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243492 (2009 UB26)
Classification: Main-belt Asteroid          SPK-ID: 2243492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03457742354179358 5.6816e-08  
a 2.789127494002755 2.4076e-08 au
q 2.692686651330561 1.6288e-07 au
i 6.027605504480773 5.279e-06 deg
node 60.17058053744047 5.7948e-05 deg
peri 273.1525743181649 0.0001005 deg
M 202.267465898992 8.467e-05 deg
tp 2459945.952124755870
(2023-Jan-01.45212476)
0.00040141 TDB
period 1701.378643547692
4.66
2.2029e-05
6.031e-08
d
yr
n .2115931108958396 2.7397e-09 deg/d
Q 2.88556833667495 2.4908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      10251 days (28.07 yr)  
   first obs. used      1993-03-23  
   last obs. used      2021-04-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59665  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:07:32  

Additional Information
 Earth MOID = 1.68878 au 
 Jupiter MOID = 2.23096 au 
 T_jup = 3.321 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457641.5 (2016-Sep-10.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03367381872168511 5.6122e-08  
q 2.696506546996844 1.6049e-07 au
tp 2458235.723827377898
(2018-Apr-27.22382738)
0.00041493 TDB
node 60.18989221830122 5.7959e-05 deg
peri 271.2286115441396 0.00010324 deg
i 6.026666311356122 5.2784e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      10251 days (28.07 yr)  
   first obs. used      1993-03-23  
   last obs. used      2021-04-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59665  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:07:32  

Additional Information
 Jupiter MOID = 2.23096 au 
 T_jup = 3.321 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.149663866143117E-15 -8.913603866408056E-15 1.004756330018383E-11 8.791477351157374E-15 2.104430605162597E-12 2.079015463255291E-15
q -8.913603866408056E-15 2.575851393573431E-14 -2.706469556463923E-11 -2.470636539843499E-14 -5.709915842386354E-12 -5.429349961776866E-15
tp 1.004756330018383E-11 -2.706469556463923E-11 1.721628961597595E-7 1.524975437966557E-10 3.55028864210481E-8 4.040953972238041E-12
node 8.791477351157374E-15 -2.470636539843499E-14 1.524975437966557E-10 3.359202129664442E-9 -3.308802220198645E-9 -1.317402465692921E-10
peri 2.104430605162597E-12 -5.709915842386354E-12 3.55028864210481E-8 -3.308802220198645E-9 1.065910270948534E-8 1.318565947154096E-10
i 2.079015463255291E-15 -5.429349961776866E-15 4.040953972238041E-12 -1.317402465692921E-10 1.318565947154096E-10 2.786119711368008E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.12   n/a MPCxxxxx  
diameter diameter 3.158 km 1.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243492 (2009 UB26)          Discovered 2009-Oct-21 by CSS at Catalina
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 UB26 = 2007 EW107 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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