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120953 (1998 UQ22)
Classification: Main-belt Asteroid          SPK-ID: 2120953
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1312126094844209 3.8727e-08  
a 3.150051795322476 2.1301e-08 au
q 2.736725279247129 1.2496e-07 au
i 5.443971245107781 3.4386e-06 deg
node 66.85708950738321 4.9068e-05 deg
peri 313.0586123619595 5.1712e-05 deg
M 355.6194165862041 1.4752e-05 deg
tp 2459225.348742908952
(2021-Jan-10.84874291)
8.3624e-05 TDB
period 2042.090425455711
5.59
2.0713e-05
5.671e-08
d
yr
n .1762899406962661 1.7881e-09 deg/d
Q 3.563378311397822 2.4096e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      8128 days (22.25 yr)  
   first obs. used      1998-10-11  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:18  

Additional Information
 Earth MOID = 1.74192 au 
 Jupiter MOID = 1.90209 au 
 T_jup = 3.188 
[ 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 14.9   n/a MPO439780  

120953 (1998 UQ22)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 UQ22 = 2004 XX9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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