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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 
[ show covariance matrix ]

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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