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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770310273312987 9.1284e-08  
a 2.636313948717079 2.4424e-08 AU
q 2.169604582007862 2.3696e-07 AU
i 13.60994494831334 8.4083e-06 deg
node 27.96642095264378 3.3645e-05 deg
peri 343.8507256135107 4.0747e-05 deg
M 151.4247407385693 2.7234e-05 deg
tp 2456342.859643475246
(2013-Feb-19.35964348)
0.00011446 JED
period 1563.486436854166
4.28
2.1727e-05
5.949e-08
d
yr
n .2302546357385375 3.1998e-09 deg/d
Q 3.103023315426297 2.8748e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      763  
   data-arc span      22065 days (60.41 yr)  
   first obs. used      1953-11-11  
   last obs. used      2014-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5083  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:30:56  

Additional Information
 Earth MOID = 1.17397 AU 
 T_jup = 3.335 
[ 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 13.4 mag n/a MPO240356  

18375 (1991 RC27)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675)
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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