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90756 (1993 RH9)
Classification: Main-belt Asteroid          SPK-ID: 2090756
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828543531094471 3.8054e-08  
a 2.408205570616786 1.1508e-08 au
q 1.967854698847086 9.5966e-08 au
i 1.257336060152889 3.9378e-06 deg
node 274.2372646412747 0.00020643 deg
peri 168.211869306295 0.00020692 deg
M 341.9346044638081 1.6874e-05 deg
tp 2459068.998921841746
(2020-Aug-07.49892184)
6.429e-05 TDB
period 1365.0192055649
3.74
9.7846e-06
2.679e-08
d
yr
n .263732553016364 1.8905e-09 deg/d
Q 2.848556442386485 1.3613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      9543 days (26.13 yr)  
   first obs. used      1993-09-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53712  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:43:57  

Additional Information
 Earth MOID = .983831 au 
 Jupiter MOID = 2.38092 au 
 T_jup = 3.498 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO493507  

90756 (1993 RH9)          Discovered 1993-Sep-14 by Debehogne, H., Elst, E. W. at La Silla
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Alternate Designations
 1993 RH9 = 1997 UW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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