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74971 (1999 TO217)
Classification: Main-belt Asteroid          SPK-ID: 2074971
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05343036164536929 3.5963e-08  
a 2.283345205348395 9.5147e-09 au
q 2.16134524526541 8.1347e-08 au
i 5.723158472782169 4.2997e-06 deg
node 188.0379808124604 3.8119e-05 deg
peri 289.8731887925775 5.8855e-05 deg
M 274.7982526573067 4.7511e-05 deg
tp 2459298.764653823058
(2021-Mar-25.26465382)
0.0001673 TDB
period 1260.247339111753
3.45
7.8772e-06
2.157e-08
d
yr
n .2856582107554658 1.7855e-09 deg/d
Q 2.40534516543138 1.0023e-08 au
  Orbit Determination Parameters
   # obs. used (total)      922  
   data-arc span      7324 days (20.05 yr)  
   first obs. used      1999-10-13  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:02  

Additional Information
 Earth MOID = 1.18483 au 
 Jupiter MOID = 2.62378 au 
 T_jup = 3.595 
[ 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 15.7   n/a MPO337823  

74971 (1999 TO217)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TO217 = 2001 FL48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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