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27618 Ceilierin (2001 KL55)
Classification: Main-belt Asteroid          SPK-ID: 2027618
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1541942485633789 6.0452e-08  
a 2.271358986540101 1.3777e-08 au
q 1.921128494392872 1.3729e-07 au
i 6.517965383411683 7.4087e-06 deg
node 119.5587309739855 4.0918e-05 deg
peri 149.938980173274 4.6486e-05 deg
M 130.4704942088673 2.0502e-05 deg
tp 2457147.355302032584
(2015-May-04.85530203)
7.1841e-05 JED
period 1250.337037944496
3.42
1.1376e-05
3.115e-08
d
yr
n .2879223673896965 2.6196e-09 deg/d
Q 2.62158947868733 1.5901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8873 days (24.29 yr)  
   first obs. used      1991-07-10  
   last obs. used      2015-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53588  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:51:12  

Additional Information
 Earth MOID = .907892 au 
 Jupiter MOID = 2.47397 au 
 T_jup = 3.588 
[ 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 15.7 mag n/a MPO347728  
rotation period rot_per 6.4014 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

27618 Ceilierin           Discovered 2001 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ceili Erin Masterson (b. 1998) is a finalist in the 2012 Broadcom MASTERS, a math and science competition for middle-school students, for her animal and plant sciences project. She attends the Stone Middle School, Melbourne, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2001 KL55 = 1991 NS4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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