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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601459156427062 7.2975e-08  
a 2.750190322114543 2.8638e-08 au
q 2.3097585747878 1.9475e-07 au
i 9.061484958702305 8.1197e-06 deg
node 290.8647373415159 4.2343e-05 deg
peri 342.305834753265 4.9276e-05 deg
M 95.33584198194927 2.2724e-05 deg
tp 2458559.339869221598
(2019-Mar-16.83986922)
0.00010574 TDB
period 1665.875538292251
4.56
2.602e-05
7.124e-08
d
yr
n .2161025789291852 3.3754e-09 deg/d
Q 3.190622069441285 3.3224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      7005 days (19.18 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58872  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:38  

Additional Information
 Earth MOID = 1.29522 au 
 Jupiter MOID = 1.95624 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457574.5 (2016-Jul-05.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603488145393112 7.2685e-08  
q 2.309404773427503 1.9413e-07 au
tp 2456895.055364256738
(2014-Aug-25.55536426)
0.00011226 TDB
node 290.9133554225319 4.2386e-05 deg
peri 342.6707435808239 4.9343e-05 deg
i 9.056193213654717 8.1163e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      7005 days (19.18 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58872  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:14:38  

Additional Information
 Jupiter MOID = 1.95624 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.283178509162355E-15 -1.40095023958211E-14 9.869279319349473E-13 3.594677110163546E-14 5.583387396018106E-14 -9.183770800835523E-16
q -1.40095023958211E-14 3.768520397660057E-14 -3.702525121966595E-12 -9.624781461231596E-14 -3.517317005772494E-13 5.348971518736149E-15
tp 9.869279319349473E-13 -3.702525121966595E-12 1.260294911882426E-8 4.581226923920852E-11 2.860460735427553E-9 -1.099605045963231E-11
node 3.594677110163546E-14 -9.624781461231596E-14 4.581226923920852E-11 1.796574742639169E-9 -1.763162886491702E-9 9.891755877955432E-11
peri 5.583387396018106E-14 -3.517317005772494E-13 2.860460735427553E-9 -1.763162886491702E-9 2.434741366966196E-9 -1.000670389271756E-10
i -9.183770800835523E-16 5.348971518736149E-15 -1.099605045963231E-11 9.891755877955432E-11 -1.000670389271756E-10 6.587486512118347E-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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