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172609 (2003 WA87)
Classification: Main-belt Asteroid          SPK-ID: 2172609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1644884262585095 6.0119e-08  
a 2.380737993881656 1.6515e-08 au
q 1.989134147934221 1.366e-07 au
i 23.32356625289999 9.3554e-06 deg
node 279.8700582830993 1.4251e-05 deg
peri 139.5176011011683 3.1907e-05 deg
M 187.0031604270833 2.9133e-05 deg
tp 2459645.265066962711
(2022-Mar-06.76506696)
0.00011264 TDB
period 1341.732165047682
3.67
1.3961e-05
3.822e-08
d
yr
n .2683098828350787 2.7919e-09 deg/d
Q 2.77234183982909 1.9232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      435  
   data-arc span      7075 days (19.37 yr)  
   first obs. used      1999-10-14  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53452  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:43:12  

Additional Information
 Earth MOID = 1.04054 au 
 Jupiter MOID = 2.55268 au 
 T_jup = 3.411 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO334056  
diameter diameter 2.106 km 0.416 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172609 (2003 WA87)          Discovered 2003-Nov-21 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2003 WA87 = 1999 TY206 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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