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JPL Small-Body Database Browser
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193878 (2001 QT178)
Classification: Main-belt Asteroid          SPK-ID: 2193878
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2517897791891979 4.541e-08  
a 2.281650480232314 8.614e-09 au
q 1.707154209627692 1.0708e-07 au
i 3.086184443895589 5.1637e-06 deg
node 163.36702979076 8.985e-05 deg
peri 214.5814706463759 9.0397e-05 deg
M 150.7706025884055 1.1628e-05 deg
tp 2458473.286804122270
(2018-Dec-20.78680412)
3.9178e-05 TDB
period 1258.844544344739
3.45
7.1288e-06
1.952e-08
d
yr
n .2859765342887428 1.6195e-09 deg/d
Q 2.856146750836936 1.0783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      8259 days (22.61 yr)  
   first obs. used      1996-03-27  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61582  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:39:51  

Additional Information
 Earth MOID = .710011 au 
 Jupiter MOID = 2.6055 au 
 T_jup = 3.560 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456449.5 (2013-Jun-06.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2519520887882475 4.5465e-08  
q 1.706552962063711 1.0722e-07 au
tp 2455953.280622587517
(2012-Jan-26.78062259)
3.4444e-05 TDB
node 163.4189873028915 8.9732e-05 deg
peri 214.1951113756546 9.028e-05 deg
i 3.086411019816681 5.1712e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      486  
   data-arc span      8259 days (22.61 yr)  
   first obs. used      1996-03-27  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61582  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:39:51  

Additional Information
 Jupiter MOID = 2.6055 au 
 T_jup = 3.560 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.067056724898019E-15 -4.868285651980035E-15 -2.803642235393076E-13 -1.485653483378832E-14 -7.864351334925158E-14 -1.824533241308594E-15
q -4.868285651980035E-15 1.149612359066599E-14 6.737671782086249E-13 3.558865166695927E-14 1.935554740924673E-13 4.391499433208416E-15
tp -2.803642235393076E-13 6.737671782086249E-13 1.186367043758719E-9 1.698172093351321E-11 3.616283632956761E-10 -4.1854083808504E-14
node -1.485653483378832E-14 3.558865166695927E-14 1.698172093351321E-11 8.051801543352613E-9 -8.033938356413203E-9 -7.26344129084139E-11
peri -7.864351334925158E-14 1.935554740924673E-13 3.616283632956761E-10 -8.033938356413203E-9 8.150486102358103E-9 7.254284820568182E-11
i -1.824533241308594E-15 4.391499433208416E-15 -4.1854083808504E-14 -7.26344129084139E-11 7.254284820568182E-11 2.674132308252747E-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 16.6   n/a MPO299991  

193878 (2001 QT178)          Discovered 2001-Aug-27 by NEAT at Palomar
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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