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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 | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1540037364654954 3.5018e-08  
a 2.271672346216436 9.2247e-09 au
q 1.921826316873766 7.8487e-08 au
i 6.519087610325141 3.8807e-06 deg
node 119.5285951255532 3.1099e-05 deg
peri 149.8537407571291 3.3517e-05 deg
M 173.6834714236086 1.2485e-05 deg
tp 2458397.144947598972
(2018-Oct-05.64494760)
4.2398e-05 TDB
period 1250.595794084556
3.42
7.6175e-06
2.086e-08
d
yr
n .2878627944399271 1.7534e-09 deg/d
Q 2.621518375559106 1.0645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      10428 days (28.55 yr)  
   first obs. used      1991-07-10  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:07:27  

Additional Information
 Earth MOID = .908799 au 
 Jupiter MOID = 2.47894 au 
 T_jup = 3.588 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457064.5 (2015-Feb-11.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539316705987921 3.4955e-08  
q 1.921610811948345 7.8336e-08 au
tp 2457147.396076095938
(2015-May-04.89607610)
4.1455e-05 TDB
node 119.563564155495 3.111e-05 deg
peri 149.9729518653314 3.3537e-05 deg
i 6.518241682815169 3.8802e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      876  
   data-arc span      10428 days (28.55 yr)  
   first obs. used      1991-07-10  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:07:27  

Additional Information
 Jupiter MOID = 2.47894 au 
 T_jup = 3.588 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.2218321147118E-15 -2.725003561442186E-15 2.090437330864837E-13 -4.889844391277181E-15 3.226703630205053E-14 5.742905868949136E-16
q -2.725003561442186E-15 6.136467148730278E-15 -4.619628233494468E-13 1.063259961935781E-14 -7.215702366239775E-14 -1.184541771516472E-15
tp 2.090437330864837E-13 -4.619628233494468E-13 1.718526086116908E-9 -8.822783043477657E-12 5.284146627059913E-10 -1.245819754314248E-12
node -4.889844391277181E-15 1.063259961935781E-14 -8.822783043477657E-12 9.678260986831683E-10 -9.635361012393566E-10 5.31682101421946E-13
peri 3.226703630205053E-14 -7.215702366239775E-14 5.284146627059913E-10 -9.635361012393566E-10 1.124734422755219E-9 -9.767353824745008E-13
i 5.742905868949136E-16 -1.184541771516472E-15 -1.245819754314248E-12 5.31682101421946E-13 -9.767353824745008E-13 1.505577194601589E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO502364  
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. 2019-August); 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2048-Jan-09 13:30 00:02 David 0.0284009223457338 0.0283968427455344 0.028405002037068 4.68646503968004 4.6864649261776 2469085.062299108 1.56249726675607 218.991498090426 34.4907782219493 22.1022220990507 49677.1917362498 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 01:07:43 2020-Feb-23 01:07

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