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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 ]

[ show orbit diagram ]
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-Aug-27 03:56 00:01 Mars 0.0869169767625895 0.0869128067324939 0.0869211523071216 19.213264391398 19.213092955266 2426215.663797398 1.26093783802988 1132.60067408672 40.7969200269804 79.614540444227 313875.503465878 T 77 CATAB v2.0f-lin.ifort 2021-Apr-14 04:01:04 2021-Apr-14 04:01
1933-Nov-01 20:31 < 00:01 Earth 0.492157453729688 0.492155411237525 0.492159497727907 22.8034893141767 22.8032518985809 2427378.355008112 0.145199753536224 1459.22275335444 36.7592825377568 86.2651517261022 1972960.21891826 T 77 CATAB v2.0f-lin.ifort 2021-Apr-14 04:01:04 2021-Apr-14 04:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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