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442444 (2011 UK189)
Classification: Main-belt Asteroid          SPK-ID: 2442444
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2688946375296135 1.688e-07  
a 2.600072986088297 5.7386e-08 au
q 1.900927302943545 4.7851e-07 au
i 5.560671209475129 5.4778e-06 deg
node 76.33441309257225 7.2248e-05 deg
peri 286.4170558623206 7.5905e-05 deg
M 38.80535578469195 2.5701e-05 deg
tp 2458835.430854015345
(2019-Dec-17.93085402)		 0.00010479 TDB
period 1531.358013677018
4.19		 5.0698e-05
1.388e-07		 d
yr
n .2350854579952774 7.7829e-09 deg/d
Q 3.29921866923305 7.2817e-08 au
   Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      4343 days (11.89 yr)  
   first obs. used      2007-11-02  
   last obs. used      2019-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5189  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:45:37  

Additional Information
 Earth MOID = .907816 au 
 Jupiter MOID = 2.17951 au 
 T_jup = 3.357 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457626.5 (2016-Aug-26.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2716454894463763 1.6919e-07  
q 1.892127828647262 4.8029e-07 au
tp 2457303.477405443518
(2015-Oct-07.97740544)		 6.5751e-05 TDB
node 76.39472872610177 7.2439e-05 deg
peri 286.1891745243179 7.5918e-05 deg
i 5.558382311061378 5.4689e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      4343 days (11.89 yr)  
   first obs. used      2007-11-02  
   last obs. used      2019-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5189  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:45:37  

Additional Information
 Jupiter MOID = 2.17951 au 
 T_jup = 3.357 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.862480090988326E-14 -8.122399725519609E-14 -5.814221504352432E-12 -7.361415333863581E-14 -1.605869018642481E-12 -1.427851349711776E-13
q -8.122399725519609E-14 2.30682716149294E-13 1.651443582391628E-11 2.079274432797248E-13 4.581112838116051E-12 4.062719755630171E-13
tp -5.814221504352432E-12 1.651443582391628E-11 4.323188623767691E-9 -4.549077163451454E-11 1.519137105632165E-9 3.387718938296572E-11
node -7.361415333863581E-14 2.079274432797248E-13 -4.549077163451454E-11 5.247464706177583E-9 -5.241785300600536E-9 1.068140378512341E-10
peri -1.605869018642481E-12 4.581112838116051E-12 1.519137105632165E-9 -5.241785300600536E-9 5.763487687596661E-9 -9.611709808744242E-11
i -1.427851349711776E-13 4.062719755630171E-13 3.387718938296572E-11 1.068140378512341E-10 -9.611709808744242E-11 2.990932406388284E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.5   n/a MPO495192  

442444 (2011 UK189)          Discovered 2007-Nov-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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