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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1770310283499857 9.1258e-08  
a 2.636313949578054 2.4386e-08 AU
q 2.169604580030839 2.3692e-07 AU
i 13.60994536100856 8.397e-06 deg
node 27.96642334994223 3.3546e-05 deg
peri 343.8507221906262 4.0618e-05 deg
M 151.424741326372 2.7218e-05 deg
tp 2456342.859640600247
(2013-Feb-19.35964060)
0.00011437 JED
period 1563.486437620077
4.28
2.1693e-05
5.939e-08
d
yr
n .2302546356257418 3.1948e-09 deg/d
Q 3.103023319125269 2.8703e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      22329 days (61.13 yr)  
   first obs. used      1953-11-11  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50965  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:38:56  

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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