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249306 (2008 UT74)
Classification: Main-belt Asteroid          SPK-ID: 2249306
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08432451881314518 3.7925e-08  
a 2.215999654922896 1.7141e-08 au
q 2.029136550331426 8.309e-08 au
i 3.832957469479709 6.4048e-06 deg
node 284.926855174409 6.8299e-05 deg
peri 286.2000752546945 8.1025e-05 deg
M 32.63527201255391 4.4827e-05 deg
tp 2458891.271065912621
(2020-Feb-11.77106591)
0.00014991 TDB
period 1204.905424300747
3.30
1.398e-05
3.828e-08
d
yr
n .2987786366792413 3.4667e-09 deg/d
Q 2.402862759514365 1.8587e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      6696 days (18.33 yr)  
   first obs. used      2001-09-28  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52146  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:41  

Additional Information
 Earth MOID = 1.02696 au 
 Jupiter MOID = 2.57569 au 
 T_jup = 3.646 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457123.5 (2015-Apr-11.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08467593802280711 3.7865e-08  
q 2.028010753440695 8.3022e-08 au
tp 2457686.250470921175
(2016-Oct-24.75047092)
0.00014864 TDB
node 284.9819714118613 6.8277e-05 deg
peri 286.1195743839889 8.0954e-05 deg
i 3.83357767814759 6.4067e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      6696 days (18.33 yr)  
   first obs. used      2001-09-28  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52146  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:21:41  

Additional Information
 Jupiter MOID = 2.57569 au 
 T_jup = 3.646 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.433747729065244E-15 -3.087627382218108E-15 -1.835574362832761E-12 4.709638348077237E-15 -5.182215888374575E-13 9.649628569648209E-16
q -3.087627382218108E-15 6.892700586984855E-15 4.09141035209979E-12 -1.064576028152578E-14 1.126801434089866E-12 -1.780972679634677E-15
tp -1.835574362832761E-12 4.09141035209979E-12 2.209244869254328E-8 -2.85967310974809E-11 6.475480360962022E-9 -6.364351340712934E-13
node 4.709638348077237E-15 -1.064576028152578E-14 -2.85967310974809E-11 4.661773339104312E-9 -4.659138386539025E-9 1.925008103460073E-10
peri -5.182215888374575E-13 1.126801434089866E-12 6.475480360962022E-9 -4.659138386539025E-9 6.553595455493404E-9 -1.922799735339671E-10
i 9.649628569648209E-16 -1.780972679634677E-15 -6.364351340712934E-13 1.925008103460073E-10 -1.922799735339671E-10 4.104618247041307E-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 17.3   n/a MPO418331  
diameter diameter 1.804 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.059   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

249306 (2008 UT74)          Discovered 2008-Oct-21 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 UT74 = 2005 XS31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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