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JPL Small-Body Database Browser
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249009 (2007 QB2)
Classification: Main-belt Asteroid          SPK-ID: 2249009
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3022575660845275 5.9429e-08  
a 3.076096297763354 3.0363e-08 au
q 2.146322917759777 1.808e-07 au
i 15.41823677446599 6.8907e-06 deg
node 16.11598045097474 2.0616e-05 deg
peri 314.2734978236187 2.3251e-05 deg
M 78.99166750833511 1.4626e-05 deg
tp 2458168.108549272489
(2018-Feb-18.60854927)
7.7143e-05 TDB
period 1970.599269163155
5.40
2.9177e-05
7.988e-08
d
yr
n .1826855442572449 2.7049e-09 deg/d
Q 4.005869677766931 3.9541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      396  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53912  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:46:47  

Additional Information
 Earth MOID = 1.16654 au 
 Jupiter MOID = 1.57055 au 
 T_jup = 3.105 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456968.5 (2014-Nov-07.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3000881985715244 5.867e-08  
q 2.160645769828892 1.7691e-07 au
tp 2456181.026212518690
(2012-Sep-10.52621252)
6.753e-05 TDB
node 16.68743329657893 2.0857e-05 deg
peri 312.5179434375491 2.3281e-05 deg
i 15.26485544674025 6.8638e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      396  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53912  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:46:47  

Additional Information
 Jupiter MOID = 1.57055 au 
 T_jup = 3.105 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.442186109729487E-15 -1.029887843816539E-14 1.569721956387973E-12 2.643317678429955E-14 1.624745897353612E-13 3.759378451284028E-16
q -1.029887843816539E-14 3.129679625947045E-14 -4.566886829416326E-12 -7.041717771543638E-14 -4.299096638488558E-13 -7.991987264240982E-15
tp 1.569721956387973E-12 -4.566886829416326E-12 4.56030080342045E-9 3.526180383487252E-11 7.192009665981398E-10 -2.914734140911715E-12
node 2.643317678429955E-14 -7.041717771543638E-14 3.526180383487252E-11 4.350172593462379E-10 -4.14807426464164E-10 -3.997258537906613E-12
peri 1.624745897353612E-13 -4.299096638488558E-13 7.192009665981398E-10 -4.14807426464164E-10 5.420064563183651E-10 2.25303971496068E-12
i 3.759378451284028E-16 -7.991987264240982E-15 -2.914734140911715E-12 -3.997258537906613E-12 2.25303971496068E-12 4.711108881573198E-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 14.8   n/a MPO454844  
diameter diameter 5.785 km 0.941 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249009 (2007 QB2)          Discovered 2007-Aug-21 by La Sagra at La Sagra
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2007 QB2 = 2006 HK111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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