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173304 (1999 UM32)
Classification: Main-belt Asteroid          SPK-ID: 2173304
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953233097608781 9.5161e-08  
a 2.533478059609324 1.9653e-08 au
q 2.038630739799864 2.5298e-07 au
i 2.914500094236996 1.6088e-05 deg
node 50.97153605761584 0.00023905 deg
peri 37.65611999362338 0.00026267 deg
M .2271325032093483 0.00010282 deg
tp 2458999.570710704108
(2020-May-30.07071070)
0.00042065 TDB
period 1472.903005048175
4.03
1.7139e-05
4.692e-08
d
yr
n .2444152797340686 2.844e-09 deg/d
Q 3.028325379418785 2.3492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      8798 days (24.09 yr)  
   first obs. used      1995-12-26  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:02:12  

Additional Information
 Earth MOID = 1.05597 au 
 Jupiter MOID = 2.18732 au 
 T_jup = 3.421 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457083.5 (2015-Mar-02.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .193388153608367 9.3623e-08  
q 2.044448885472866 2.4842e-07 au
tp 2457525.615356701444
(2016-May-17.11535670)
0.00041504 TDB
node 50.99400647751429 0.00023895 deg
peri 37.52048454376691 0.00026316 deg
i 2.91535332259877 1.6098e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      300  
   data-arc span      8798 days (24.09 yr)  
   first obs. used      1995-12-26  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66348  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:02:12  

Additional Information
 Jupiter MOID = 2.18732 au 
 T_jup = 3.421 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.765340434402454E-15 -2.32363152196097E-14 -3.609241900714139E-11 2.569860011011247E-13 -9.569076694141801E-12 -4.450922071767119E-14
q -2.32363152196097E-14 6.171298792773685E-14 9.631314962589673E-11 -6.859808184095916E-13 2.553427891491239E-11 1.188547000139187E-13
tp -3.609241900714139E-11 9.631314962589673E-11 1.72260476268465E-7 -1.240729749962714E-9 4.601603146087789E-8 2.125521327359084E-10
node 2.569860011011247E-13 -6.859808184095916E-13 -1.240729749962714E-9 5.70988737008933E-8 -5.734801215135634E-8 -3.59378973331282E-9
peri -9.569076694141801E-12 2.553427891491239E-11 4.601603146087789E-8 -5.734801215135634E-8 6.925299493170458E-8 3.644436092659621E-9
i -4.450922071767119E-14 1.188547000139187E-13 2.125521327359084E-10 -3.59378973331282E-9 3.644436092659621E-9 2.591514793546574E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO493969  

173304 (1999 UM32)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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