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227443 (2005 WW37)
Classification: Main-belt Asteroid          SPK-ID: 2227443
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2197270108104874 5.5227e-08  
a 2.581000209924675 2.0799e-08 au
q 2.013884748896686 1.4816e-07 au
i 12.35139201203918 4.7621e-06 deg
node 79.63537331831284 2.6207e-05 deg
peri 266.99954597 2.7993e-05 deg
M 292.0523226676837 1.2682e-05 deg
tp 2459486.359481512621
(2021-Sep-28.85948151)
5.4596e-05 TDB
period 1514.539089264779
4.15
1.8307e-05
5.012e-08
d
yr
n .237696077012287 2.8732e-09 deg/d
Q 3.148115670952665 2.5369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      6770 days (18.54 yr)  
   first obs. used      2001-11-12  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51093  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:47  

Additional Information
 Earth MOID = 1.05036 au 
 Jupiter MOID = 2.39607 au 
 T_jup = 3.358 
[ 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 16.19   n/a E2021B55  
diameter diameter 3.190 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227443 (2005 WW37)          Discovered 2005-Nov-22 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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