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295789 (2008 US248)
Classification: Main-belt Asteroid          SPK-ID: 2295789
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183257349879483 8.2051e-08  
a 3.081512814186798 5.2044e-08 au
q 2.716890545573364 2.4885e-07 au
i 8.782401065337613 7.7089e-06 deg
node 71.15420785480224 5.2027e-05 deg
peri 55.85364876415269 6.3785e-05 deg
M 359.6032230369236 3.7737e-05 deg
tp 2459002.677651316642
(2020-Jun-02.17765132)
0.00020714 TDB
period 1975.806427653582
5.41
5.0054e-05
1.37e-07
d
yr
n .1822040838421236 4.6159e-09 deg/d
Q 3.446135082800232 5.8202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      6319 days (17.30 yr)  
   first obs. used      2002-10-05  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:42:28  

Additional Information
 Earth MOID = 1.74437 au 
 Jupiter MOID = 1.6963 au 
 T_jup = 3.199 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456879.5 (2014-Aug-10.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .119080389308246 8.1716e-08  
q 2.714213749271442 2.483e-07 au
tp 2457033.731282603232
(2015-Jan-11.23128260)
0.00018624 TDB
node 71.26022659067434 5.1988e-05 deg
peri 56.93561580875915 6.3704e-05 deg
i 8.786611775391108 7.7128e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      6319 days (17.30 yr)  
   first obs. used      2002-10-05  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:42:28  

Additional Information
 Jupiter MOID = 1.6963 au 
 T_jup = 3.199 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.6774583551527E-15 -1.995935386091012E-14 -2.297917941136265E-12 2.979428266101531E-14 -7.44170932857315E-13 -1.137036188392328E-14
q -1.995935386091012E-14 6.165145608898654E-14 9.383747427470491E-12 -9.01317002018517E-14 2.671478559032493E-12 3.79370400751344E-14
tp -2.297917941136265E-12 9.383747427470491E-12 3.468588635864922E-8 -8.272178968958021E-11 6.912481538611015E-9 -8.839872354985625E-12
node 2.979428266101531E-14 -9.01317002018517E-14 -8.272178968958021E-11 2.702736862089683E-9 -2.686480982240867E-9 2.521399490300209E-11
peri -7.44170932857315E-13 2.671478559032493E-12 6.912481538611015E-9 -2.686480982240867E-9 4.058229202407632E-9 -2.637064751933036E-11
i -1.137036188392328E-14 3.79370400751344E-14 -8.839872354985625E-12 2.521399490300209E-11 -2.637064751933036E-11 5.948748967549251E-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 15.8   n/a MPO455186  
diameter diameter 4.339 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

295789 (2008 US248)          Discovered 2008-Oct-26 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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