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129946 (1999 TQ191)
Classification: Main-belt Asteroid          SPK-ID: 2129946
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198344035093226 6.0935e-08  
a 2.747573508232162 1.8099e-08 au
q 2.202608691894144 1.7329e-07 au
i 12.25537681355245 6.5516e-06 deg
node 3.048954266711173 1.7082e-05 deg
peri 10.39801484875373 1.9936e-05 deg
M 200.6412341589296 1.0627e-05 deg
tp 2459736.869622547846
(2022-Jun-06.36962255)
5.2702e-05 TDB
period 1663.498476021103
4.55
1.6437e-05
4.5e-08
d
yr
n .2164113795048845 2.1383e-09 deg/d
Q 3.29253832457018 2.1689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      7512 days (20.57 yr)  
   first obs. used      1999-10-03  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:48:22  

Additional Information
 Earth MOID = 1.2038 au 
 Jupiter MOID = 2.17985 au 
 T_jup = 3.286 
[ 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 15.4   n/a MPO432778  
diameter diameter 5.456 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129946 (1999 TQ191)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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