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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457449.5 (2016-Mar-02.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372545322150308 3.9645e-08  
q 2.715434960407581 1.2905e-07 au
tp 2457172.777191654971
(2015-May-30.27719165)
8.247e-05 TDB
node 66.94927611433914 4.9937e-05 deg
peri 311.5869074025867 5.2171e-05 deg
i 5.452180207169419 3.5258e-06 deg
  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
 Jupiter MOID = 1.89925 au 
 T_jup = 3.187 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.571701892056387E-15 -5.064916977312629E-15 -6.996990538824636E-13 2.116582121180816E-16 -1.267035674839852E-13 -1.854281003781853E-15
q -5.064916977312629E-15 1.665507083743577E-14 1.661921782374996E-12 -1.293596955176485E-15 3.080311523030118E-13 6.340570755819573E-15
tp -6.996990538824636E-13 1.661921782374996E-12 6.801271694373793E-9 1.653120977484628E-12 1.283732186476737E-9 2.023367059320834E-12
node 2.116582121180816E-16 -1.293596955176485E-15 1.653120977484628E-12 2.493654867181179E-9 -2.481846383923694E-9 -2.767021368978689E-11
peri -1.267035674839852E-13 3.080311523030118E-13 1.283732186476737E-9 -2.481846383923694E-9 2.721764694876714E-9 2.793292022427071E-11
i -1.854281003781853E-15 6.340570755819573E-15 2.023367059320834E-12 -2.767021368978689E-11 2.793292022427071E-11 1.243103964772949E-11

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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