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233891 (2008 XA54)
Classification: Outer Main-belt Asteroid          SPK-ID: 2233891
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07648585209816457 4.695e-08  
a 3.245894105396541 3.4731e-08 au
q 2.997629128924877 1.488e-07 au
i 3.037500207351984 6.802e-06 deg
node 169.761889367542 0.00010867 deg
peri 138.5100178714351 0.00011873 deg
M 109.4827179033648 4.7426e-05 deg
tp 2458350.904485889736
(2018-Aug-20.40448589)
0.00028246 TDB
period 2135.993602991362
5.85
3.4282e-05
9.386e-08
d
yr
n .1685398305949214 2.705e-09 deg/d
Q 3.494159081868205 3.7387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      9164 days (25.09 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61718  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 01:50:53  

Additional Information
 Earth MOID = 1.98387 au 
 Jupiter MOID = 1.70605 au 
 T_jup = 3.176 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457568.5 (2016-Jun-29.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07825926709502334 4.7171e-08  
q 2.996359588722856 1.495e-07 au
tp 2458338.819830173853
(2018-Aug-08.31983017)
0.00027518 TDB
node 169.7804167201402 0.00010852 deg
peri 136.3492494572332 0.00011802 deg
i 3.036447807507677 6.8053e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      231  
   data-arc span      9164 days (25.09 yr)  
   first obs. used      1995-09-20  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61718  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 01:50:53  

Additional Information
 Jupiter MOID = 1.70605 au 
 T_jup = 3.176 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.225098044303727E-15 -6.896560924383705E-15 2.182604658688902E-12 -1.531854547355811E-15 3.373245845944039E-13 -2.99438235963852E-16
q -6.896560924383705E-15 2.234973355538931E-14 -7.509451388134847E-12 -1.50025718399163E-14 -1.21488548219475E-12 4.078818119070945E-16
tp 2.182604658688902E-12 -7.509451388134847E-12 7.572396106869521E-8 3.985481000147236E-11 1.280435376042653E-8 -1.520843352799634E-12
node -1.531854547355811E-15 -1.50025718399163E-14 3.985481000147236E-11 1.177643340796026E-8 -1.175240943583132E-8 2.415964830552287E-10
peri 3.373245845944039E-13 -1.21488548219475E-12 1.280435376042653E-8 -1.175240943583132E-8 1.39288078749532E-8 -2.415004039760279E-10
i -2.99438235963852E-16 4.078818119070945E-16 -1.520843352799634E-12 2.415964830552287E-10 -2.415004039760279E-10 4.631165411479841E-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 MPO454692  

233891 (2008 XA54)          Discovered 2008-Dec-01 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 XA54 = 1995 SH75 = 2001 SF192 = 2005 EF216 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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