WDS 11387+4507 STF 1561 CD : NOTES
 
 
discov_num notes refcode
STF1561 AB: Secondary is 23.5d SB1; AB has estimated period of 2100y. Tok2006
AB: NLTT 28087/28086 Chm2004
AB: H 3 87. MEv2010
AB: B is SB2, P=23.541d Tok2014d
AC and AE: Optical pairs, based on study of relative motion of the
components using the method of apparent motion parameters. Kiy2008
AE, BC: Rectilinear solutions by Friedman et al. (2011). USN2011a
BE: Rectilinear solution by Hurowitz et al. (2014). USN2014a
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Tok2006 A j Tokovinin, A., Thomas, S., Sterzik, M., & Udry, S. 2006A&A...450..681T
Tok2006 +E2 A&A 450, 681, 2006
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
USN2011a lin - Friedman, E.A., Mason, B.D., & Hartkopf, W.I. 2011IAUDS.175....1F
USN2011a Inf. Circ. 175, 1, 2011
USN2014a lin - Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. 2014IAUDS.182....1H
USN2014a Inf. Circ. 182, 1, 2014
 
 
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
11387+4507 STF1561 CD 1991 3 72 552.9 9.46 7.56 F2 N 113900.22+450631.2
11387+4507 STF1561 CD 2009 4 73 549.9 9.46 7.56 F2 NU 113900.22+450631.2
11387+4507 STF1561 CD 2015 6 72 553.1 9.46 7.56 F2 NU 113900.22+450631.2

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