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109887 (2001 SW9)
Classification: Main-belt Asteroid          SPK-ID: 2109887
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670754401053514 3.9183e-08  
a 2.763939264094889 1.3353e-08 au
q 2.302152895121774 1.0814e-07 au
i 9.611289835131833 4.4494e-06 deg
node 34.14762020459841 2.3763e-05 deg
peri 303.4295529972974 2.676e-05 deg
M 69.75362138107316 1.1228e-05 deg
tp 2458675.296336818041
(2019-Jul-10.79633682)		 5.2128e-05 TDB
period 1678.383378920475
4.60		 1.2163e-05
3.33e-08		 d
yr
n .2144921145677393 1.5543e-09 deg/d
Q 3.225725633068003 1.5584e-08 au
   Orbit Determination Parameters
   # obs. used (total)      815  
   data-arc span      6739 days (18.45 yr)  
   first obs. used      2001-08-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52378  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:35:08  

Additional Information
 Earth MOID = 1.31057 au 
 Jupiter MOID = 2.23823 au 
 T_jup = 3.300 
[ 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 15.0   n/a MPO502757  
diameter diameter 2.503 km 0.425 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.339   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109887 (2001 SW9)          Discovered 2001-Sep-18 by Yeung, W. K. Y. at Desert Eagle
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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