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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508502775012355 5.6579e-08  
a 2.28602209263494 1.992e-08 AU
q 1.941175025587004 1.2263e-07 AU
i 3.110315143759506 6.8353e-06 deg
node 355.5407042317482 0.00010967 deg
peri 256.7393702447291 0.0001131 deg
M 81.85524819972682 2.496e-05 deg
tp 2456713.446338672626
(2014-Feb-24.94633867)
8.8226e-05 JED
period 1262.464171212415
3.46
1.6501e-05
4.518e-08
d
yr
n .2851566073786251 3.7271e-09 deg/d
Q 2.630869159682875 2.2925e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      623  
   data-arc span      8754 days (23.97 yr)  
   first obs. used      1990-08-16  
   last obs. used      2014-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51277  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 15:21:18  

Additional Information
 Earth MOID = .931318 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 (809)
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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