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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
4.2398e-05 TDB
period 1250.595794084556
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 
[ show covariance matrix ]

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] (  
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] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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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