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91707 (1999 TH146)
Classification: Main-belt Asteroid          SPK-ID: 2091707
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04014484249368422 3.6596e-08  
a 2.986100951826145 1.8701e-08 au
q 2.866224399444844 1.0488e-07 au
i 2.001540437388467 3.8304e-06 deg
node 264.7605378341519 0.0001156 deg
peri 20.55548137536809 0.00012726 deg
M 160.7899813891467 5.347e-05 deg
tp 2458554.694730606786
(2019-Mar-12.19473061)
0.00028007 TDB
period 1884.756092160434
5.16
1.7705e-05
4.847e-08
d
yr
n .1910061474253381 1.7943e-09 deg/d
Q 3.105977504207447 1.9451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      900  
   data-arc span      7805 days (21.37 yr)  
   first obs. used      1999-10-01  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57693  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:14  

Additional Information
 Earth MOID = 1.84961 au 
 Jupiter MOID = 1.95204 au 
 T_jup = 3.255 
[ 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 15.02   n/a E2021B10  

91707 (1999 TH146)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TH146 = 2000 XH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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