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160721 (2000 QB159)
Classification: Main-belt Asteroid          SPK-ID: 2160721
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .286411731402791 3.9084e-08  
a 3.150397583645032 2.2152e-08 au
q 2.24808675710609 1.2511e-07 au
i 16.73031613413366 5.8018e-06 deg
node 184.5229449047955 1.5423e-05 deg
peri 79.43736835718293 1.9248e-05 deg
M 240.7197373370452 1.0306e-05 deg
tp 2459677.225530837341
(2022-Apr-07.72553084)		 6.2135e-05 TDB
period 2042.426682022264
5.59		 2.1542e-05
5.898e-08		 d
yr
n .1762609170594824 1.8591e-09 deg/d
Q 4.052708410183975 2.8497e-08 au
   Orbit Determination Parameters
   # obs. used (total)      437  
   data-arc span      7185 days (19.67 yr)  
   first obs. used      1999-04-12  
   last obs. used      2018-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57466  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:47:41  

Additional Information
 Earth MOID = 1.30527 au 
 Jupiter MOID = 1.45738 au 
 T_jup = 3.080 
[ 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 15.3   n/a MPO426994  
diameter diameter 2.502 km 0.461 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160721 (2000 QB159)          Discovered 2000-Aug-31 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 2000 QB159 = 2005 JC21 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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