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42301 (2001 UR163)
Classification: TransNeptunian Object          SPK-ID: 2042301
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2870495680638628 1.8293e-05  
a 51.6276018709685 0.0027035 au
q 36.80792105373392 0.0018225 au
i .7532756513331287 7.5297e-06 deg
node 301.2728625930956 0.011531 deg
peri 343.8898446133298 0.013658 deg
M 80.47164212761069 0.009015 deg
tp 2428713.119172158185
(1937-Jun-28.61917216)
1.0923 TDB
period 135494.4028696782
370.96
10.643
0.02914
d
yr
n .002656936318958184 2.087e-07 deg/d
Q 66.44728268820307 0.0034796 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      12515 days (34.26 yr)  
   first obs. used      1982-07-27  
   last obs. used      2016-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .42857  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-05 18:45:47  

Additional Information
 Earth MOID = 35.7915 au 
 Jupiter MOID = 31.6127 au 
 T_jup = 6.135 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456554.5 (2013-Sep-19.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2812426063404908 1.836e-05  
q 37.11935663299283 0.0018352 au
tp 2428563.483728376748
(1937-Jan-29.98372838)
1.1375 TDB
node 302.3624402729496 0.011529 deg
peri 343.1265164067989 0.013746 deg
i .7523700873494444 7.1102e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      12515 days (34.26 yr)  
   first obs. used      1982-07-27  
   last obs. used      2016-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .42857  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-05 18:45:47  

Additional Information
 Jupiter MOID = 31.6127 au 
 T_jup = 6.135 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.370847448607712E-10 -4.872926896513276E-9 1.481515918659596E-5 3.226179022848752E-10 3.474480877161468E-8 6.521528087285021E-13
q -4.872926896513276E-9 3.36807001602885E-6 .001231015758617812 -2.542101215505572E-8 1.264533959078877E-5 2.321818510342986E-10
tp 1.481515918659596E-5 .001231015758617812 1.294012251715212 5.245271979165781E-6 .007313041983621631 1.331772702956676E-7
node 3.226179022848752E-10 -2.542101215505572E-8 5.245271979165781E-6 .0001329186031278402 -.0001329557956747154 4.173584450103934E-9
peri 3.474480877161468E-8 1.264533959078877E-5 .007313041983621631 -.0001329557956747154 .0001889567142254128 -3.147089749887367E-9
i 6.521528087285021E-13 2.321818510342986E-10 1.331772702956676E-7 4.173584450103934E-9 -3.147089749887367E-9 5.055458295182863E-11

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.1   n/a MPO389974  

42301 (2001 UR163)          Discovered 2001-Oct-21 by Deep Ecliptic Survey at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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