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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1538585778097186 3.0638e-08  
a 2.271574969735413 8.2921e-09 au
q 1.922073675503768 7.0222e-08 au
i 6.519066933426875 3.7829e-06 deg
node 119.5276950825033 2.743e-05 deg
peri 149.9291803011928 2.9952e-05 deg
M 287.5748814134254 1.2699e-05 deg
tp 2459648.079791559161
(2022-Mar-09.57979156)
4.4708e-05 TDB
period 1250.515383734373
3.42
6.8472e-06
1.875e-08
d
yr
n .2878813045265735 1.5763e-09 deg/d
Q 2.621076263967058 9.5679e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1091  
   data-arc span      10893 days (29.82 yr)  
   first obs. used      1991-07-10  
   last obs. used      2021-05-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50255  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 19:28:19  

Additional Information
 Earth MOID = .90891 au 
 Jupiter MOID = 2.47739 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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