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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06057692319625839 4.2688e-08  
a 2.867518254742718 1.9413e-08 au
q 2.693812821661299 1.2918e-07 au
i 3.166206540361733 4.5802e-06 deg
node 119.912570935111 8.1615e-05 deg
peri 298.5532821334847 8.983e-05 deg
M 54.74171971804886 3.7355e-05 deg
tp 2458730.804531244683
(2019-Sep-04.30453124)
0.00018363 TDB
period 1773.608305548037
4.86
1.8011e-05
4.931e-08
d
yr
n .2029760454289041 2.0612e-09 deg/d
Q 3.041223687824136 2.0589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      21656 days (59.29 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:35:43  

Additional Information
 Earth MOID = 1.70785 au 
 Jupiter MOID = 2.162 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456919.5 (2014-Sep-19.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05749043607979169 4.2479e-08  
q 2.701768665439938 1.2804e-07 au
tp 2456954.853518019502
(2014-Oct-24.35351802)
0.0001934 TDB
node 119.9922959124091 8.148e-05 deg
peri 298.0943539120835 9.0702e-05 deg
i 3.16770844112211 4.5854e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      802  
   data-arc span      21656 days (59.29 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58068  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:35:43  

Additional Information
 Jupiter MOID = 2.162 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.804459878302192E-15 -5.388550654843895E-15 -5.946183144638409E-14 -4.359375978121492E-15 -1.248320272859512E-14 -3.275108650191307E-16
q -5.388550654843895E-15 1.639297792882053E-14 3.13827654092281E-13 1.259496250909378E-14 6.31298240559754E-14 1.183915670642693E-15
tp -5.946183144638409E-14 3.13827654092281E-13 3.740288694879031E-8 -1.061480812808468E-11 7.731819728010699E-9 -5.87906879457239E-13
node -4.359375978121492E-15 1.259496250909378E-14 -1.061480812808468E-11 6.638957290772717E-9 -6.630640692843707E-9 -1.44932104736131E-11
peri -1.248320272859512E-14 6.31298240559754E-14 7.731819728010699E-9 -6.630640692843707E-9 8.226925911260914E-9 1.434378719257785E-11
i -3.275108650191307E-16 1.183915670642693E-15 -5.87906879457239E-13 -1.44932104736131E-11 1.434378719257785E-11 2.102555498777959E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO337941  
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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