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312473 (2008 SX245)
Classification: Amor [NEO]          SPK-ID: 2312473
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 82 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4583107984342076 3.8411e-08  
a 1.992768411866915 2.1108e-08 au
q 1.079461129929721 7.3783e-08 au
i 11.82439980156655 7.3192e-06 deg
node 209.0202662451917 1.6032e-05 deg
peri 292.8868679644602 1.94e-05 deg
M 344.847708933183 2.0749e-05 deg
tp 2459043.747347508299
(2020-Jul-13.24734751)
5.9883e-05 TDB
period 1027.504357877817
2.81
1.6326e-05
4.47e-08
d
yr
n .3503634775267869 5.5668e-09 deg/d
Q 2.906075693804109 3.0783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      7796 days (21.34 yr)  
   first obs. used      1998-06-23  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32132  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Oct-27 06:23:26  

Additional Information
 Earth MOID = .186553 au 
 Jupiter MOID = 2.25526 au 
 T_jup = 3.688 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456711.5 (2014-Feb-23.0) TDB
Reference: JPL 82 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4583538375445549 3.8431e-08  
q 1.079281882776322 7.3786e-08 au
tp 2456988.847675172148
(2014-Nov-27.34767517)
2.9742e-05 TDB
node 209.048663973624 1.6032e-05 deg
peri 292.8954985680958 1.9395e-05 deg
i 11.82427416647074 7.3197e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      549  
   data-arc span      7796 days (21.34 yr)  
   first obs. used      1998-06-23  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32132  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Oct-27 06:23:26  

Additional Information
 Jupiter MOID = 2.25526 au 
 T_jup = 3.688 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.476916575600343E-15 -2.804761848540547E-15 5.569965333137077E-13 -4.819234577748677E-14 1.219334434766183E-13 -5.860896175950949E-14
q -2.804761848540547E-15 5.444409742660932E-15 -8.234477530069693E-13 8.953812558422E-14 -1.773291186999651E-13 1.080037196750417E-13
tp 5.569965333137077E-13 -8.234477530069693E-13 8.845571253481878E-10 -4.035517430923462E-11 2.931503276364504E-10 -4.313515707358916E-11
node -4.819234577748677E-14 8.953812558422E-14 -4.035517430923462E-11 2.570371517906414E-10 -2.635071480615287E-10 1.585609366221654E-11
peri 1.219334434766183E-13 -1.773291186999651E-13 2.931503276364504E-10 -2.635071480615287E-10 3.761704054337355E-10 -2.73710161791931E-11
i -5.860896175950949E-14 1.080037196750417E-13 -4.313515707358916E-11 1.585609366221654E-11 -2.73710161791931E-11 5.357798011523694E-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 18.4   n/a MPO345861  

312473 (2008 SX245)          Discovered 2008-Sep-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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