WDS 19539+4425 GIC 159 AB : NOTES
 
 
discov_num notes refcode
MCY 3 Aa,Ab: Discovery designation is per Todd Henry 03/02/98.
Aa,Ab: LSPM J1953+4424 = GJ 1245. Law et al (2008) derive a distance Law2008
of 4.54 +0.02/-0.02 pc and a projected separation of
4.6 +0.05/-0.05 au. Estimated spectral types are M5 and M8.5.
GIC 159 AB = the red dwarf binary G208-044/G208-045 = GJ 1245AB = GIC 160.
The A component is the variable star V1581 Cyg.
AB: NLTT 48414/48415 Chm2004
Both the A and B components are active M5 stars, and exhibit an
average of 3.0 and 2.6 flares per day, respectively, based on Kepler
short-cadence observations. Lur2015
 
 
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.)
Kpp2020f Hg+ j Knapp, W.R.A. 2020JDSO...16..229K
Kpp2020f +C JDSO 16, 229, 2020
Kpp2020f +orb
Law2008 Ss - Law, N.M., Hodgkin, S.T., & Mackay, C.D. 2008MNRAS.384..150L
Law2008 MNRAS 384, 150, 2008
Law2008 All measures of known pairs in Law2008 appear to be off by 90 (or 270) degrees.
Law2008 Corrected and N code code added to measure.
Lur2015 not - Lurie, J.C., Davenport, J.R.A., Hawley, S.L., Wilkinson, T.D., Wisniewski, J.P., 2015ApJ...800...95L
Lur2015 Kowalski, A.F., & Hebb, L.
Lur2015 ApJ 800, 95, 2015
 
 
DISCOVERER
 
 
idgroup discov author
1 CRC Cortes-Contreras, M., Caballero, J.A. & Montes, D.
4 CRC Cortes-Contreras, M., Bejar, V.J.S., Caballero, J.A., Gauza, B., Montes, D.,
4 CRC Alonso-Floriano, F.J., Jeffers, S.V., Morales, J.C., Reiners, A., Ribas, I.,
4 CRC Schofer, P., Quirrenbach, A., Amado, P.J., Mundt, R. & Seifert, W.
5 GIC Giclas, H., Burnham, R. & Thomas, N.
10 MCY McCarthy, D.W.
21 MCY McCarthy, D.W., Jr., Henry, T.J., Fleming, T., Saffer, R.A., Liebert, J., &
21 MCY Christou, J.C.
24 MCY McCarthy, D.W., Jr., Hancock, T., Freeman, J., McLeod, B., Lloyd-Hart, M.,
24 MCY Colucci, D., Wizinowich, P., Clampin, M., et al.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19539+4425 GIC 159 AB 2000 12 80 7.0 14.26 14.96 M6Ve N D 195354.48+442453.3
19539+4425 GIC 159 AB 2003 13 80 7.2 14.26 14.96 M6Ve N D 195354.48+442453.3
19539+4425 GIC 159 AB 2012 15 70 6.5 14.26 14.96 M5.5V+M6V N 195354.48+442453.3
19539+4425 GIC 159 AB 2016 17 70 5.9 14.26 14.96 M5.5V+M6V NZ 195354.48+442453.3
19539+4425 GIC 159 AB 2019 21 69 6.0 14.26 14.96 M5.5V+M6V NZ 195354.48+442453.3

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