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442455 (2011 UP243)
Classification: Main-belt Asteroid          SPK-ID: 2442455
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2052284034678558 8.7013e-08  
a 2.611780605915591 2.1639e-08 au
q 2.075769041955226 2.3866e-07 au
i .3699906761193703 6.59e-06 deg
node 67.32354118115789 0.0013262 deg
peri 335.8860816469095 0.0013265 deg
M 63.61080194419822 2.6373e-05 deg
tp 2458928.084486664129
(2020-Mar-19.58448666)		 0.00011083 TDB
period 1541.712756379711
4.22		 1.916e-05
5.246e-08		 d
yr
n .2335065325951905 2.902e-09 deg/d
Q 3.147792169875957 2.608e-08 au
   Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      9100 days (24.91 yr)  
   first obs. used      1994-10-26  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58441  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:57  

Additional Information
 Earth MOID = 1.08367 au 
 Jupiter MOID = 2.25956 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457214.5 (2015-Jul-11.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204907092857028 8.802e-08  
q 2.076732423315911 2.4172e-07 au
tp 2457380.927132630293
(2015-Dec-24.42713263)		 9.9962e-05 TDB
node 66.93267683929626 0.0013062 deg
peri 335.3120225174242 0.0013066 deg
i .3747989494090365 6.6372e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      9100 days (24.91 yr)  
   first obs. used      1994-10-26  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58441  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:57  

Additional Information
 Jupiter MOID = 2.25956 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.747483504007346E-15 -2.12433350507743E-14 -4.619028029962662E-12 -1.08417947836197E-13 -1.008849106982537E-12 -2.196320702115432E-15
q -2.12433350507743E-14 5.842827106832565E-14 1.302274833134908E-11 2.733367566141867E-13 2.893693633430979E-12 6.154142319165406E-15
tp -4.619028029962662E-12 1.302274833134908E-11 9.992399784283131E-9 -9.394136940628659E-12 2.96805116030586E-9 2.624735882867171E-12
node -1.08417947836197E-13 2.733367566141867E-13 -9.394136940628659E-12 1.706238646228272E-6 -1.706206457737096E-6 -5.20509187052754E-9
peri -1.008849106982537E-12 2.893693633430979E-12 2.96805116030586E-9 -1.706206457737096E-6 1.707080151061987E-6 5.2057129637734E-9
i -2.196320702115432E-15 6.154142319165406E-15 2.624735882867171E-12 -5.20509187052754E-9 5.2057129637734E-9 4.40527064870078E-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 18.1   n/a MPO495192  

442455 (2011 UP243)          Discovered 1994-Oct-26 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 UP243 = 1994 UK4 = 2011 WM79 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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