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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770310273374273 9.1114e-08  
a 2.636313949102411 2.4278e-08 AU
q 2.169604582308821 2.3663e-07 AU
i 13.6099453038872 8.3816e-06 deg
node 27.96642289022087 3.3248e-05 deg
peri 343.8507232301295 4.0242e-05 deg
M 151.4247410413764 2.7184e-05 deg
tp 2456342.859642015965
(2013-Feb-19.35964202)
0.00011417 JED
period 1563.486437196952
4.28
2.1597e-05
5.913e-08
d
yr
n .2302546356880555 3.1806e-09 deg/d
Q 3.103023315896001 2.8576e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      22384 days (61.28 yr)  
   first obs. used      1953-11-11  
   last obs. used      2015-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50882  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:53:47  

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
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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