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74991 (1999 TD269)
Classification: Main-belt Asteroid          SPK-ID: 2074991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06757690336891242 4.1244e-08  
a 2.361647749878388 1.1223e-08 au
q 2.202054908093447 9.4447e-08 au
i 6.31807104586098 4.3135e-06 deg
node 253.510730214267 5.0346e-05 deg
peri 201.6314518146562 6.6534e-05 deg
M 174.6946220900199 4.315e-05 deg
tp 2458357.222822644079
(2018-Aug-26.72282264)
0.00015806 TDB
period 1325.626290480761
3.63
9.4493e-06
2.587e-08
d
yr
n .2715697497742292 1.9358e-09 deg/d
Q 2.521240591663329 1.1981e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      7173 days (19.64 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:20  

Additional Information
 Earth MOID = 1.22 au 
 Jupiter MOID = 2.60532 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 16.0   n/a MPO267936  

74991 (1999 TD269)          Discovered 1999-Oct-03 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TD269 = 1999 RM208 = 1999 SC27 = 2001 FS135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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