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91688 (1999 TH127)
Classification: Main-belt Asteroid          SPK-ID: 2091688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06082780228975827 3.633e-08  
a 2.866690024913805 1.5993e-08 au
q 2.692315570852326 1.0541e-07 au
i 3.166284655018777 3.9104e-06 deg
node 119.9128173669232 7.6722e-05 deg
peri 298.2910940838292 8.4652e-05 deg
M 135.3756475758832 3.6683e-05 deg
tp 2458729.835121482427
(2019-Sep-03.33512148)
0.00017891 TDB
period 1772.839949901605
4.85
1.4836e-05
4.062e-08
d
yr
n .2030640160269292 1.6993e-09 deg/d
Q 3.041064478975284 1.6966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      911  
   data-arc span      22148 days (60.64 yr)  
   first obs. used      1960-10-17  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55904  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:13  

Additional Information
 Earth MOID = 1.70589 au 
 Jupiter MOID = 2.1629 au 
 T_jup = 3.295 
[ 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 15.15   n/a MPCxxxxx  
diameter diameter 2.964 km 0.530 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.242   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91688 (1999 TH127)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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