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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2863485425089149 3.8034e-08  
a 3.150012227036142 2.1745e-08 au
q 2.248010816939082 1.225e-07 au
i 16.73235525565146 5.6614e-06 deg
node 184.5136607783778 1.499e-05 deg
peri 79.47540908355123 1.8672e-05 deg
M 275.9290536198384 1.0446e-05 deg
tp 2459677.381221985317
(2022-Apr-07.88122199)
6.1985e-05 TDB
period 2042.051949057457
5.59
2.1145e-05
5.789e-08
d
yr
n .1762932623561139 1.8255e-09 deg/d
Q 4.052013637133203 2.7971e-08 au
  Orbit Determination Parameters
   # obs. used (total)      449  
   data-arc span      7945 days (21.75 yr)  
   first obs. used      1999-04-12  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55254  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:02:24  

Additional Information
 Earth MOID = 1.30376 au 
 Jupiter MOID = 1.4573 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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