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17988 Joannehsieh (1999 JR62)
Classification: Main-belt Asteroid          SPK-ID: 2017988
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07273168755585517 3.4884e-08  
a 2.379219542136443 8.1722e-09 au
q 2.206174889770991 8.3735e-08 au
i 6.014552537539005 4.153e-06 deg
node 180.9374600783413 3.4037e-05 deg
peri 46.69398962470092 4.3431e-05 deg
M 277.0333988333453 2.7321e-05 deg
tp 2459309.423539863407
(2021-Apr-04.92353986)
0.00010212 TDB
period 1340.448720171559
3.67
6.9063e-06
1.891e-08
d
yr
n .2685667825874943 1.3837e-09 deg/d
Q 2.552264194501896 8.7665e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      11078 days (30.33 yr)  
   first obs. used      1989-10-03  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51237  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:16:43  

Additional Information
 Earth MOID = 1.20207 au 
 Jupiter MOID = 2.42337 au 
 T_jup = 3.528 
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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 14.6   n/a MPO452425  
diameter diameter 2.429 km 0.811 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.520   0.265 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17988 Joannehsieh           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Joanne Charlotte Hsieh (b. 1985) was awarded first place in the 2003 Intel International Science and Engineering Fair for her biochemistry team project. She attends the Northport High School, Northport, 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: 20040614/MPCPages.arcLast Updated: 2009-12-11

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Alternate Designations
 1999 JR62 = 1989 TB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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