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JPL Small-Body Database Browser
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18699 Quigley (1998 HL45)
Classification: Main-belt Asteroid          SPK-ID: 2018699
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0294126450212179 5.275e-08  
a 2.761590609714151 1.4908e-08 au
q 2.6803649254167 1.5126e-07 au
i 3.910991331914303 5.0921e-06 deg
node 328.6810203428026 6.3284e-05 deg
peri 174.0880082843514 9.8574e-05 deg
M 354.8155095842193 7.5197e-05 deg
tp 2459024.640204676649
0.00035015 TDB
period 1676.244526779608
n .2147658019153268 1.7391e-09 deg/d
Q 2.842816294011602 1.5347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1252  
   data-arc span      13119 days (35.92 yr)  
   first obs. used      1984-03-05  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:32:32  

Additional Information
 Earth MOID = 1.69229 au 
 Jupiter MOID = 2.14481 au 
 T_jup = 3.337 
[ 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 14.4   n/a MPO365476  
rotation period rot_per 216.487 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.]

18699 Quigley           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Carolyn Ann Quigley (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for her botany team project. She attends the Salpointe Catholic High School, Tucson, Arizona, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HL45 = 1988 DM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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