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18375 (1991 RC27)
Classification: Main-belt Asteroid          SPK-ID: 2018375
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 .1774893386181955 8.9055e-08  
a 2.635378501846091 2.2548e-08 au
q 2.167626914544817 2.3256e-07 au
i 13.6136282873004 8.2707e-06 deg
node 27.96027628923295 2.773e-05 deg
peri 343.801974132024 3.4437e-05 deg
M 243.6395526626714 2.74e-05 deg
tp 2457905.586553216978
(2017-Jun-01.08655322)
0.00012292 JED
period 1562.65434964326
4.28
2.0055e-05
5.491e-08
d
yr
n .2303772424670784 2.9566e-09 deg/d
Q 3.103130089147365 2.655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      22496 days (61.59 yr)  
   first obs. used      1953-11-11  
   last obs. used      2015-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .508  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:01:13  

Additional Information
 Earth MOID = 1.17038 au 
 Jupiter MOID = 2.35842 au 
 T_jup = 3.336 
[ 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 13.5 mag n/a MPO337413  

18375 (1991 RC27)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RC27 = 1998 HU24 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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