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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1898245604985947 3.7833e-08  
a 2.762130323797311 1.2393e-08 au
q 2.237810149042645 1.0713e-07 au
i 4.384162510508665 4.2035e-06 deg
node 41.48195115901666 5.6055e-05 deg
peri 318.8707702384179 5.7245e-05 deg
M 35.87536900893137 1.1022e-05 deg
tp 2458833.406886441230
(2019-Dec-15.90688644)
5.1093e-05 TDB
period 1676.735948449247
4.59
1.1284e-05
3.089e-08
d
yr
n .2147028578548406 1.445e-09 deg/d
Q 3.286450498551976 1.4745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      690  
   data-arc span      7008 days (19.19 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:27:20  

Additional Information
 Earth MOID = 1.23715 au 
 Jupiter MOID = 2.1709 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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