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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1977-Aug-11 15:35 00:02 Amphi 0.0185243008954851 0.0185203581207943 0.0185282677877698 6.3786720350618 6.37867198640977 2443367.149333945 2.48877126885004 1184.03717543679 84.8758286409033 81.3328301159187 32271.400451134 T 16 CATAB v2.0f-lin.ifort 2021-Apr-14 08:34:21 2021-Apr-14 08:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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