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91668 (1999 TD112)
Classification: Main-belt Asteroid          SPK-ID: 2091668
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08584118859670696 4.0552e-08  
a 3.118117342976837 2.9985e-08 au
q 2.850454444071699 1.3572e-07 au
i 9.53090543776867 5.8346e-06 deg
node 201.3171577878452 2.6571e-05 deg
peri 93.94637097871593 4.294e-05 deg
M 43.96788004179692 3.336e-05 deg
tp 2459150.876376177374
(2020-Oct-28.37637618)
0.0001858 TDB
period 2011.115944004737
5.51
2.9009e-05
7.942e-08
d
yr
n .1790050946954016 2.5821e-09 deg/d
Q 3.385780241881974 3.2559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1999-10-04  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54987  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:38  

Additional Information
 Earth MOID = 1.85562 au 
 Jupiter MOID = 1.80331 au 
 T_jup = 3.190 
[ 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 14.62   n/a E2021B10  
diameter diameter 5.065 km 0.394 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91668 (1999 TD112)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TD112 = 2003 HH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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