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JPL Small-Body Database Browser
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91704 (1999 TQ145)
Classification: Main-belt Asteroid          SPK-ID: 2091704
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07772785266564977 3.8116e-08  
a 2.858146881638809 1.8533e-08 au
q 2.635989261926002 1.0775e-07 au
i 2.522593901066973 4.3094e-06 deg
node 156.1478007397683 9.2117e-05 deg
peri 160.120797270583 9.6012e-05 deg
M 147.2185036633749 2.6981e-05 deg
tp 2458278.752745033004
(2018-Jun-09.25274503)
0.00013239 TDB
period 1764.920885096315
4.83
1.7166e-05
4.7e-08
d
yr
n .2039751487106201 1.9839e-09 deg/d
Q 3.080304501351617 1.9973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1102  
   data-arc span      7446 days (20.39 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:36:03  

Additional Information
 Earth MOID = 1.62257 au 
 Jupiter MOID = 2.13029 au 
 T_jup = 3.297 
[ 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 14.7   n/a MPO333567  
diameter diameter 5.015 km 0.493 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.111   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91704 (1999 TQ145)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 TQ145 = 2000 YT55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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