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129737 (1999 AA9)
Classification: Mars-crossing Asteroid          SPK-ID: 2129737
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2660712406854975 1.1669e-07  
a 2.09589085200157 1.1526e-08 au
q 1.538234572668127 2.521e-07 au
i 4.438770119774197 3.4463e-06 deg
node 95.55330512417335 6.6122e-05 deg
peri 335.0272214015487 7.0931e-05 deg
M 25.96713309554588 3.5662e-05 deg
tp 2458920.558383998962
(2020-Mar-12.05838400)
0.00010915 TDB
period 1108.284909792759
3.03
9.1422e-06
2.503e-08
d
yr
n .3248262218668279 2.6795e-09 deg/d
Q 2.653547131335011 1.4593e-08 au
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      7660 days (20.97 yr)  
   first obs. used      1998-11-11  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51826  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 15:18:59  

Additional Information
 Earth MOID = .554281 au 
 Jupiter MOID = 2.64546 au 
 T_jup = 3.703 
[ 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 16.5   n/a MPO270643  

129737 (1999 AA9)          Discovered 1999-Jan-09 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 AA9 = 2001 SV55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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