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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2688947152679843 1.692e-07  
a 2.600072951701621 5.8014e-08 au
q 1.900927075677826 4.7989e-07 au
i 5.560672050855515 5.6554e-06 deg
node 76.33444346201441 7.2342e-05 deg
peri 286.4170173872511 7.5978e-05 deg
M 38.80536878420199 2.5911e-05 deg
tp 2458835.430801993018
(2019-Dec-17.93080199)
0.00010561 TDB
period 1531.357983298075
4.19
5.1253e-05
1.403e-07
d
yr
n .2350854626588817 7.8681e-09 deg/d
Q 3.299218827725416 7.3614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      4313 days (11.81 yr)  
   first obs. used      2007-11-02  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52671  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:12  

Additional Information
 Earth MOID = .907816 au 
 Jupiter MOID = 2.17951 au 
 T_jup = 3.357 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457552.5 (2016-Jun-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2716749960208196 1.6959e-07  
q 1.892106734716319 4.8177e-07 au
tp 2457303.493205118380
(2015-Oct-07.99320512)
6.5975e-05 TDB
node 76.39481276736335 7.2533e-05 deg
peri 286.1924555590024 7.599e-05 deg
i 5.55838970506512 5.6467e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      115  
   data-arc span      4313 days (11.81 yr)  
   first obs. used      2007-11-02  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52671  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:12  

Additional Information
 Jupiter MOID = 2.17951 au 
 T_jup = 3.357 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.876074501613558E-14 -8.166394356586355E-14 -5.879681578155945E-12 -9.427272941755899E-14 -1.600206519807408E-12 -1.355769653356278E-13
q -8.166394356586355E-14 2.320982601584219E-13 1.672064905071379E-11 2.671567010906533E-13 4.568385200447891E-12 3.858944896399089E-13
tp -5.879681578155945E-12 1.672064905071379E-11 4.352730765882525E-9 -3.924159222964922E-11 1.518996930230914E-9 3.187014266512316E-11
node -9.427272941755899E-14 2.671567010906533E-13 -3.924159222964922E-11 5.261033878794548E-9 -5.253439852707162E-9 1.016303966976859E-10
peri -1.600206519807408E-12 4.568385200447891E-12 1.518996930230914E-9 -5.253439852707162E-9 5.774487625477631E-9 -9.158502686146068E-11
i -1.355769653356278E-13 3.858944896399089E-13 3.187014266512316E-11 1.016303966976859E-10 -9.158502686146068E-11 3.188519185449678E-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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