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19142 Langemarck (1989 SU4)
Classification: Main-belt Asteroid          SPK-ID: 2019142
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1806075825008782 3.681e-08  
a 2.331059280946911 9.5792e-09 au
q 1.910052299548854 8.4331e-08 au
i 3.597726486675731 3.6267e-06 deg
node 129.4168689900774 6.5725e-05 deg
peri 223.2939405300207 6.6807e-05 deg
M 348.6005100836083 1.5528e-05 deg
tp 2459437.663407850351
(2021-Aug-11.16340785)
5.6234e-05 TDB
period 1299.95525543805
3.56
8.013e-06
2.194e-08
d
yr
n .2769326086371255 1.707e-09 deg/d
Q 2.752066262344968 1.1309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      968  
   data-arc span      11580 days (31.70 yr)  
   first obs. used      1989-09-26  
   last obs. used      2021-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54752  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:45:34  

Additional Information
 Earth MOID = .905543 au 
 Jupiter MOID = 2.67933 au 
 T_jup = 3.546 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.55   n/a MPO614063  
diameter diameter 1.980 km 0.396 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19142 Langemarck           Discovered 1989 Sept. 26 by E. W. Elst at the European Southern Observatory.
Langemarck is a village in West Flanders. In 1102 a parish church was erected there under the patronage of Count Robert II of Jerusalem.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-06-13Last Updated: 2015-02-04

Alternate Designations
 1989 SU4 = 1999 JX120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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