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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455504.5 (2010-Nov-04.0) TDB
Reference: JPL 75 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4424044905679588 7.818e-08  
q 1.226665936694231 1.7385e-07 au
tp 2455904.102019019006
(2011-Dec-08.60201902)
5.6108e-05 TDB
node 52.3747726484731 1.192e-05 deg
peri 285.9444594188435 2.0125e-05 deg
i 43.06127496865945 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      .55837  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:18:08  

Additional Information
 Jupiter MOID = 3.10941 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.112076369561872E-15 -1.349817323465031E-14 1.411360165757871E-12 2.154975681343057E-14 7.093807884624689E-13 -9.798089136090631E-14
q -1.349817323465031E-14 3.022553720976862E-14 -2.345573199372165E-12 -3.808965913431316E-14 -1.415167464389031E-12 2.189996995339469E-13
tp 1.411360165757871E-12 -2.345573199372165E-12 3.148092443808644E-9 5.441483402705411E-11 8.860605286786305E-10 -5.352549451142247E-12
node 2.154975681343057E-14 -3.808965913431316E-14 5.441483402705411E-11 1.420838012718203E-10 -8.757483203129148E-11 -7.286165080094325E-11
peri 7.093807884624689E-13 -1.415167464389031E-12 8.860605286786305E-10 -8.757483203129148E-11 4.050124615036626E-10 4.203242382719594E-11
i -9.798089136090631E-14 2.189996995339469E-13 -5.352549451142247E-12 -7.286165080094325E-11 4.203242382719594E-11 4.033740180428446E-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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