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214439 (2005 QS121)
Classification: Main-belt Asteroid          SPK-ID: 2214439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0233688147245896 5.0606e-08  
a 3.167881175923509 4.4203e-08 au
q 3.093851547653838 1.578e-07 au
i 9.529474860853037 6.6315e-06 deg
node 171.9551189608658 3.0356e-05 deg
peri 64.74082117961883 0.00013799 deg
M 255.8229892175134 0.00013524 deg
tp 2459196.465531985374
(2020-Dec-12.96553199)
0.00077567 TDB
period 2059.452367688809
5.64
4.3105e-05
1.18e-07
d
yr
n .1748037515448851 3.6587e-09 deg/d
Q 3.241910804193181 4.5236e-08 au
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      8919 days (24.42 yr)  
   first obs. used      1994-09-09  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63699  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:18:08  

Additional Information
 Earth MOID = 2.09909 au 
 Jupiter MOID = 1.74156 au 
 T_jup = 3.181 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457040.5 (2015-Jan-18.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02268737350884509 5.1147e-08  
q 3.094950844534828 1.5976e-07 au
tp 2457121.608353292678
(2015-Apr-09.10835329)
0.00078563 TDB
node 171.9819352158288 3.0355e-05 deg
peri 62.139606983614 0.00014075 deg
i 9.530113904937203 6.6323e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      8919 days (24.42 yr)  
   first obs. used      1994-09-09  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63699  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:18:08  

Additional Information
 Jupiter MOID = 1.74156 au 
 T_jup = 3.181 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.61601371505389E-15 -7.881081090052304E-15 -8.206785423017207E-12 -4.120283967452404E-15 -1.490332597249035E-12 1.306114485111604E-15
q -7.881081090052304E-15 2.552380016568371E-14 3.017839873100853E-11 1.520604743685252E-14 5.418406270008004E-12 1.385844507342376E-15
tp -8.206785423017207E-12 3.017839873100853E-11 6.172115279812315E-7 1.737231349880894E-11 1.079985549276512E-7 -2.984354578963741E-11
node -4.120283967452404E-15 1.520604743685252E-14 1.737231349880894E-11 9.21448047910822E-10 -9.050155398483491E-10 1.479205569029335E-11
peri -1.490332597249035E-12 5.418406270008004E-12 1.079985549276512E-7 -9.050155398483491E-10 1.981029188111918E-8 -1.976940310392637E-11
i 1.306114485111604E-15 1.385844507342376E-15 -2.984354578963741E-11 1.479205569029335E-11 -1.976940310392637E-11 4.39878289343389E-11

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 15.6   n/a MPO433401  

214439 (2005 QS121)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2005 QS121 = 2008 CF72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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