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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1775333829564441 8.8388e-08  
a 2.635641140057831 2.2357e-08 au
q 2.167726852204185 2.3087e-07 au
i 13.61331632889901 8.1995e-06 deg
node 27.95845648789377 2.7278e-05 deg
peri 343.7694547595527 3.4018e-05 deg
M 289.7544082062923 2.7717e-05 deg
tp 2457905.461081104006
(2017-May-31.96108110)
0.00012275 JED
period 1562.887953451286
4.28
1.9886e-05
5.444e-08
d
yr
n .2303428081360671 2.9309e-09 deg/d
Q 3.103555427911477 2.6327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      899  
   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      .51006  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:19:42  

Additional Information
 Earth MOID = 1.17092 au 
 Jupiter MOID = 2.35734 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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