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295581 (2008 ST112)
Classification: Main-belt Asteroid          SPK-ID: 2295581
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 .1767725560173237 7.1887e-08  
a 3.019075867416562 3.4903e-08 au
q 2.485386109523118 2.2366e-07 au
i 4.280261831340574 7.9528e-06 deg
node 138.2183712777722 7.7537e-05 deg
peri 192.1651600851394 7.9425e-05 deg
M 115.1634598129046 1.5471e-05 deg
tp 2458387.554769677041
(2018-Sep-26.05476968)
8.1953e-05 TDB
period 1916.061598659431
5.25
3.3227e-05
9.097e-08
d
yr
n .1878854000580531 3.2582e-09 deg/d
Q 3.552765625310006 4.1073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      5935 days (16.25 yr)  
   first obs. used      2003-10-29  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:41:02  

Additional Information
 Earth MOID = 1.47468 au 
 Jupiter MOID = 1.80826 au 
 T_jup = 3.219 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1791304999946912 7.291e-08  
q 2.478228137092684 2.2709e-07 au
tp 2456463.150193139236
(2013-Jun-19.65019314)
8.5076e-05 TDB
node 138.3921276530997 7.7131e-05 deg
peri 190.8176124143121 7.8925e-05 deg
i 4.289201648340176 7.9826e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      5935 days (16.25 yr)  
   first obs. used      2003-10-29  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:41:02  

Additional Information
 Jupiter MOID = 1.80826 au 
 T_jup = 3.219 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.315835542365844E-15 -1.643175973333809E-14 6.702619715407518E-13 -1.100673579706764E-14 1.040851976861334E-13 -2.426652984820992E-15
q -1.643175973333809E-14 5.156822612958762E-14 -2.881523633198441E-12 2.970145275061994E-14 -3.910215020455683E-13 8.601720693687179E-15
tp 6.702619715407518E-13 -2.881523633198441E-12 7.237959282409143E-9 2.873954601067567E-14 1.427862251166822E-9 -1.348683105028168E-12
node -1.100673579706764E-14 2.970145275061994E-14 2.873954601067567E-14 5.949179213161952E-9 -5.931820073874289E-9 1.03408708204869E-10
peri 1.040851976861334E-13 -3.910215020455683E-13 1.427862251166822E-9 -5.931820073874289E-9 6.229207404045851E-9 -1.033749483346615E-10
i -2.426652984820992E-15 8.601720693687179E-15 -1.348683105028168E-12 1.03408708204869E-10 -1.033749483346615E-10 6.372210921538148E-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 15.9   n/a MPO455185  

295581 (2008 ST112)          Discovered 2008-Sep-22 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 ST112 = 2006 EX39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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