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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06469971116467946 1.1891e-07  
a 2.773672298997067 2.7403e-08 au
q 2.594216502386484 3.3365e-07 au
i 3.299484766468362 6.313e-06 deg
node 309.5971076104179 0.00018462 deg
peri 51.02972217837093 0.00019417 deg
M 158.630191774865 6.0396e-05 deg
tp 2458257.028201986658
(2018-May-18.52820199)
0.00028431 TDB
period 1687.256658333135
4.62
2.5004e-05
6.846e-08
d
yr
n .2133641009635424 3.1619e-09 deg/d
Q 2.95312809560765 2.9176e-08 au
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      8447 days (23.13 yr)  
   first obs. used      1995-11-18  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57922  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 02:12:55  

Additional Information
 Earth MOID = 1.59197 au 
 Jupiter MOID = 2.3654 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457095.5 (2015-Mar-14.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06265392417384538 1.1743e-07  
q 2.601487635946277 3.2801e-07 au
tp 2456561.904629554251
(2013-Sep-26.40462955)
0.00030389 TDB
node 309.7224653495425 0.00018402 deg
peri 49.62200349288105 0.00019472 deg
i 3.305288048131623 6.3178e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      8447 days (23.13 yr)  
   first obs. used      1995-11-18  
   last obs. used      2019-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57922  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 02:12:55  

Additional Information
 Jupiter MOID = 2.3654 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.378946174671224E-14 -3.840162065487112E-14 2.054950874304694E-11 -2.328758398506851E-13 4.125255335026469E-12 -1.022806679064409E-14
q -3.840162065487112E-14 1.075881598459321E-13 -5.829304782910564E-11 6.594141050677629E-13 -1.168625680719085E-11 2.925597718537748E-14
tp 2.054950874304694E-11 -5.829304782910564E-11 9.235021875693696E-8 -5.431349227182674E-10 1.954199549264095E-8 -2.495248701136035E-11
node -2.328758398506851E-13 6.594141050677629E-13 -5.431349227182674E-10 3.386446582088596E-8 -3.391523568226398E-8 2.907828330150872E-10
peri 4.125255335026469E-12 -1.168625680719085E-11 1.954199549264095E-8 -3.391523568226398E-8 3.791736294851166E-8 -2.952486403176093E-10
i -1.022806679064409E-14 2.925597718537748E-14 -2.495248701136035E-11 2.907828330150872E-10 -2.952486403176093E-10 3.991445635006979E-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 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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