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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05777240634153382 1.1851e-07  
a 2.600451144698706 3.2166e-08 au
q 2.450216824495866 3.31e-07 au
i 21.42497137848459 3.7201e-06 deg
node 279.0096781341001 2.7446e-05 deg
peri 117.88784993 9.4498e-05 deg
M 302.3635461681172 8.441e-05 deg
tp 2459245.725837796588
(2021-Jan-31.22583780)
0.00035873 TDB
period 1531.692110418094
4.19
2.842e-05
7.781e-08
d
yr
n .2350341805323614 4.3609e-09 deg/d
Q 2.750685464901547 3.4025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      7233 days (19.80 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:01:10  

Additional Information
 Earth MOID = 1.51229 au 
 Jupiter MOID = 2.53835 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458704.5 (2019-Aug-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05813455959007874 1.1896e-07  
q 2.451124938448056 3.3239e-07 au
tp 2459242.414417461569
(2021-Jan-27.91441746)
0.00035395 TDB
node 279.0112914774864 2.7443e-05 deg
peri 117.05780916033 9.3398e-05 deg
i 21.42208776904018 3.7156e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      7233 days (19.80 yr)  
   first obs. used      2001-01-04  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 17:01:10  

Additional Information
 Jupiter MOID = 2.53835 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.415071337520982E-14 -3.946403616864596E-14 -1.145367426730442E-11 -6.880526982343558E-14 -1.965396293807366E-12 -1.783371071385548E-13
q -3.946403616864596E-14 1.10481083010043E-13 2.896412960882667E-11 1.914162006172916E-13 4.684463304402092E-12 4.94357019974687E-13
tp -1.145367426730442E-11 2.896412960882667E-11 1.252781120997576E-7 6.465793049070553E-11 3.164522204260122E-8 3.131122341417965E-10
node -6.880526982343558E-14 1.914162006172916E-13 6.465793049070553E-11 7.531298263463427E-10 -6.89504350755338E-10 3.671971875040355E-11
peri -1.965396293807366E-12 4.684463304402092E-12 3.164522204260122E-8 -6.89504350755338E-10 8.723109197368801E-9 3.51260453723399E-11
i -1.783371071385548E-13 4.94357019974687E-13 3.131122341417965E-10 3.671971875040355E-11 3.51260453723399E-11 1.380601894108251E-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

[ 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 13 CATAB v2.0f-lin.ifort 2020-Nov-11 17:01:12 2020-Nov-11 17:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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