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277499 (2005 WU121)
Classification: Main-belt Asteroid          SPK-ID: 2277499
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1721226600576995 7.2677e-08  
a 2.566920349550373 2.4033e-08 au
q 2.125095190829523 1.9355e-07 au
i 8.619013300485392 1.1149e-05 deg
node 241.6731035063039 6.0013e-05 deg
peri 209.1016473624458 8.1042e-05 deg
M 175.9483388187734 5.5326e-05 deg
tp 2458266.324840333138
(2018-May-27.82484033)
0.0002247 TDB
period 1502.162846517706
4.11
2.1096e-05
5.776e-08
d
yr
n .2396544428152695 3.3657e-09 deg/d
Q 3.008745508271223 2.817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-09-03  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:58:47  

Additional Information
 Earth MOID = 1.14588 au 
 Jupiter MOID = 2.23282 au 
 T_jup = 3.395 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456782.5 (2014-May-05.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1737097265383023 7.2515e-08  
q 2.119545741455003 1.9225e-07 au
tp 2456767.451580952028
(2014-Apr-19.95158095)
0.00021102 TDB
node 241.7333968623428 5.996e-05 deg
peri 209.1820292342099 8.0576e-05 deg
i 8.626234973448472 1.1159e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-09-03  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:58:47  

Additional Information
 Jupiter MOID = 2.23282 au 
 T_jup = 3.395 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.258495805439585E-15 -1.387456023039327E-14 -1.156146231337079E-11 -1.335265272857945E-13 -2.953738631571767E-12 2.621473124643125E-14
q -1.387456023039327E-14 3.695945286656698E-14 3.154000053682677E-11 3.64346504836815E-13 8.04999144106306E-12 -7.107810296148104E-14
tp -1.156146231337079E-11 3.154000053682677E-11 4.452819523120642E-8 4.670372690271979E-10 1.147234263908366E-8 -9.230308454852673E-11
node -1.335265272857945E-13 3.64346504836815E-13 4.670372690271979E-10 3.595170610895994E-9 -3.430413057267156E-9 -4.849610375119182E-10
peri -2.953738631571767E-12 8.04999144106306E-12 1.147234263908366E-8 -3.430413057267156E-9 6.492416612210686E-9 4.551918372768609E-10
i 2.621473124643125E-14 -7.107810296148104E-14 -9.230308454852673E-11 -4.849610375119182E-10 4.551918372768609E-10 1.245160888065285E-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 MPO470935  

277499 (2005 WU121)          Discovered 2005-Nov-30 by Mt. Lemmon Survey at Mount Lemmon
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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