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212321 (2005 QQ126)
Classification: Main-belt Asteroid          SPK-ID: 2212321
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1587239018588674 7.8455e-08  
a 2.65170071038235 2.7517e-08 au
q 2.230812427068533 2.1874e-07 au
i 7.278870412121474 9.525e-06 deg
node 162.9782566071188 3.4128e-05 deg
peri 326.2835610738729 4.6542e-05 deg
M 14.41944951217462 2.5339e-05 deg
tp 2458937.327019949223
(2020-Mar-28.82701995)
0.0001112 TDB
period 1577.19424719217
4.32
2.455e-05
6.721e-08
d
yr
n .2282534320936669 3.5529e-09 deg/d
Q 3.072588993696167 3.1885e-08 au
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      6184 days (16.93 yr)  
   first obs. used      2003-01-31  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 00:55:37  

Additional Information
 Earth MOID = 1.24944 au 
 Jupiter MOID = 1.98757 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585296006443397 7.9349e-08  
q 2.231032642022401 2.2129e-07 au
tp 2457362.362366217453
(2015-Dec-05.86236622)
0.00011757 TDB
node 163.0000414078581 3.4116e-05 deg
peri 326.7467291847444 4.6346e-05 deg
i 7.279687331251904 9.5273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      6184 days (16.93 yr)  
   first obs. used      2003-01-31  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6036  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 00:55:37  

Additional Information
 Jupiter MOID = 1.98757 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.296202332227671E-15 -1.747954922397656E-14 6.822619343292686E-12 -4.283913288372592E-14 1.786477662904429E-12 -1.984935546358829E-14
q -1.747954922397656E-14 4.896745709582538E-14 -1.918727304774255E-11 1.180687146304953E-13 -5.054107010009399E-12 5.658942579817412E-14
tp 6.822619343292686E-12 -1.918727304774255E-11 1.382162440062024E-8 -5.221466718651122E-11 3.693355063286221E-9 -3.108949580390741E-11
node -4.283913288372592E-14 1.180687146304953E-13 -5.221466718651122E-11 1.163902154743244E-9 -1.167086776756073E-9 5.462436836095792E-11
peri 1.786477662904429E-12 -5.054107010009399E-12 3.693355063286221E-9 -1.167086776756073E-9 2.14796862806621E-9 -6.235664748760678E-11
i -1.984935546358829E-14 5.658942579817412E-14 -3.108949580390741E-11 5.462436836095792E-11 -6.235664748760678E-11 9.076979345032391E-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 16.5   n/a MPO454524  

212321 (2005 QQ126)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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