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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06306314392678772 6.27e-08  
a 2.931486000930474 3.3678e-08 au
q 2.746617277334432 1.7965e-07 au
i 9.874515436204755 5.9017e-06 deg
node 217.38718997 3.8202e-05 deg
peri 172.8742584930182 6.5516e-05 deg
M 145.1838550202484 5.6294e-05 deg
tp 2457861.156963399943
(2017-Apr-17.65696340)
0.00028181 TDB
period 1833.285754389837
5.02
3.1592e-05
8.649e-08
d
yr
n .1963687325546349 3.3839e-09 deg/d
Q 3.116354724526516 3.5802e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6438 days (17.63 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59309  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:04:59  

Additional Information
 Earth MOID = 1.75184 au 
 Jupiter MOID = 2.22414 au 
 T_jup = 3.251 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457046.5 (2015-Jan-24.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06341503187802439 6.2354e-08  
q 2.74571801071069 1.7844e-07 au
tp 2457865.613019652470
(2017-Apr-22.11301965)
0.00028215 TDB
node 217.40636124433 3.82e-05 deg
peri 173.8873397702465 6.5555e-05 deg
i 9.874676384333625 5.9019e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6438 days (17.63 yr)  
   first obs. used      2001-08-24  
   last obs. used      2019-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59309  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:04:59  

Additional Information
 Jupiter MOID = 2.22414 au 
 T_jup = 3.251 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.888064923866445E-15 -1.096087579900021E-14 -6.283085976977589E-12 -2.633434393081782E-14 -1.141339608498789E-12 -1.305980515855854E-15
q -1.096087579900021E-14 3.184124328727777E-14 2.155272494070436E-11 6.652856924421938E-14 3.880437211745725E-12 6.970124187489863E-15
tp -6.283085976977589E-12 2.155272494070436E-11 7.960610287103382E-8 2.562741798441844E-12 1.508290139490219E-8 2.939092986150712E-11
node -2.633434393081782E-14 6.652856924421938E-14 2.562741798441844E-12 1.459249022422422E-9 -1.436389268401527E-9 -8.491756898466119E-11
peri -1.141339608498789E-12 3.880437211745725E-12 1.508290139490219E-8 -1.436389268401527E-9 4.297415816345917E-9 8.910852193982485E-11
i -1.305980515855854E-15 6.970124187489863E-15 2.939092986150712E-11 -8.491756898466119E-11 8.910852193982485E-11 3.483188182873512E-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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