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74860 (1999 TZ89)
Classification: Main-belt Asteroid          SPK-ID: 2074860
[ 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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953790297585421 3.926e-08  
a 2.375271875700619 9.5915e-09 au
q 1.91119356121348 9.1254e-08 au
i 2.17838631681458 5.0139e-06 deg
node 172.2747583708333 0.00011276 deg
peri 278.2479916086163 0.00011351 deg
M 171.7056997565444 1.358e-05 deg
tp 2458362.749764471399
(2018-Sep-01.24976447)		 4.8861e-05 TDB
period 1337.113940398159
3.66		 8.099e-06
2.217e-08		 d
yr
n .2692365916795401 1.6308e-09 deg/d
Q 2.839350190187758 1.1465e-08 au
   Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      15216 days (41.66 yr)  
   first obs. used      1977-09-09  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53672  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:42:13  

Additional Information
 Earth MOID = .929204 au 
 Jupiter MOID = 2.36346 au 
 T_jup = 3.515 
[ 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 15.8   n/a MPO319942  

74860 (1999 TZ89)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 TZ89 = 1977 RL9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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