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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2385384851898775 5.4594e-08  
a 2.239032392570608 1.0593e-08 au
q 1.704936997355748 1.1857e-07 au
i 7.859284062483065 6.371e-06 deg
node 249.9139663325101 3.083e-05 deg
peri 134.3600222633767 3.5569e-05 deg
M 75.25711408688476 1.2322e-05 deg
tp 2458744.680261102619
(2019-Sep-18.18026110)
4.2067e-05 TDB
period 1223.739537723078
3.35
8.6845e-06
2.378e-08
d
yr
n .2941802474322481 2.0877e-09 deg/d
Q 2.773127787785469 1.312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      6351 days (17.39 yr)  
   first obs. used      2002-09-02  
   last obs. used      2020-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57265  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:37:56  

Additional Information
 Earth MOID = .720453 au 
 Jupiter MOID = 2.70958 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 18.5   n/a MPO503571  
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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