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441857 (2009 WP162)
Classification: Main-belt Asteroid          SPK-ID: 2441857
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .238378219018992 5.4919e-08  
a 2.238763510602726 1.174e-08 au
q 1.705091052140542 1.1944e-07 au
i 7.859600384402809 6.7199e-06 deg
node 249.9145874114634 4.8085e-05 deg
peri 134.3519339386041 5.1654e-05 deg
M 317.5847033530721 1.4846e-05 deg
tp 2458744.655349873189
(2019-Sep-18.15534987)
5.0609e-05 TDB
period 1223.51910883327
3.35
9.6242e-06
2.635e-08
d
yr
n .2942332468704071 2.3144e-09 deg/d
Q 2.77243596906491 1.4539e-08 au
  Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      6263 days (17.15 yr)  
   first obs. used      2002-09-02  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5554  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:20  

Additional Information
 Earth MOID = .719927 au 
 Jupiter MOID = 2.70785 au 
 T_jup = 3.586 
[ 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 18.4   n/a MPO456093  
diameter diameter 1.352 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

441857 (2009 WP162)          Discovered 2009-Nov-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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