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146722 (2001 XA9)
Classification: Main-belt Asteroid          SPK-ID: 2146722
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1602640102021755 4.9702e-08  
a 2.795775350533755 2.0472e-08 au
q 2.347713181232822 1.3851e-07 au
i 8.249834715042271 4.9554e-06 deg
node 294.9441320666771 3.5928e-05 deg
peri 252.8241470945995 3.8884e-05 deg
M 288.1602309455003 1.5752e-05 deg
tp 2459541.233050118778
(2021-Nov-22.73305012)
7.635e-05 TDB
period 1707.46509429483
4.67
1.8754e-05
5.135e-08
d
yr
n .2108388635310154 2.3157e-09 deg/d
Q 3.243837519834687 2.3752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      405  
   data-arc span      7001 days (19.17 yr)  
   first obs. used      2001-12-09  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56508  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:02:23  

Additional Information
 Earth MOID = 1.36494 au 
 Jupiter MOID = 1.82566 au 
 T_jup = 3.293 
[ 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 15.72   n/a MPCxxxxx  

146722 (2001 XA9)          Discovered 2001-Dec-09 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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