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74921 (1999 TA145)
Classification: Main-belt Asteroid          SPK-ID: 2074921
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2218617755721164 3.6234e-08  
a 2.317157730262611 9.4341e-09 au
q 1.803069001945893 8.5717e-08 au
i 2.310087682998475 4.0278e-06 deg
node 273.3660309977088 0.00011702 deg
peri 352.9605478241064 0.00011749 deg
M 27.12279181616669 1.2247e-05 deg
tp 2458903.434764444647
(2020-Feb-23.93476444)
4.3552e-05 TDB
period 1288.34395208161
3.53
7.8681e-06
2.154e-08
d
yr
n .2794284860175258 1.7065e-09 deg/d
Q 2.831246458579329 1.1527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      14211 days (38.91 yr)  
   first obs. used      1981-07-02  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:51:27  

Additional Information
 Earth MOID = .787184 au 
 Jupiter MOID = 2.26229 au 
 T_jup = 3.546 
[ 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 16.1   n/a MPO432302  

74921 (1999 TA145)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TA145 = 1981 ND1 = 2002 JW112 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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