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181271 (2005 WE163)
Classification: Main-belt Asteroid          SPK-ID: 2181271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06562598409565745 5.8554e-08  
a 3.059160159441909 3.2799e-08 au
q 2.858399763472305 1.7891e-07 au
i 10.44496942876611 7.2159e-06 deg
node 12.24595713440409 2.6971e-05 deg
peri 26.86034536437313 5.3344e-05 deg
M 310.4529717098438 4.9387e-05 deg
tp 2459665.478061764742
(2022-Mar-26.97806176)
0.00027013 TDB
period 1954.347325701177
5.35
3.143e-05
8.605e-08
d
yr
n .1842047190208833 2.9624e-09 deg/d
Q 3.259920555411512 3.4951e-08 au
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      8111 days (22.21 yr)  
   first obs. used      1997-03-12  
   last obs. used      2019-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:56  

Additional Information
 Earth MOID = 1.86787 au 
 Jupiter MOID = 2.05746 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457293.5 (2015-Sep-28.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06984063676217196 5.8213e-08  
q 2.843187861983545 1.7908e-07 au
tp 2457716.506228948653
(2016-Nov-24.00622895)
0.00024302 TDB
node 12.53837254067818 2.7012e-05 deg
peri 27.44369514868826 5.1113e-05 deg
i 10.44120898466305 7.2119e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      342  
   data-arc span      8111 days (22.21 yr)  
   first obs. used      1997-03-12  
   last obs. used      2019-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:56  

Additional Information
 Jupiter MOID = 2.05746 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.388800492626624E-15 -1.028930980561974E-14 -3.253795391600312E-12 2.929166047609064E-15 -6.329820519710474E-13 1.998864408918945E-15
q -1.028930980561974E-14 3.206880359561437E-14 1.257810987018146E-11 -1.276045282859126E-14 2.371257784451881E-12 -4.936420870287963E-15
tp -3.253795391600312E-12 1.257810987018146E-11 5.905844155111353E-8 -2.765455983856477E-11 1.056052352159192E-8 -5.700621461423538E-12
node 2.929166047609064E-15 -1.276045282859126E-14 -2.765455983856477E-11 7.296653217545355E-10 -7.221932919474203E-10 -1.19735733496727E-11
peri -6.329820519710474E-13 2.371257784451881E-12 1.056052352159192E-8 -7.221932919474203E-10 2.61252240558129E-9 1.065159584760026E-11
i 1.998864408918945E-15 -4.936420870287963E-15 -5.700621461423538E-12 -1.19735733496727E-11 1.065159584760026E-11 5.201170050991502E-11

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 15.46   n/a MPCxxxxx  

181271 (2005 WE163)          Discovered 2005-Nov-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ 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
1912-Feb-13 20:29 00:01 Cybel 0.0472934269632951 0.0472907540117132 0.0472961203271273 4.44015007811668 4.44015004914874 2419446.353645450 1.17195447262472 2276.36190988533 97.8712789643192 -87.7042240526072 72201.5646628206 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:29:57 2021-Apr-13 21:29

Alternate Designations
 2005 WE163 = 2000 UW60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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