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JPL Small-Body Database Browser
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233662 (2008 QB44)
Classification: Main-belt Asteroid          SPK-ID: 2233662
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596684158203752 3.7288e-08  
a 3.076075451739403 3.618e-08 au
q 2.584923357416228 1.126e-07 au
i 11.07349496818002 4.6367e-06 deg
node 101.5339417442424 2.8632e-05 deg
peri 196.5652070824059 3.5291e-05 deg
M 20.59446356064495 1.8769e-05 deg
tp 2458487.769382487010
(2019-Jan-04.26938249)
0.0001033 TDB
period 1970.579237724284
5.40
3.4766e-05
9.518e-08
d
yr
n .1826874013022408 3.2231e-09 deg/d
Q 3.567227546062579 4.1956e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      7271 days (19.91 yr)  
   first obs. used      1999-12-05  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51938  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 01:36:53  

Additional Information
 Earth MOID = 1.5704 au 
 Jupiter MOID = 1.64514 au 
 T_jup = 3.181 
[ 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 15.4   n/a MPO440206  
diameter diameter 6.308 km 0.504 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.026   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233662 (2008 QB44)          Discovered 2008-Aug-23 by Siding Spring Survey at Siding Spring
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 QB44 = 2009 WW250 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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