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12354 Hemmerechts (1993 QD3)
Classification: Main-belt Asteroid          SPK-ID: 2012354
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0536724631987143 3.4964e-08  
a 3.06610003527402 1.9606e-08 au
q 2.901534893967199 1.1038e-07 au
i 10.00873627906051 4.7799e-06 deg
node 161.9308096144993 2.2467e-05 deg
peri 307.0829414064017 4.9689e-05 deg
M 233.0518801024119 4.4107e-05 deg
tp 2459692.015118811836
(2022-Apr-22.51511881)
0.00024047 TDB
period 1961.001415169369
5.37
1.8809e-05
5.15e-08
d
yr
n .1835796737397598 1.7608e-09 deg/d
Q 3.230665176580842 2.0658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1484  
   data-arc span      9121 days (24.97 yr)  
   first obs. used      1993-08-18  
   last obs. used      2018-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51693  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:16:55  

Additional Information
 Earth MOID = 1.93028 au 
 Jupiter MOID = 1.82897 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456518.5 (2013-Aug-14.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05104299586154373 3.4102e-08  
q 2.912206799698644 1.0713e-07 au
tp 2455743.152890841248
(2011-Jun-30.65289084)
0.00025926 TDB
node 162.2294783837856 2.2458e-05 deg
peri 302.841354111225 5.2673e-05 deg
i 10.00617153269777 4.7816e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1484  
   data-arc span      9121 days (24.97 yr)  
   first obs. used      1993-08-18  
   last obs. used      2018-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51693  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:16:55  

Additional Information
 Jupiter MOID = 1.82897 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.162954513984246E-15 -3.599163444376576E-15 1.057981255847017E-12 2.534441858198137E-15 1.967575912482209E-13 4.046721954260605E-16
q -3.599163444376576E-15 1.147652333837004E-14 -3.586503288019223E-12 -6.641584773135187E-15 -6.42048883891445E-13 -9.666423486399589E-16
tp 1.057981255847017E-12 -3.586503288019223E-12 6.721472329181757E-8 -7.223159074400705E-12 1.236579433693495E-8 4.344233299106482E-12
node 2.534441858198137E-15 -6.641584773135187E-15 -7.223159074400705E-12 5.043837420364677E-10 -4.976442865002195E-10 1.43201716885766E-11
peri 1.967575912482209E-13 -6.42048883891445E-13 1.236579433693495E-8 -4.976442865002195E-10 2.774485392691846E-9 -1.327968803124913E-11
i 4.046721954260605E-16 -9.666423486399589E-16 4.344233299106482E-12 1.43201716885766E-11 -1.327968803124913E-11 2.286365627228729E-11

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 13.2   n/a MPO347622  

12354 Hemmerechts           Discovered 1993 Aug. 18 by E. W. Elst at Caussols.
Kristien Hemmerechts (b. 1955) is a Flemish author well-known for her emancipated novels. In 1990 she was awarded with the triennial prize of the Flemish Community. Wit Zand ("White Sand"), a novel written in 1992, takes place in the small French sea resort Wissant, near the English Channel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

[ show close-approach data ]
Alternate Designations
 1993 QD3 = 1996 DN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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