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109068 (2001 QT21)
Classification: Main-belt Asteroid          SPK-ID: 2109068
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2736715010045373 9.789e-08  
a 2.54823851982752 1.4105e-08 au
q 1.850858259188742 2.5647e-07 au
i 4.610422828573003 7.7864e-06 deg
node 354.9752376177772 5.6554e-05 deg
peri 315.4991410308947 5.7149e-05 deg
M 241.7600160989134 9.8516e-06 deg
tp 2459488.500652303574
(2021-Oct-01.00065230)
4.3236e-05 TDB
period 1485.793798621044
4.07
1.2336e-05
3.377e-08
d
yr
n .2422947251052694 2.0117e-09 deg/d
Q 3.245618780466298 1.7965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      537  
   data-arc span      9734 days (26.65 yr)  
   first obs. used      1993-10-13  
   last obs. used      2020-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:14:09  

Additional Information
 Earth MOID = .840107 au 
 Jupiter MOID = 2.05817 au 
 T_jup = 3.384 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456350.5 (2013-Feb-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2757682599837821 9.8414e-08  
q 1.844732220961774 2.5844e-07 au
tp 2456513.959380902388
(2013-Aug-09.45938090)
3.1769e-05 TDB
node 355.0546212008854 5.662e-05 deg
peri 315.0116348458446 5.7197e-05 deg
i 4.61178288218095 7.787e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      537  
   data-arc span      9734 days (26.65 yr)  
   first obs. used      1993-10-13  
   last obs. used      2020-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:14:09  

Additional Information
 Jupiter MOID = 2.05817 au 
 T_jup = 3.384 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.685397942811736E-15 -2.54234378042424E-14 1.007701022312228E-12 8.912513132744539E-14 4.237382436347402E-13 -4.730688477604261E-14
q -2.54234378042424E-14 6.679055622403965E-14 -2.531784095460718E-12 -2.328004121142332E-13 -1.094802114571928E-12 1.241331528606344E-13
tp 1.007701022312228E-12 -2.531784095460718E-12 1.009261245535653E-9 1.53809520604434E-11 2.677881894563365E-10 -5.591527500671447E-12
node 8.912513132744539E-14 -2.328004121142332E-13 1.53809520604434E-11 3.205855982385756E-9 -3.188720067809834E-9 -2.280099721962034E-10
peri 4.237382436347402E-13 -1.094802114571928E-12 2.677881894563365E-10 -3.188720067809834E-9 3.271444439002589E-9 2.246295791674036E-10
i -4.730688477604261E-14 1.241331528606344E-13 -5.591527500671447E-12 -2.280099721962034E-10 2.246295791674036E-10 6.063704901987149E-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 15.5   n/a MPO432614  

109068 (2001 QT21)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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