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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 ]

[ hide orbit diagram ]

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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05772659249492526 1.1797e-07  
a 2.600023567589723 3.208e-08 au
q 2.449933066626269 3.2954e-07 au
i 21.42486798149176 3.6285e-06 deg
node 279.008879173604 2.697e-05 deg
peri 118.0903192706711 9.4444e-05 deg
M 349.1892640986626 8.4247e-05 deg
tp 2459246.485097429221
(2021-Jan-31.98509743)		 0.00035829 TDB
period 1531.31435506361
4.19		 2.834e-05
7.759e-08		 d
yr
n .2350921604108164 4.3509e-09 deg/d
Q 2.750114068553177 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:02:57  

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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05809429077936264 1.1847e-07  
q 2.451215322510781 3.3096e-07 au
tp 2459242.581845581546
(2021-Jan-28.08184558)		 0.00035336 TDB
node 279.0108861058899 2.6963e-05 deg
peri 117.0923415379341 9.3325e-05 deg
i 21.42275882593295 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:02:57  

Additional Information
 Jupiter MOID = 2.53847 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.40347050951755E-14 -3.913267139358892E-14 -1.119094939526193E-11 -4.138816273009104E-14 -1.933673740692635E-12 -1.729202366712418E-13
q -3.913267139358892E-14 1.095368058931033E-13 2.81756343199902E-11 1.158480977903277E-13 4.581422476780114E-12 4.792120374467035E-13
tp -1.119094939526193E-11 2.81756343199902E-11 1.248632223957322E-7 7.705390251357135E-12 3.161783522474433E-8 3.019540193347535E-10
node -4.138816273009104E-14 1.158480977903277E-13 7.705390251357135E-12 7.26985135421603E-10 -6.781251847933254E-10 3.264079112307439E-11
peri -1.933673740692635E-12 4.581422476780114E-12 3.161783522474433E-8 -6.781251847933254E-10 8.709601777208453E-9 3.642950377802311E-11
i -1.729202366712418E-13 4.792120374467035E-13 3.019540193347535E-10 3.264079112307439E-11 3.642950377802311E-11 1.31392366556641E-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

[ 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 15 CATAB v2.0f-lin.ifort 2021-Feb-24 16:02:58 2021-Feb-24 16:03
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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