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243956 (2001 QR194)
Classification: Main-belt Asteroid          SPK-ID: 2243956
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1889090670605964 9.4313e-08  
a 2.783133830969993 3.2723e-08 au
q 2.257374615456668 2.5794e-07 au
i 10.65443084486887 7.6721e-06 deg
node 287.9571093762049 4.2158e-05 deg
peri 67.11284845994342 4.7998e-05 deg
M 295.5921520951744 2.1255e-05 deg
tp 2458903.914163477294
(2020-Feb-24.41416348)
0.0001023 TDB
period 1695.89735420491
4.64
2.9909e-05
8.189e-08
d
yr
n .2122769984323605 3.7438e-09 deg/d
Q 3.308893046483318 3.8905e-08 au
  Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      5660 days (15.50 yr)  
   first obs. used      2001-08-22  
   last obs. used      2017-02-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60582  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 19:14:11  

Additional Information
 Earth MOID = 1.27605 au 
 Jupiter MOID = 2.21954 au 
 T_jup = 3.281 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456695.5 (2014-Feb-07.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1916810865982329 9.4113e-08  
q 2.247159528466297 2.5861e-07 au
tp 2457210.064824963497
(2015-Jul-06.56482496)
9.0981e-05 TDB
node 288.127959594065 4.2254e-05 deg
peri 67.16694787967005 4.7807e-05 deg
i 10.64692950389654 7.669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      5660 days (15.50 yr)  
   first obs. used      2001-08-22  
   last obs. used      2017-02-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60582  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 19:14:11  

Additional Information
 Jupiter MOID = 2.21954 au 
 T_jup = 3.281 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.857191950796294E-15 -2.422261418005653E-14 -1.052481767220056E-12 -5.353314183388554E-14 -7.271630059949393E-13 -3.555684667476838E-14
q -2.422261418005653E-14 6.688160599455513E-14 3.30499210332724E-12 1.489651613718426E-13 2.030853751916179E-12 9.87947918661084E-14
tp -1.052481767220056E-12 3.30499210332724E-12 8.277608037336576E-9 1.673968675555932E-11 2.033728679112462E-9 -1.101793328759076E-11
node -5.353314183388554E-14 1.489651613718426E-13 1.673968675555932E-11 1.78539527439237E-9 -1.74734241230861E-9 2.486612018960194E-11
peri -7.271630059949393E-13 2.030853751916179E-12 2.033728679112462E-9 -1.74734241230861E-9 2.285552520539902E-9 -2.515383031958877E-11
i -3.555684667476838E-14 9.87947918661084E-14 -1.101793328759076E-11 2.486612018960194E-11 -2.515383031958877E-11 5.881279816516228E-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 15.8   n/a MPO475969  

243956 (2001 QR194)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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