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277473 (2005 WD1)
Classification: Amor [NEO]          SPK-ID: 2277473
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4419442535464349 7.711e-08  
a 2.199098355473032 2.5881e-08 au
q 1.22721947428831 1.7258e-07 au
i 43.08370630937026 2.0061e-05 deg
node 52.30538099643821 1.1601e-05 deg
peri 285.89682350224 1.9303e-05 deg
M 276.1480439417966 2.8025e-05 deg
tp 2459477.944490392795
(2021-Sep-20.44449039)
9.7115e-05 TDB
period 1191.147126872954
3.26
2.1028e-05
5.757e-08
d
yr
n .3022296674173962 5.3353e-09 deg/d
Q 3.170977236657753 3.7319e-08 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      6149 days (16.84 yr)  
   first obs. used      2004-04-17  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 04:01:03  

Additional Information
 Earth MOID = .495578 au 
 Jupiter MOID = 3.11058 au 
 T_jup = 3.218 
[ 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 16.75   n/a E2021B55  

277473 (2005 WD1)          Discovered 2005-Nov-21 by LINEAR at Socorro
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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