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JPL Small-Body Database Browser
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91750 (1999 TR187)
Classification: Main-belt Asteroid          SPK-ID: 2091750
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08725217415837089 3.5931e-08  
a 2.709791720453226 1.4691e-08 au
q 2.473356501327329 9.7222e-08 au
i 11.35654225748903 4.3657e-06 deg
node 313.5588206902667 2.7741e-05 deg
peri 162.8668558828299 4.4827e-05 deg
M 146.2625787750738 3.4095e-05 deg
tp 2458338.538060721331
(2018-Aug-08.03806072)
0.00015476 TDB
period 1629.304639205042
4.46
1.325e-05
3.628e-08
d
yr
n .2209531547001845 1.7969e-09 deg/d
Q 2.946226939579122 1.5973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      7185 days (19.67 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51269  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:04:36  

Additional Information
 Earth MOID = 1.49139 au 
 Jupiter MOID = 2.127 au 
 T_jup = 3.330 
[ 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 14.2   n/a MPO474796  
diameter diameter 3.281 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.412   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91750 (1999 TR187)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TR187 = 2001 BR33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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