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55744 (1990 RL7)
Classification: Main-belt Asteroid          SPK-ID: 2055744
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510065515780333 5.3684e-08  
a 2.285729660890917 1.7016e-08 au
q 1.940569506960152 1.1703e-07 au
i 3.11034645576653 5.825e-06 deg
node 355.5409390122034 0.00010228 deg
peri 256.6135272222025 0.00010479 deg
M 253.1283290466329 2.1597e-05 deg
tp 2457975.210464501948
(2017-Aug-09.71046450)
7.6288e-05 JED
period 1262.221934188362
3.46
1.4095e-05
3.859e-08
d
yr
n .2852113326896734 3.1848e-09 deg/d
Q 2.630889814821681 1.9585e-08 au
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      9329 days (25.54 yr)  
   first obs. used      1990-08-16  
   last obs. used      2016-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5017  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 18:01:05  

Additional Information
 Earth MOID = .929 au 
 Jupiter MOID = 2.40979 au 
 T_jup = 3.585 
[ 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 15.3 mag n/a MPO302367  

55744 (1990 RL7)          Discovered 1990-Sep-13 by Debehogne, H. at La Silla
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RL7 = 1990 QZ9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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