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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 75 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4418323072725767 7.7651e-08  
a 2.199242764503207 3.6628e-08 au
q 1.227546259610235 1.7271e-07 au
i 43.08049770853855 2.0082e-05 deg
node 52.31034924562369 1.19e-05 deg
peri 285.8881926920108 2.0194e-05 deg
M 215.7027057839979 3.6927e-05 deg
tp 2459477.989549985812
(2021-Sep-20.48954999)
0.00013344 TDB
period 1191.264458067917
3.26
2.9761e-05
8.148e-08
d
yr
n .3021998999146465 7.5497e-09 deg/d
Q 3.170939269396179 5.2812e-08 au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      5800 days (15.88 yr)  
   first obs. used      2004-04-17  
   last obs. used      2020-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:18:08  

Additional Information
 Earth MOID = .496743 au 
 Jupiter MOID = 3.10941 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 16.9   n/a MPO310779  

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 03:57 00:02 Mars 0.0869191690645157 0.0869132604339194 0.0869250888689836 19.2133361537052 19.2131647225399 2426215.664253423 1.77413305126697 1596.89692162023 41.1799849570818 79.4593479256521 310794.735144846 T 75 CATAB v2.0f-lin.ifort 2020-Nov-11 21:18:08 2020-Nov-11 21:18
1933-Nov-01 20:31 < 00:01 Earth 0.492158505353657 0.492155628186896 0.492161385719553 22.8035772216208 22.8033398074476 2427378.355053701 0.192821784144733 2053.95717472035 37.2700965298452 86.1294446958739 1945914.32390623 T 75 CATAB v2.0f-lin.ifort 2020-Nov-11 21:18:08 2020-Nov-11 21:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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