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JPL Small-Body Database Browser
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172271 (2002 TW79)
Classification: Main-belt Asteroid          SPK-ID: 2172271
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2053506572723307 5.3969e-08  
a 2.802015665885887 2.0257e-08 au
q 2.226619907208853 1.5073e-07 au
i 14.74539866894188 7.2415e-06 deg
node 58.79523433961971 2.1301e-05 deg
peri 17.06109454467019 2.6151e-05 deg
M 246.8247591821997 1.6785e-05 deg
tp 2459539.083683180116
(2021-Nov-20.58368318)
8.2255e-05 TDB
period 1713.18500887472
4.69
1.8578e-05
5.086e-08
d
yr
n .2101349230439861 2.2788e-09 deg/d
Q 3.377411424562922 2.4417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      418  
   data-arc span      7088 days (19.41 yr)  
   first obs. used      1999-01-14  
   last obs. used      2018-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:34:56  

Additional Information
 Earth MOID = 1.24513 au 
 Jupiter MOID = 1.96654 au 
 T_jup = 3.246 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456660.5 (2014-Jan-03.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078186165138227 5.5217e-08  
q 2.216124255361205 1.555e-07 au
tp 2456110.211425861516
(2012-Jul-01.71142586)
6.8936e-05 TDB
node 58.93789500172038 2.1197e-05 deg
peri 15.82529376165683 2.596e-05 deg
i 14.80194170629808 7.269e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      418  
   data-arc span      7088 days (19.41 yr)  
   first obs. used      1999-01-14  
   last obs. used      2018-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65236  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:34:56  

Additional Information
 Jupiter MOID = 1.96654 au 
 T_jup = 3.246 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.048905286798343E-15 -8.544482963454744E-15 -1.641021893427281E-12 -1.528232423886036E-14 -3.686424434770621E-13 -3.771707787022517E-15
q -8.544482963454744E-15 2.417924431037989E-14 4.720945956687229E-12 4.35506418012819E-14 1.074942487389671E-12 1.091990950627373E-14
tp -1.641021893427281E-12 4.720945956687229E-12 4.75219076988464E-9 2.192400792425206E-11 1.060542923486722E-9 -4.138290886826992E-12
node -1.528232423886036E-14 4.35506418012819E-14 2.192400792425206E-11 4.493271892013031E-10 -4.287503630590415E-10 -4.764591253942915E-11
peri -3.686424434770621E-13 1.074942487389671E-12 1.060542923486722E-9 -4.287503630590415E-10 6.73932533582742E-10 4.521855041420932E-11
i -3.771707787022517E-15 1.091990950627373E-14 -4.138290886826992E-12 -4.764591253942915E-11 4.521855041420932E-11 5.28384255794716E-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 15.4   n/a MPO439989  

172271 (2002 TW79)          Discovered 2002-Oct-01 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 TW79 = 1999 AY23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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