19539+4425 MCY   3Aa,Ab

 
 
19h 53m 54.48s +44 24' 53.3" P.A. 288.00 sep 0.8 mag 13.50,16.80 Sp M5.5V+M7V
 
 
Coord 2000
19539+4425
Discov num
MCY   3
Comp
Aa,Ab
Coord arcsec 2000
19 53 54.48 +44 24 53.3
Date first
1986
Date last
2016
Obs
20
Pa first
265
Pa last
236
P.A. Now (θ)
288°
Sep first
0.8
Sep last
0.5
Sep. Now (ρ)
0.75"
Mag pri
13.50
Mag sec
16.80
delta mag (ΔM)
3.3
Spectral class
M5.5V+M7V (red/red)
Pri motion ra
+443
Sec motion ra
Pri motion dec
-581
Sec motion dec
Notes
N O (See Notes, Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
19539+4425 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 19539+4425 MCY 3 Aa,Ab 1986 2016 20 288 0.8 13.50 16.80 3.30 Y <===
Show 19539+4425 GIC 159 AB 1954 2019 21 69 6.0 14.26 14.96 0.70
Show 19539+4425 CRC 36 BC 2012 2012 2 112 14.9 7.80
Quadruple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
236.3
Precise sep
0.536
Constellation
Cygnus
last precise pa
236.3
last precise sep
0.536
 
 
ORBITAL ELEMENTS
 
 
Period (P)6147d (16.83y)± 17 Periastron (T)51506.8d (1999.897y)± 2.1 Semi-major axis (a)0.8267a± 0.0008
Eccentricity (e)0.334± 0.002 Inclination (i)135.7°± 0.1 Longitude of periastron (ω)216.1°± 0.2
Node (Ω)261.2°± 0.2 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.490 49.5
2001 0.431 0.3
2002 0.544 316.1
2003 0.724 291.1
2004 0.878 275.7
2005 0.983 264.4
2006 1.039 254.8
2007 1.049 245.8
2008 1.021 236.6
2009 0.960 226.6
2010 0.876 214.9
2011 0.781 200.5
2012 0.691 182.2
2013 0.628 159.2
2014 0.607 133.0
2015 0.607 106.3
2016 0.572 78.4
2017 0.472 42.3
2018 0.439 351.5
2019 0.574 310.7
2020 0.753 288.0
2021 0.899 273.6
2022 0.996 262.6
2023 1.044 253.2
2024 1.047 244.3
2025 1.013 235.0
2026 0.947 224.8
2027 0.860 212.7
2028 0.764 197.7
2029 0.677 178.6
2030 0.621 154.9

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
 
grafico orbita






wds19539%2B4425b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19539+4425 MCY 3 Aa,Ab 1997 4 296 0.6 13.41   M6Ve NOD 195354.48+442453.3
19539+4425 MCY 3 Aa,Ab 2005 5 349 1.0 13.50 16.80 M6Ve NOD 195354.48+442453.3
19539+4425 MCY 3 Aa,Ab 2008 7 50 1.0 13.50 16.80 M6Ve NO 195354.48+442453.3
19539+4425 MCY 3 Aa,Ab 2012 19 350 0.6 13.50 16.80 M5.5V+M7V NO 195354.48+442453.3
19539+4425 MCY 3 Aa,Ab 2016 20 236 0.5 13.50 16.80 M5.5V+M7V NO 195354.48+442453.3

If you need more information about this double, apply for a data request form to the WDS.