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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314359739672296 3.879e-08  
a 3.151185277589686 2.1852e-08 au
q 2.737006171478491 1.2517e-07 au
i 5.443880479521671 3.5189e-06 deg
node 66.86389534340464 4.9959e-05 deg
peri 312.9306771367347 5.2568e-05 deg
M 320.4763954237221 1.5055e-05 deg
tp 2459224.817615574554
(2021-Jan-10.31761557)
8.5029e-05 TDB
period 2043.192731851898
5.59
2.1253e-05
5.819e-08
d
yr
n .1761948319352649 1.8328e-09 deg/d
Q 3.565364383700882 2.4725e-08 au
  Orbit Determination Parameters
   # obs. used (total)      743  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-10-11  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54335  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:32  

Additional Information
 Earth MOID = 1.7435 au 
 Jupiter MOID = 1.89925 au 
 T_jup = 3.187 
[ 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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