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19139 Apian (1989 GJ8)
Classification: Main-belt Asteroid          SPK-ID: 2019139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07551544845765361 4.1831e-08  
a 2.58336412162252 1.2305e-08 au
q 2.388280221448783 1.0631e-07 au
i 8.016755198752707 4.4736e-06 deg
node 48.18587317577028 3.1238e-05 deg
peri 337.7405390313298 4.2937e-05 deg
M 341.1858854161479 3.194e-05 deg
tp 2459079.760744311971
(2020-Aug-18.26074431)
0.00013479 TDB
period 1516.62029191635
4.15
1.0835e-05
2.966e-08
d
yr
n .2373698953645914 1.6959e-09 deg/d
Q 2.778448021796257 1.3234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1775  
   data-arc span      11253 days (30.81 yr)  
   first obs. used      1989-02-11  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:59:37  

Additional Information
 Earth MOID = 1.39523 au 
 Jupiter MOID = 2.56946 au 
 T_jup = 3.406 
[ 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 13.5   n/a MPO302182  
diameter diameter 5.643 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.265   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19139 Apian           Discovered 1989 Apr. 6 by F. Börngen at Tautenburg.
German mathematician and cartographer Peter Apian (1495-1552) made astronomical instruments. His major work, the Astronomicum Caesareum, is a sumptuous atlas of the skies, with revolving paper models for computations. He was the first European to illustrate that tails of comets always point away from the sun.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1989 GJ8 = 1999 XP18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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