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13281 Aliciahall (1998 QW45)
Classification: Main-belt Asteroid          SPK-ID: 2013281
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260270412342274 4.0206e-08  
a 2.257688461163245 1.1104e-08 au
q 1.973158664374185 8.9578e-08 au
i 2.436801238876347 4.9574e-06 deg
node 232.4503424341881 0.0001211 deg
peri 20.83875090378261 0.00012352 deg
M 119.516101895149 2.4995e-05 deg
tp 2456989.143498247790
(2014-Nov-27.64349825)
8.5733e-05 JED
period 1239.066019411452
3.39
9.1414e-06
2.503e-08
d
yr
n .2905414193918398 2.1435e-09 deg/d
Q 2.542218257952305 1.2504e-08 au
  Orbit Determination Parameters
   # obs. used (total)      958  
   data-arc span      14121 days (38.66 yr)  
   first obs. used      1977-04-24  
   last obs. used      2015-12-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55278  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:23:32  

Additional Information
 Earth MOID = .957676 au 
 Jupiter MOID = 2.48429 au 
 T_jup = 3.610 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO350908  

13281 Aliciahall           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Alicia Esther Hall (b. 1988) is a finalist in the 2002 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany and zoology project. She attends the Valley High School, Hoople, North Dakota.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021021/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 QW45 = 1977 HE1 = 1994 JC3 = 1997 ED44 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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