Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05367250384909661 3.4217e-08  
a 3.066100046663797 1.8643e-08 au
q 2.901534780107519 1.0896e-07 au
i 10.00873552477408 4.7355e-06 deg
node 161.930835844066 2.1362e-05 deg
peri 307.0829061594816 4.829e-05 deg
M 233.0518899127409 4.3471e-05 deg
tp 2459692.015069225958
(2022-Apr-22.51506923)
0.00023729 TDB
period 1961.001426096297
5.37
1.7886e-05
4.897e-08
d
yr
n .1835796727168325 1.6744e-09 deg/d
Q 3.230665313220075 1.9644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1588  
   data-arc span      9847 days (26.96 yr)  
   first obs. used      1993-08-18  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:32:58  

Additional Information
 Earth MOID = 1.93028 au 
 Jupiter MOID = 1.82897 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456727.5 (2014-Mar-11.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05103945197401424 3.3313e-08  
q 2.912348087363359 1.057e-07 au
tp 2457707.837089513103
(2016-Nov-15.33708951)
0.00025428 TDB
node 162.2197243605276 2.1351e-05 deg
peri 303.0124142230645 5.1254e-05 deg
i 10.00666953421543 4.7371e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1588  
   data-arc span      9847 days (26.96 yr)  
   first obs. used      1993-08-18  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50712  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:32:58  

Additional Information
 Jupiter MOID = 1.82897 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.109780919947191E-15 -3.473111466841184E-15 1.181519407124197E-12 2.721047254889347E-15 2.329617575527538E-13 5.10921409585066E-16
q -3.473111466841184E-15 1.117213004601811E-14 -3.422353998924506E-12 -7.88253634878057E-15 -7.085656238071008E-13 -1.219266113906128E-15
tp 1.181519407124197E-12 -3.422353998924506E-12 6.465796328485151E-8 8.896346842372164E-12 1.185509985057262E-8 4.301761907220098E-12
node 2.721047254889347E-15 -7.88253634878057E-15 8.896346842372164E-12 4.558709537569186E-10 -4.470002825931859E-10 1.240928629326572E-11
peri 2.329617575527538E-13 -7.085656238071008E-13 1.185509985057262E-8 -4.470002825931859E-10 2.62694073548052E-9 -1.147094818035034E-11
i 5.10921409585066E-16 -1.219266113906128E-15 4.301761907220098E-12 1.240928629326572E-11 -1.147094818035034E-11 2.243990941141611E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-20 04:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin