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11707 Grigery (1998 HW17)
Classification: Main-belt Asteroid          SPK-ID: 2011707
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1614007136772269 3.8342e-08  
a 2.216665228437525 5.807e-09 au
q 1.858893878584215 8.452e-08 au
i 3.604179924582856 3.5383e-06 deg
node 309.9626244486491 6.2641e-05 deg
peri 64.2542344342948 6.3657e-05 deg
M 138.5652011482227 1.0358e-05 deg
tp 2458736.518925992848
(2019-Sep-10.01892599)
3.4748e-05 TDB
period 1205.44830345896
3.30
4.7369e-06
1.297e-08
d
yr
n .298644080353344 1.1735e-09 deg/d
Q 2.574436578290834 6.7443e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      12498 days (34.22 yr)  
   first obs. used      1986-10-29  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50546  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:02:02  

Additional Information
 Earth MOID = .861333 au 
 Jupiter MOID = 2.90489 au 
 T_jup = 3.633 
[ 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 14.63   n/a E2021B10  

11707 Grigery           Discovered 1998 Apr. 18 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Chelsea Nicole Grigery (b. 1986) is a finalist in the 2002 Intel International Science and Engineering Fair for her chemistry project. She attends the Sikeston Junior High School, Sikeston, Missouri, 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

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Alternate Designations
 1998 HW17 = 1986 UG1 = 1989 RC3 = 1994 BG5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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