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JPL Small-Body Database Browser
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74829 (1999 TR21)
Classification: Main-belt Asteroid          SPK-ID: 2074829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09221216773461194 4.8207e-08  
a 2.353368097196918 1.1648e-08 au
q 2.136358923476911 1.1249e-07 au
i 7.53589388172603 5.0312e-06 deg
node 55.79638110283913 4.0975e-05 deg
peri 3.013692471373492 5.2432e-05 deg
M 132.7750896368533 3.1773e-05 deg
tp 2458114.151789741098
(2017-Dec-26.65178974)
0.00011612 TDB
period 1318.66117486399
3.61
9.7902e-06
2.68e-08
d
yr
n .2730041703374874 2.0269e-09 deg/d
Q 2.570377270916925 1.2722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      9153 days (25.06 yr)  
   first obs. used      1994-04-15  
   last obs. used      2019-05-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62166  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:42:09  

Additional Information
 Earth MOID = 1.14818 au 
 Jupiter MOID = 2.7042 au 
 T_jup = 3.539 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO432301  

74829 (1999 TR21)          Discovered 1999-Oct-02 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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