WDS 19138+3909 STF 2487 AC : NOTES
 
 
discov_num notes refcode
STF2487 eta Lyr = 20 Lyr = Aladfar. B is BD+38@3491. A is a spectroscopic
binary.
AB: H 4 2. MEv2010
AB: SEI 581. Nsn2017b
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Nsn2017b not - Nanson, J. ...................
Nsn2017b private communication, 2017
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19138+3909 STF2487 AC 1998 5 151 161.9 4.38 11.42 B2.5IV N D 191345.49+390845.5
19138+3909 STF2487 AC 2009 6 151 160.9 4.38 11.42 B2.5IV N D 191345.49+390845.5
19138+3909 STF2487 AC 2010 7 150 161.2 4.38 11.42 B2.5IV N D 191345.49+390845.5
19138+3909 STF2487 AC 2013 9 151 162.1 4.38 11.42 B2.5IV N 191345.49+390845.5
19138+3909 STF2487 AC 2014 10 151 161.5 4.38 11.42 B2.5IV N 191345.49+390845.5

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