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344968 (2004 XT31)
Classification: Main-belt Asteroid          SPK-ID: 2344968
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05777241654843288 1.1892e-07  
a 2.600451145448017 3.2837e-08 au
q 2.450216798659345 3.3219e-07 au
i 21.42497521301442 5.1248e-06 deg
node 279.009680571553 2.7863e-05 deg
peri 117.8878465621372 9.5183e-05 deg
M 302.3635464453461 8.5224e-05 deg
tp 2459245.725836723054
(2021-Jan-31.22583672)
0.00036232 TDB
period 1531.692111080122
4.19
2.9012e-05
7.943e-08
d
yr
n .235034180430775 4.4518e-09 deg/d
Q 2.750685492236689 3.4734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 23:22:58  

Additional Information
 Earth MOID = 1.51229 au 
 Jupiter MOID = 2.53835 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458333.5 (2018-Aug-03.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05911017992470577 1.1968e-07  
q 2.446701421607647 3.3451e-07 au
tp 2457708.954285419180
(2016-Nov-16.45428542)
0.00035129 TDB
node 279.0373601788493 2.7889e-05 deg
peri 116.8520159797046 9.2258e-05 deg
i 21.41340716743084 5.1171e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      277  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 23:22:58  

Additional Information
 Jupiter MOID = 2.53835 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.43236459704964E-14 -3.995374763634086E-14 -8.818760455954117E-12 -3.305910827571882E-14 -1.970999177575489E-12 -1.451789198171403E-13
q -3.995374763634086E-14 1.118951430515609E-13 2.161252411840532E-11 9.989274329961333E-14 4.77677098795855E-12 4.028512037440338E-13
tp -8.818760455954117E-12 2.161252411840532E-11 1.234061238599273E-7 1.399877221018893E-11 3.104653810729236E-8 2.243057058093063E-10
node -3.305910827571882E-14 9.989274329961333E-14 1.399877221018893E-11 7.778159973326523E-10 -7.210202396037577E-10 5.020054167528625E-11
peri -1.970999177575489E-12 4.77677098795855E-12 3.104653810729236E-8 -7.210202396037577E-10 8.51147277601763E-9 8.313857743450603E-12
i -1.451789198171403E-13 4.028512037440338E-13 2.243057058093063E-10 5.020054167528625E-11 8.313857743450603E-12 2.618456253166261E-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 MPO291953  

344968 (2004 XT31)          Discovered 2004-Dec-09 by CSS at Catalina
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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