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18343 Asja (1989 TN)
Classification: Main-belt Asteroid          SPK-ID: 2018343
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1931822506395141 3.2757e-08  
a 2.41436617326712 6.4616e-09 au
q 1.947953482047467 7.794e-08 au
i 3.525322277809861 2.7938e-06 deg
node 98.74792680254443 5.6012e-05 deg
peri 222.7016028389762 5.6463e-05 deg
M 153.0250973369645 7.4763e-06 deg
tp 2458618.043766963839
(2019-May-14.54376696)
2.7734e-05 TDB
period 1370.260483685814
3.75
5.5009e-06
1.506e-08
d
yr
n .2627237698861818 1.0547e-09 deg/d
Q 2.880778864486774 7.7099e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2081  
   data-arc span      15451 days (42.30 yr)  
   first obs. used      1978-11-30  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49643  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:42:40  

Additional Information
 Earth MOID = .934993 au 
 Jupiter MOID = 2.43396 au 
 T_jup = 3.489 
[ 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 14.29   n/a MPCxxxxx  
diameter diameter 3.412 km 0.563 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.142   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18343 Asja           Discovered 1989 Oct. 2 by E. W. Elst at Smolyan.
Asja Geyer-Fischer (b. 1934) is a splendid pianist with a great love for Mozart and Chopin. She is an especially good teacher for children. In 1962 she followed her husband, astronomer E. H. Geyer to the Boyden Observatory, South Africa, where he had been appointed Director of the observatory for two years.
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 2018-05-29Last Updated: 2018-09-17

Alternate Designations
 1989 TN = 1978 WM15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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