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268121 (2004 TZ31)
Classification: Main-belt Asteroid          SPK-ID: 2268121
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06469967674850532 1.0536e-07  
a 2.773672298345709 2.5182e-08 au
q 2.594216597236458 2.9114e-07 au
i 3.299485516646324 6.2733e-06 deg
node 309.5972068076086 0.00014165 deg
peri 51.02964863593957 0.00015014 deg
M 158.630172948016 5.209e-05 deg
tp 2458257.028290486678
(2018-May-18.52829049)
0.00024299 TDB
period 1687.256657738791
4.62
2.2978e-05
6.291e-08
d
yr
n .2133641010387007 2.9057e-09 deg/d
Q 2.95312799945496 2.6811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      163  
   data-arc span      8841 days (24.21 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55417  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 13:01:07  

Additional Information
 Earth MOID = 1.59197 au 
 Jupiter MOID = 2.3654 au 
 T_jup = 3.331 
[ 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 16.7   n/a MPO454992  

268121 (2004 TZ31)          Discovered 2004-Oct-04 by Spacewatch at Kitt Peak
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2004 TZ31 = 2005 YR217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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