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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 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4418323080561345 7.7651e-08  
a 2.199242764482245 3.6628e-08 au
q 1.227546257875301 1.7271e-07 au
i 43.08049788134012 2.0082e-05 deg
node 52.31034927285647 1.19e-05 deg
peri 285.8881928920912 2.0194e-05 deg
M 215.7027055908101 3.6927e-05 deg
tp 2459477.989550618257
(2021-Sep-20.48955062)
0.00013344 TDB
period 1191.264458050885
3.26
2.9761e-05
8.148e-08
d
yr
n .3021998999189671 7.5497e-09 deg/d
Q 3.17093927108919 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      .55836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-05 05:06:28  

Additional Information
 Earth MOID = .496743 au 
 Jupiter MOID = 3.10941 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455504.5 (2010-Nov-04.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4424044913582584 7.818e-08  
q 1.226665934943018 1.7385e-07 au
tp 2455904.102019691109
(2011-Dec-08.60201969)
5.6108e-05 TDB
node 52.37477267580118 1.192e-05 deg
peri 285.9444596181673 2.0125e-05 deg
i 43.0612751410528 2.0084e-05 deg
  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      .55836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Mar-05 05:06:28  

Additional Information
 Jupiter MOID = 3.10941 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.112076358892347E-15 -1.34981732057925E-14 1.411360153381856E-12 2.154975397858491E-14 7.09380781955568E-13 -9.798088678451674E-14
q -1.34981732057925E-14 3.022553712954976E-14 -2.345573180635662E-12 -3.808965286578087E-14 -1.415167452198804E-12 2.189996890752553E-13
tp 1.411360153381856E-12 -2.345573180635662E-12 3.148092405626077E-9 5.441483338457521E-11 8.860605154298822E-10 -5.352545815619436E-12
node 2.154975397858491E-14 -3.808965286578087E-14 5.441483338457521E-11 1.420838006753378E-10 -8.757483184700819E-11 -7.286165030094015E-11
peri 7.09380781955568E-13 -1.415167452198804E-12 8.860605154298822E-10 -8.757483184700819E-11 4.050124564362764E-10 4.203242488366006E-11
i -9.798088678451674E-14 2.189996890752553E-13 -5.352545815619436E-12 -7.286165030094015E-11 4.203242488366006E-11 4.033740146142043E-10

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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