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JPL Small-Body Database Browser
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91787 (1999 TZ219)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091787
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 .1089499979624015 4.9121e-08  
a 3.242837837923231 2.98e-08 au
q 2.889530662089096 1.6389e-07 au
i 12.45293040400942 6.728e-06 deg
node 345.5836986148165 2.1595e-05 deg
peri 255.9864640981382 4.0751e-05 deg
M 317.6847186672915 3.7737e-05 deg
tp 2459251.215397360353
(2021-Feb-05.71539736)
0.00022413 TDB
period 2132.977501438957
5.84
2.9402e-05
8.05e-08
d
yr
n .1687781515544048 2.3265e-09 deg/d
Q 3.596145013757365 3.3047e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      7429 days (20.34 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:04:49  

Additional Information
 Earth MOID = 1.91118 au 
 Jupiter MOID = 1.5835 au 
 T_jup = 3.137 
[ 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 13.7   n/a MPO296753  
diameter diameter 10.383 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91787 (1999 TZ219)          Discovered 1999-Oct-01 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TZ219 = 2000 XB20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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