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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508196296230939 6.1276e-08  
a 2.286149974533851 2.1078e-08 AU
q 1.94135368211181 1.3639e-07 AU
i 3.11018305410487 7.6085e-06 deg
node 355.5430255384434 0.00011833 deg
peri 256.7681050743664 0.00012185 deg
M 24.80239753182996 2.893e-05 deg
tp 2456713.514539667157
(2014-Feb-25.01453967)
0.00010146 JED
period 1262.570107572707
3.46
1.7461e-05
4.781e-08
d
yr
n .2851326812196596 3.9434e-09 deg/d
Q 2.630946266955892 2.4257e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      8724 days (23.89 yr)  
   first obs. used      1990-08-16  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51992  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:43:47  

Additional Information
 Earth MOID = .929832 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 15.2 mag n/a MPO263785  

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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