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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539007222362888 3.0911e-08  
a 2.271814135347654 8.3228e-09 au
q 1.92218029913104 7.0757e-08 au
i 6.519119617503304 3.8084e-06 deg
node 119.5282189685992 2.7621e-05 deg
peri 149.8844438938913 3.0125e-05 deg
M 231.2087721228662 1.2571e-05 deg
tp 2459647.946799446172
(2022-Mar-09.44679945)
4.4708e-05 TDB
period 1250.712882047311
3.42
6.873e-06
1.882e-08
d
yr
n .2878358455944824 1.5817e-09 deg/d
Q 2.621447971564268 9.6037e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      10847 days (29.70 yr)  
   first obs. used      1991-07-10  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:06:10  

Additional Information
 Earth MOID = .907334 au 
 Jupiter MOID = 2.47809 au 
 T_jup = 3.588 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.73   n/a MPCxxxxx  
diameter diameter 2.675 km 0.820 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.401 h n/a LCDB (Rev. 2020-October); 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. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.142   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 2001 KL55 = 1991 NS4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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