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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510238297744566 5.4626e-08  
a 2.285514063054619 1.8207e-08 au
q 1.940346976248732 1.1842e-07 au
i 3.110382563971866 6.2085e-06 deg
node 355.5403770396188 0.00010297 deg
peri 256.6626321983742 0.00010592 deg
M 196.0226436308675 2.2621e-05 deg
tp 2457975.351479472257
(2017-Aug-09.85147947)
7.9399e-05 JED
period 1262.043352767265
3.46
1.508e-05
4.129e-08
d
yr
n .2852516906100199 3.4085e-09 deg/d
Q 2.630681149860507 2.0956e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      9255 days (25.34 yr)  
   first obs. used      1990-08-16  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50709  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 15:17:52  

Additional Information
 Earth MOID = .927785 au 
 Jupiter MOID = 2.40915 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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