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JPL Small-Body Database Browser
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12855 Tewksbury (1998 HS32)
Classification: Main-belt Asteroid          SPK-ID: 2012855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1778995466216442 6.1355e-08  
a 2.561183731629492 1.3745e-08 au
q 2.105550306957875 1.5896e-07 au
i 2.20815277107427 5.8099e-06 deg
node 197.0841178302215 0.00014483 deg
peri 121.4279145692551 0.00014531 deg
M 307.1389328345007 1.7021e-05 deg
tp 2458820.333034312095
(2019-Dec-02.83303431)
7.2095e-05 TDB
period 1497.13005423406
4.10
1.2052e-05
3.3e-08
d
yr
n .2404600715761984 1.9357e-09 deg/d
Q 3.01681715630111 1.6191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1046  
   data-arc span      10067 days (27.56 yr)  
   first obs. used      1991-10-13  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56584  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:05:58  

Additional Information
 Earth MOID = 1.0926 au 
 Jupiter MOID = 2.28613 au 
 T_jup = 3.411 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO395127  

12855 Tewksbury           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Carolyn Morgan Tewksbury (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for her earth and space sciences project. She attends the Clinton High School, Deansboro, New York, 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: 20020724/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 HS32 = 1999 RE20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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