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JPL Small-Body Database Browser
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20629 (1999 TB90)
Classification: Main-belt Asteroid          SPK-ID: 2020629
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1895584155618087 3.6607e-08  
a 3.048930052052245 2.0842e-08 au
q 2.470979702226439 1.1584e-07 au
i 11.14303750343512 4.9348e-06 deg
node 178.2668391803277 2.0622e-05 deg
peri 284.9921552658938 2.4876e-05 deg
M 168.8504372770298 1.1965e-05 deg
tp 2457688.448614846536
(2016-Oct-26.94861485)
6.6133e-05 TDB
period 1944.552255535756
5.32
1.9939e-05
5.459e-08
d
yr
n .1851325923359227 1.8983e-09 deg/d
Q 3.626880401878051 2.4793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1065  
   data-arc span      10929 days (29.92 yr)  
   first obs. used      1988-08-10  
   last obs. used      2018-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53872  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 18:01:19  

Additional Information
 Earth MOID = 1.51606 au 
 Jupiter MOID = 1.67514 au 
 T_jup = 3.181 
[ 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 14.1   n/a MPO350966  
diameter diameter 5.705 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.136   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20629 (1999 TB90)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TB90 = 1988 PS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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