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91719 (1999 TD156)
Classification: Main-belt Asteroid          SPK-ID: 2091719
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260451178999385 7.3996e-08  
a 2.964655171679308 1.9301e-08 au
q 2.590974861032327 2.2788e-07 au
i 15.14589758802724 7.0745e-06 deg
node 204.2823645983239 1.4564e-05 deg
peri 175.1506257470103 2.1521e-05 deg
M 29.88738071765404 1.4993e-05 deg
tp 2458845.709229629504
(2019-Dec-28.20922963)
7.743e-05 TDB
period 1864.488489634116
5.10
1.8208e-05
4.985e-08
d
yr
n .1930824470097135 1.8856e-09 deg/d
Q 3.338335482326289 2.1734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      925  
   data-arc span      7359 days (20.15 yr)  
   first obs. used      1999-10-02  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:17:31  

Additional Information
 Earth MOID = 1.59408 au 
 Jupiter MOID = 2.12015 au 
 T_jup = 3.201 
[ 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 14.6   n/a MPO351489  
diameter diameter 7.784 km 0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91719 (1999 TD156)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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