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55740 (1989 YL2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2055740
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1651917601122141 6.9572e-08  
a 3.442808868947303 4.4272e-08 au
q 2.874085212155957 2.5156e-07 au
i 6.142830181545475 8.0044e-06 deg
node 127.8420872147207 7.2957e-05 deg
peri 316.1609366801727 7.8987e-05 deg
M 54.53550345564589 2.6411e-05 deg
tp 2457047.036460161803
(2015-Jan-24.53646016)
0.00017035 JED
period 2333.285039630037
6.39
4.5007e-05
1.232e-07
d
yr
n .1542889076497405 2.9761e-09 deg/d
Q 4.01153252573865 5.1586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      710  
   data-arc span      9484 days (25.97 yr)  
   first obs. used      1989-12-30  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58056  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 15:17:52  

Additional Information
 Earth MOID = 1.8938 au 
 Jupiter MOID = 1.24763 au 
 T_jup = 3.107 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO337701  

55740 (1989 YL2)          Discovered 1989-Dec-30 by McNaught, R. H. at Siding Spring
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 YL2 = 1990 BY2 = 2001 UQ135 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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