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181557 (2006 UJ282)
Classification: Main-belt Asteroid          SPK-ID: 2181557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1183304119016723 5.0322e-08  
a 3.000827590627962 2.8454e-08 au
q 2.645738425783052 1.4998e-07 au
i 1.295578456942281 5.9902e-06 deg
node 161.8986208498181 0.00022287 deg
peri 308.3599031921452 0.00022412 deg
M 212.9294198983716 2.3561e-05 deg
tp 2459976.181257484174
(2023-Jan-31.68125748)
0.000127 TDB
period 1898.715926063113
5.20
2.7006e-05
7.394e-08
d
yr
n .1896018225045602 2.6968e-09 deg/d
Q 3.355916755472871 3.1821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1995-09-23  
   last obs. used      2019-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:05  

Additional Information
 Earth MOID = 1.66254 au 
 Jupiter MOID = 1.74947 au 
 T_jup = 3.242 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457035.5 (2015-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1200061107020041 4.9752e-08  
q 2.636363907045161 1.4818e-07 au
tp 2456170.175681321454
(2012-Aug-30.67568132)
0.00011747 TDB
node 162.3432320279992 0.00022497 deg
peri 305.5133686908371 0.00022616 deg
i 1.28902168237736 5.9681e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1995-09-23  
   last obs. used      2019-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:05  

Additional Information
 Jupiter MOID = 1.74947 au 
 T_jup = 3.242 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.475254326872773E-15 -7.282518014945234E-15 1.240784291795972E-12 -9.549835291773289E-15 2.597189533324239E-13 -1.562412512521343E-16
q -7.282518014945234E-15 2.195770666539405E-14 -3.804712688802563E-12 2.31648196384198E-14 -7.42059671823378E-13 5.77452771404057E-16
tp 1.240784291795972E-12 -3.804712688802563E-12 1.379872329076861E-8 -2.115052659416466E-11 2.735100662930652E-9 -4.521783521195858E-13
node -9.549835291773289E-15 2.31648196384198E-14 -2.115052659416466E-11 5.061347757032794E-8 -5.060499753218293E-8 -1.650874177049726E-10
peri 2.597189533324239E-13 -7.42059671823378E-13 2.735100662930652E-9 -5.060499753218293E-8 5.114963304938621E-8 1.649696955853695E-10
i -1.562412512521343E-16 5.77452771404057E-16 -4.521783521195858E-13 -1.650874177049726E-10 1.649696955853695E-10 3.561764481433108E-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 16.16   n/a MPCxxxxx  

181557 (2006 UJ282)          Discovered 2006-Oct-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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