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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05772659263134198 1.1797e-07  
a 2.600023567280048 3.2079e-08 au
q 2.449933065979784 3.2954e-07 au
i 21.42486798162192 3.6285e-06 deg
node 279.0088791599123 2.697e-05 deg
peri 118.090319291919 9.4444e-05 deg
M 349.1892640771999 8.4247e-05 deg
tp 2459246.485097512300
(2021-Jan-31.98509751)
0.00035829 TDB
period 1531.31435479003
4.19
2.834e-05
7.759e-08
d
yr
n .2350921604528172 4.3509e-09 deg/d
Q 2.750114068580312 3.3931e-08 au
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      7296 days (19.98 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:34:19  

Additional Information
 Earth MOID = 1.51127 au 
 Jupiter MOID = 2.53847 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458722.5 (2019-Aug-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0580942909723612 1.1847e-07  
q 2.451215321956154 3.3096e-07 au
tp 2459242.581845515641
(2021-Jan-28.08184552)
0.00035336 TDB
node 279.0108860939463 2.6963e-05 deg
peri 117.0923415167909 9.3325e-05 deg
i 21.42275882804603 3.6248e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      511  
   data-arc span      7296 days (19.98 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-12-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:34:19  

Additional Information
 Jupiter MOID = 2.53847 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.403470469865234E-14 -3.913266892828699E-14 -1.119095522746507E-11 -4.138811026507491E-14 -1.93367539748328E-12 -1.729202281249408E-13
q -3.913266892828699E-14 1.095367945609885E-13 2.817563668683195E-11 1.158479470774898E-13 4.58142358759339E-12 4.792119736606577E-13
tp -1.119095522746507E-11 2.817563668683195E-11 1.248632863054021E-7 7.705371075355642E-12 3.161785193521515E-8 3.019541163556884E-10
node -4.138811026507491E-14 1.158479470774898E-13 7.705371075355642E-12 7.269851359330741E-10 -6.78125186508711E-10 3.264078742130055E-11
peri -1.93367539748328E-12 4.58142358759339E-12 3.161785193521515E-8 -6.78125186508711E-10 8.709606129274006E-9 3.642953448942206E-11
i -1.729202281249408E-13 4.792119736606577E-13 3.019541163556884E-10 3.264078742130055E-11 3.642953448942206E-11 1.313923623698807E-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 15.86   n/a E2021B25  

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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