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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1669830607421152 3.9312e-08  
a 2.76342645408709 1.3535e-08 au
q 2.301981046647897 1.0857e-07 au
i 9.612212944602597 4.4508e-06 deg
node 34.14873487377504 2.4054e-05 deg
peri 303.343045049099 2.7029e-05 deg
M 344.014476076004 1.1232e-05 deg
tp 2458675.006586544157
(2019-Jul-10.50658654)
5.2397e-05 TDB
period 1677.916299986468
4.59
1.2327e-05
3.375e-08
d
yr
n .2145518224019299 1.5763e-09 deg/d
Q 3.224871861526282 1.5795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      794  
   data-arc span      6669 days (18.26 yr)  
   first obs. used      2001-08-22  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52596  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 10:18:22  

Additional Information
 Earth MOID = 1.30953 au 
 Jupiter MOID = 2.2355 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 14.9   n/a MPO432620  
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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