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227452 (2005 WN73)
Classification: Main-belt Asteroid          SPK-ID: 2227452
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03464155553520404 4.4806e-08  
a 2.573029876837599 2.4175e-08 au
q 2.48389611946539 1.1595e-07 au
i 4.694242086047548 5.3473e-06 deg
node 66.70316161511683 5.9115e-05 deg
peri 203.5035635678964 0.00011629 deg
M 25.69319339124593 9.7061e-05 deg
tp 2459092.907684145825
(2020-Aug-31.40768415)
0.00040734 TDB
period 1507.528983170311
4.13
2.1246e-05
5.817e-08
d
yr
n .2388013789578528 3.3655e-09 deg/d
Q 2.662163634209808 2.5013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      6810 days (18.64 yr)  
   first obs. used      2001-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60094  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:49  

Additional Information
 Earth MOID = 1.46688 au 
 Jupiter MOID = 2.34977 au 
 T_jup = 3.423 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457611.5 (2016-Aug-11.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03322813013959734 4.4992e-08  
q 2.485869512435502 1.1595e-07 au
tp 2457584.858735379885
(2016-Jul-15.35873538)
0.00043643 TDB
node 66.72550740095873 5.9072e-05 deg
peri 203.0822565511506 0.00011972 deg
i 4.696619254566507 5.3502e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      415  
   data-arc span      6810 days (18.64 yr)  
   first obs. used      2001-11-21  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60094  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:49  

Additional Information
 Jupiter MOID = 2.34977 au 
 T_jup = 3.423 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.024241791624399E-15 -5.111467864630878E-15 -4.664588923449503E-12 1.724322659631485E-14 -1.107134580088692E-12 2.419165670953787E-15
q -5.111467864630878E-15 1.344503464794534E-14 5.732498973112405E-12 -3.440416924864057E-14 1.358233379819482E-12 -6.221637420626345E-15
tp -4.664588923449503E-12 5.732498973112405E-12 1.904728129085255E-7 -3.770874942213563E-10 4.547381192925093E-8 1.04939717092371E-11
node 1.724322659631485E-14 -3.440416924864057E-14 -3.770874942213563E-10 3.489494619572102E-9 -3.566393182619872E-9 -4.224704296299512E-11
peri -1.107134580088692E-12 1.358233379819482E-12 4.547381192925093E-8 -3.566393182619872E-9 1.433378432628351E-8 4.461746130037327E-11
i 2.419165670953787E-15 -6.221637420626345E-15 1.04939717092371E-11 -4.224704296299512E-11 4.461746130037327E-11 2.862416839187878E-11

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 16.31   n/a E2021B55  

227452 (2005 WN73)          Discovered 2005-Nov-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2005 WN73 = 2007 EW164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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