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(2009 UB2)
Classification: Main-belt Asteroid          SPK-ID: 3472335
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1958409448290254 1.2469e-07  
a 2.64585244760945 6.3277e-08 au
q 2.127686204391426 3.1175e-07 au
i 11.09651441354599 9.0818e-06 deg
node 264.5034710326088 5.4677e-05 deg
peri 36.52557190168834 6.9664e-05 deg
M 226.9558707506102 6.0856e-05 deg
tp 2459581.451761875755
(2022-Jan-01.95176188)
0.00028372 TDB
period 1571.979428594225
4.30
5.6392e-05
1.544e-07
d
yr
n .2290106304520394 8.2154e-09 deg/d
Q 3.164018690827475 7.567e-08 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2000-06-11  
   last obs. used      2020-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-16 06:45:26  

Additional Information
 Earth MOID = 1.12283 au 
 Jupiter MOID = 2.07334 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458021.5 (2017-Sep-25.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952904221264425 1.2449e-07  
q 2.128994279888325 3.1124e-07 au
tp 2458008.543393846987
(2017-Sep-12.04339385)
0.00023699 TDB
node 264.5122741441901 5.4677e-05 deg
peri 36.39203427947083 6.9782e-05 deg
i 11.09594178274414 9.0797e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2000-06-11  
   last obs. used      2020-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-16 06:45:26  

Additional Information
 Jupiter MOID = 2.07334 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.549872188294608E-14 -3.832264359706308E-14 1.767163198369737E-11 -7.168904000871136E-14 3.441364659954387E-12 5.916692411056773E-14
q -3.832264359706308E-14 9.687133697019472E-14 -3.70168700993963E-11 1.855920389486097E-13 -7.318166480732674E-12 -1.350596705359988E-13
tp 1.767163198369737E-11 -3.70168700993963E-11 5.616543957950262E-8 -9.589663066731827E-11 1.048122178457313E-8 1.129945835088436E-10
node -7.168904000871136E-14 1.855920389486097E-13 -9.589663066731827E-11 2.989594699163922E-9 -2.951508257664346E-9 2.767754223519139E-10
peri 3.441364659954387E-12 -7.318166480732674E-12 1.048122178457313E-8 -2.951508257664346E-9 4.869556608094822E-9 -2.504681152225109E-10
i 5.916692411056773E-14 -1.350596705359988E-13 1.129945835088436E-10 2.767754223519139E-10 -2.504681152225109E-10 8.244054993056312E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   .20669 E2019-YB0 autocmod 2.6n
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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