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243960 (2001 QQ227)
Classification: Main-belt Asteroid          SPK-ID: 2243960
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06259625217431856 5.2883e-08  
a 2.932954120436233 2.9039e-08 au
q 2.7493621846977 1.5968e-07 au
i 9.871476532402065 4.8094e-06 deg
node 217.3819222730011 2.6838e-05 deg
peri 172.5069828082952 5.7103e-05 deg
M 224.1162884716792 5.5146e-05 deg
tp 2459693.002317248441
(2022-Apr-23.50231725)
0.00028806 TDB
period 1834.663120439418
5.02
2.7247e-05
7.46e-08
d
yr
n .1962213095087325 2.9142e-09 deg/d
Q 3.116546056174767 3.0857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      395  
   data-arc span      6935 days (18.99 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54191  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:53:18  

Additional Information
 Earth MOID = 1.75521 au 
 Jupiter MOID = 2.22058 au 
 T_jup = 3.251 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457722.5 (2016-Nov-30.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06321194721567862 5.2752e-08  
q 2.747738652298571 1.5906e-07 au
tp 2457863.843977653940
(2017-Apr-20.34397765)
0.00026846 TDB
node 217.3904724240124 2.6826e-05 deg
peri 173.467140987942 5.6788e-05 deg
i 9.873588408988871 4.8105e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      395  
   data-arc span      6935 days (18.99 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54191  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:53:18  

Additional Information
 Jupiter MOID = 2.22058 au 
 T_jup = 3.251 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.782800207273919E-15 -8.266949628614665E-15 -3.366511702683436E-12 -2.514687319417755E-14 -4.942533857363012E-13 4.017243654210237E-17
q -8.266949628614665E-15 2.529895386333503E-14 1.446335778389511E-11 6.692844724867648E-14 2.300620706594135E-12 3.17667603016773E-15
tp -3.366511702683436E-12 1.446335778389511E-11 7.206836175483384E-8 -4.708077673294475E-11 1.344709147829023E-8 3.266149728386433E-11
node -2.514687319417755E-14 6.692844724867648E-14 -4.708077673294475E-11 7.196400918057542E-10 -7.183905092618973E-10 7.320560445808404E-12
peri -4.942533857363012E-13 2.300620706594135E-12 1.344709147829023E-8 -7.183905092618973E-10 3.224873717115486E-9 -1.100342415873152E-12
i 4.017243654210237E-17 3.17667603016773E-15 3.266149728386433E-11 7.320560445808404E-12 -1.100342415873152E-12 2.314105055924064E-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 15.4   n/a MPO396769  
diameter diameter 5.447 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243960 (2001 QQ227)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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