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173289 (1999 TC157)
Classification: Main-belt Asteroid          SPK-ID: 2173289
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08293202089676972 5.5684e-08  
a 2.55928826295097 1.8694e-08 au
q 2.347041315247063 1.4402e-07 au
i 10.82836546166594 6.7764e-06 deg
node 359.4973880159712 3.3625e-05 deg
peri 18.52526821386741 5.526e-05 deg
M 6.560927465330973 4.7063e-05 deg
tp 2458973.245390117811
(2020-May-03.74539012)
0.00019537 TDB
period 1495.468378431913
4.09
1.6386e-05
4.486e-08
d
yr
n .240727256551878 2.6376e-09 deg/d
Q 2.771535210654877 2.0245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      243  
   data-arc span      7716 days (21.13 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62589  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:22:59  

Additional Information
 Earth MOID = 1.34975 au 
 Jupiter MOID = 2.60349 au 
 T_jup = 3.406 
[ 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 16.3   n/a MPO493969  

173289 (1999 TC157)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1999 TC157 = 1999 TM181 = 2003 QN50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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