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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08725217694573116 3.5731e-08  
a 2.70979172586672 1.4485e-08 au
q 2.473356498715319 9.669e-08 au
i 11.3565441816045 4.3483e-06 deg
node 313.5588387642159 2.762e-05 deg
peri 162.8668191720784 4.4622e-05 deg
M 146.2625969599285 3.3952e-05 deg
tp 2458338.537976435821
(2018-Aug-08.03797644)
0.00015408 TDB
period 1629.304644087464
4.46
1.3064e-05
3.577e-08
d
yr
n .2209531540380698 1.7716e-09 deg/d
Q 2.946226953018121 1.5749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1158  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52664  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:36:42  

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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