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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02913507730618361 4.0291e-08  
a 2.760526132212989 1.2334e-08 au
q 2.680097989945224 1.1194e-07 au
i 3.91120730352281 4.566e-06 deg
node 328.6816581528438 6.0802e-05 deg
peri 173.5345060899618 9.6593e-05 deg
M 80.43467937945607 7.4478e-05 deg
tp 2459022.193770400299
(2020-Jun-21.69377040)
0.00034652 TDB
period 1675.275437105917
4.59
1.1228e-05
3.074e-08
d
yr
n .214890036603121 1.4402e-09 deg/d
Q 2.840954274480755 1.2694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1453  
   data-arc span      13610 days (37.26 yr)  
   first obs. used      1984-03-05  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:03:10  

Additional Information
 Earth MOID = 1.69286 au 
 Jupiter MOID = 2.14529 au 
 T_jup = 3.338 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457008.5 (2014-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02927916054605951 4.1193e-08  
q 2.679651295477202 1.145e-07 au
tp 2457367.161568024838
(2015-Dec-10.66156802)
0.00033598 TDB
node 328.7493217986437 6.0698e-05 deg
peri 178.1414046759979 9.4684e-05 deg
i 3.915681425785229 4.5675e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1453  
   data-arc span      13610 days (37.26 yr)  
   first obs. used      1984-03-05  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:03:10  

Additional Information
 Jupiter MOID = 2.14529 au 
 T_jup = 3.338 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.696857874192255E-15 -4.69077077673845E-15 3.025335643910367E-12 -1.097245437720212E-14 6.873441996332153E-13 -6.770669364658647E-16
q -4.69077077673845E-15 1.310921809929498E-14 -8.494235528100746E-12 2.984764242975098E-14 -1.93459865263839E-12 1.910586986738534E-15
tp 3.025335643910367E-12 -8.494235528100746E-12 1.128840171124663E-7 2.296772996087369E-11 2.443354665535292E-8 1.069249166180986E-12
node -1.097245437720212E-14 2.984764242975098E-14 2.296772996087369E-11 3.684254663563099E-9 -3.67037191496561E-9 5.416593458013342E-11
peri 6.873441996332153E-13 -1.93459865263839E-12 2.443354665535292E-8 -3.67037191496561E-9 8.965057866565538E-9 -5.381236161923653E-11
i -6.770669364658647E-16 1.910586986738534E-15 1.069249166180986E-12 5.416593458013342E-11 -5.381236161923653E-11 2.086226115667454E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.38   n/a E2021B10  
rotation period rot_per 216.487 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.]

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

Alternate Designations
 1998 HL45 = 1988 DM3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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