513252432 8.8823e-06 deg
node 115.8989240549753 2.6318e-05 deg
peri 320.856294957705 3.4436e-05 deg
M 10.72522770493957 2.0861e-05 deg
tp 2456340.590153681251
(2013-Feb-17.09015368)		 0.0001161 JED
period 2010.917182188725
5.51		 3.9354e-05
1.077e-07		 d
yr
n .1790227878048007 3.5035e-09 deg/d
Q 3.758960388918007 4.9043e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      5952 days (16.30 yr)  
   first obs. used      1996-12-18  
   last obs. used      2013-04-05  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .52903  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 14:51:55  

Additional Information
 Earth MOID = 1.51854 AU 
 T_jup = 3.105 
[ 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 12.2 mag n/a PDS3 (MPO 16278)  

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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