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JPL Small-Body Database Browser
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18737 Aliciaworley (1998 QP79)
Classification: Main-belt Asteroid          SPK-ID: 2018737
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1000158211454667 4.725e-08  
a 2.282322176633997 6.8251e-09 au
q 2.054053850019439 1.0877e-07 au
i 8.366746444807218 5.3454e-06 deg
node 196.9027578958212 1.9985e-05 deg
peri 197.1002424544247 2.7442e-05 deg
M 50.97474142912041 1.728e-05 deg
tp 2458822.173295895201
(2019-Dec-04.67329590)
6.0581e-05 TDB
period 1259.400473212665
3.45
5.6492e-06
1.547e-08
d
yr
n .2858502975480538 1.2822e-09 deg/d
Q 2.510590503248555 7.5078e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1862  
   data-arc span      12920 days (35.37 yr)  
   first obs. used      1984-08-23  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48602  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:52:34  

Additional Information
 Earth MOID = 1.06092 au 
 Jupiter MOID = 2.87646 au 
 T_jup = 3.584 
[ 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 14.2   n/a MPO502310  
diameter diameter 4.778 km 0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.796 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 144-152.]
geometric albedo albedo 0.181   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18737 Aliciaworley           Discovered 1998 Aug. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Alicia Lorraine Worley (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her computer science project. She attends the Keyser High School, Keyser, West Virginia, 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 QP79 = 1998 TU32 = 2000 AR197 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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