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146489 (2001 SW2)
Classification: Main-belt Asteroid          SPK-ID: 2146489
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898772287396926 3.9544e-08  
a 2.76258307694987 1.2902e-08 au
q 2.238031458135456 1.1243e-07 au
i 4.384381308790198 4.2981e-06 deg
node 41.48814481328467 5.7184e-05 deg
peri 318.7685594127091 5.836e-05 deg
M 310.0724871970459 1.0893e-05 deg
tp 2458833.099554418185
(2019-Dec-15.59955442)
5.1057e-05 TDB
period 1677.148227291466
4.59
1.1749e-05
3.217e-08
d
yr
n .2146500793083668 1.5038e-09 deg/d
Q 3.287134695764284 1.5352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      6652 days (18.21 yr)  
   first obs. used      2001-08-16  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59612  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 12:59:24  

Additional Information
 Earth MOID = 1.23648 au 
 Jupiter MOID = 2.16652 au 
 T_jup = 3.310 
[ 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 15.7   n/a MPO359749  
diameter diameter 2.059 km 0.549 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.316   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146489 (2001 SW2)          Discovered 2001-Sep-17 by Yeung, W. K. Y. at Desert Eagle
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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