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160874 (2001 NQ18)
Classification: Main-belt Asteroid          SPK-ID: 2160874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2458900963781181 7.5219e-08  
a 3.112767563378737 2.0573e-08 au
q 2.34736884721686 2.3117e-07 au
i 9.80719411242152 5.6094e-06 deg
node 301.0626698138751 4.2834e-05 deg
peri 75.54668054906682 4.4419e-05 deg
M 37.7051030890383 9.6603e-06 deg
tp 2458390.404816101592
(2018-Sep-28.90481610)
5.3963e-05 TDB
period 2005.942432376359
5.49
1.9887e-05
5.445e-08
d
yr
n .1794667654412806 1.7792e-09 deg/d
Q 3.878166279540615 2.5632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      6681 days (18.29 yr)  
   first obs. used      2001-07-12  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54541  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:42:51  

Additional Information
 Earth MOID = 1.37106 au 
 Jupiter MOID = 1.79561 au 
 T_jup = 3.149 
[ 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 14.2   n/a MPO459736  
diameter diameter 9.248 km 0.315 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160874 (2001 NQ18)          Discovered 2001-Jul-12 by NEAT at Haleakala
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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