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249877 (2001 QG227)
Classification: Main-belt Asteroid          SPK-ID: 2249877
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1605259306043294 7.5023e-08  
a 2.751134398195412 3.0979e-08 au
q 2.309505988707512 2.0314e-07 au
i 9.060554119414999 9.5142e-06 deg
node 290.86441407 4.4478e-05 deg
peri 342.3365550125345 5.3353e-05 deg
M 8.857271218399738 2.5619e-05 deg
tp 2458559.492472949265
(2019-Mar-16.99247295)
0.00011877 TDB
period 1666.733396127379
4.56
2.8152e-05
7.708e-08
d
yr
n .2159913522081291 3.6482e-09 deg/d
Q 3.192762807683312 3.5952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6575 days (18.00 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61084  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:19:12  

Additional Information
 Earth MOID = 1.29445 au 
 Jupiter MOID = 1.9531 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457072.5 (2015-Feb-19.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601097350376007 7.486e-08  
q 2.310763332740537 2.0281e-07 au
tp 2456895.267821815012
(2014-Aug-25.76782181)
0.00012904 TDB
node 290.92729818931 4.4512e-05 deg
peri 342.7646721409702 5.3464e-05 deg
i 9.055985398990938 9.5117e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6575 days (18.00 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-08-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61084  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:19:12  

Additional Information
 Jupiter MOID = 1.9531 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.603950029992626E-15 -1.506023991072956E-14 1.783056457683119E-12 2.797791921262676E-14 2.690377491322571E-13 -1.063095217508353E-16
q -1.506023991072956E-14 4.113181192068281E-14 -6.409429056789656E-12 -7.340177858468833E-14 -1.069412677651448E-12 4.222195805149671E-15
tp 1.783056457683119E-12 -6.409429056789656E-12 1.665006827531789E-8 4.536908302622582E-11 3.853319496514794E-9 -1.252036035339139E-11
node 2.797791921262676E-14 -7.340177858468833E-14 4.536908302622582E-11 1.98128788591328E-9 -1.945352167331659E-9 1.234710903055385E-10
peri 2.690377491322571E-13 -1.069412677651448E-12 3.853319496514794E-9 -1.945352167331659E-9 2.858436366786595E-9 -1.246726276843761E-10
i -1.063095217508353E-16 4.222195805149671E-15 -1.252036035339139E-11 1.234710903055385E-10 -1.246726276843761E-10 9.04715078934374E-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 16.0   n/a MPO440261  

249877 (2001 QG227)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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