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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07551545834709922 4.2147e-08  
a 2.583364124359808 1.2264e-08 au
q 2.388280198431325 1.0702e-07 au
i 8.016755031764356 4.4866e-06 deg
node 48.18587467197195 3.1232e-05 deg
peri 337.7405380563472 4.277e-05 deg
M 341.1858832796924 3.1615e-05 deg
tp 2459079.760753438478
(2020-Aug-18.26075344)
0.00013341 TDB
period 1516.620294326827
4.15
1.08e-05
2.957e-08
d
yr
n .2373698949873217 1.6903e-09 deg/d
Q 2.778448050288292 1.319e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      11497 days (31.48 yr)  
   first obs. used      1989-02-11  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:24:52  

Additional Information
 Earth MOID = 1.39523 au 
 Jupiter MOID = 2.56946 au 
 T_jup = 3.406 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456320.5 (2013-Jan-28.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07764288948400284 4.2483e-08  
q 2.38387038130194 1.0841e-07 au
tp 2456044.821735876014
(2012-Apr-27.32173588)
0.00012185 TDB
node 48.24994470103105 3.1172e-05 deg
peri 337.5774624699957 4.2049e-05 deg
i 8.025487110006715 4.4911e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      11497 days (31.48 yr)  
   first obs. used      1989-02-11  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:24:52  

Additional Information
 Jupiter MOID = 2.56946 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.804769924672469E-15 -4.581383016497222E-15 9.601193719859375E-14 1.780472400269846E-14 -1.448999276148368E-14 2.447986836432518E-17
q -4.581383016497222E-15 1.175239524548728E-14 1.051918085423447E-13 -4.574562863869482E-14 1.211269023039458E-13 5.64036255190188E-17
tp 9.601193719859375E-14 1.051918085423447E-13 1.484720215959848E-8 9.779092675144621E-12 3.457761563687179E-9 1.201008734241386E-12
node 1.780472400269846E-14 -4.574562863869482E-14 9.779092675144621E-12 9.716837475282696E-10 -9.598349038056271E-10 -2.014170856147123E-11
peri -1.448999276148368E-14 1.211269023039458E-13 3.457761563687179E-9 -9.598349038056271E-10 1.768143650182609E-9 2.024249464140885E-11
i 2.447986836432518E-17 5.64036255190188E-17 1.201008734241386E-12 -2.014170856147123E-11 2.024249464140885E-11 2.017014547753238E-11

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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