19121+4951 STF2486AB

 
 
19h 12m 05.03s +49 51' 20.7" P.A. 203.8 sep 7.19 mag 6.54,6.67 Sp G3V+G3V dist. 24.45 pc (79.76 l.y.)
 
 
Coord 2000
19121+4951
Discov num
STF2486
Comp
AB
Coord arcsec 2000
19 12 05.03 +49 51 20.7
Date first
1819
Date last
2017
Obs
311
Pa first
223
Pa last
205
P.A. Now (θ)
203.8°
Sep first
9.0
Sep last
7.1
Sep. Now (ρ)
7.19"
Mag pri
6.54
Mag sec
6.67
delta mag (ΔM)
0.13
Spectral class
G3V+G3V (yellow/yellow)
Pri motion ra
-210
Sec motion ra
-184
Pri motion dec
+622
Sec motion dec
+629
Notes
N O (See Notes, Orbital solution)
rPM=0.041 (< 0.3, Physical double)
This double is physical.
 
 
19121+4951 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 48192 19121+4951 STF2486 AB 1819 2017 311 204 7.2 6.54 6.67 0.13 Y <===
Show 19121+4951 STF2486 AC 1910 2006 6 96 27.2 6.54 13.20 6.66
Show 48193 19121+4951 STF2486 AD 1881 2012 9 104 196.0 6.54 11.12 4.58
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
204.6
Precise sep
7.135
Constellation
Cygnus
SAO
48192
HIP
94336
Tycho2
3550-01848-1
HD
179957
HR
7293
ADS
12169
GL
Wo 9648B
Distance
24.45
Distance ly
79.76
last precise pa
204.6
last precise sep
7.135
 
 
ORBITAL ELEMENTS
 
 
Period (P)3100y Periastron (T)2520y Semi-major axis (a)12.75a
Eccentricity (e)0.5 Inclination (i)119.06° Longitude of periastron (ω)186.09°
Node (Ω)255.22° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 7.514 206.5
2001 7.495 206.3
2002 7.477 206.2
2003 7.459 206.0
2004 7.441 205.9
2005 7.423 205.8
2006 7.405 205.6
2007 7.387 205.5
2008 7.368 205.3
2009 7.350 205.2
2010 7.332 205.0
2011 7.314 204.9
2012 7.296 204.7
2013 7.278 204.6
2014 7.260 204.4
2015 7.242 204.3
2016 7.224 204.1
2017 7.206 204.0
2018 7.188 203.8
2019 7.171 203.7
2020 7.153 203.5
2021 7.135 203.4
2022 7.117 203.2
2023 7.099 203.0
2024 7.081 202.9
2025 7.064 202.7
2026 7.046 202.6
2027 7.028 202.4
2028 7.010 202.2
2029 6.993 202.1
2030 6.975 201.9

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

grafico orbita





wds19121%2B4951b.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
19121+4951 STF2486 AB 2007 259 205 7.3 6.54 6.67 G3V G3V NODV 191205.03+495120.7
19121+4951 STF2486 AB 2008 264 205 7.3 6.54 6.67 G3V G3V NODV 191205.03+495120.7
19121+4951 STF2486 AB 2009 265 205 7.3 6.54 6.67 G3V G3V NODV 191205.03+495120.7
19121+4951 STF2486 AB 2010 272 205 7.1 6.54 6.67 G3V G3V NOD 191205.03+495120.7
19121+4951 STF2486 AB 2011 273 206 7.4 6.54 6.67 G3V G3V NOD 191205.03+495120.7
19121+4951 STF2486 AB 2012 274 204 7.2 6.54 6.67 G3V G3V NOD 191205.03+495120.7
19121+4951 STF2486 AB 2013 284 205 7.2 6.54 6.67 G3V G3V NOD 191205.03+495120.7
19121+4951 STF2486 AB 2014 285 204 7.2 6.54 6.67 G3V G3V NOD 191205.03+495120.7
19121+4951 STF2486 AB 2015 286 204 7.2 6.54 6.67 G3V+G3V NO 191205.03+495120.7
19121+4951 STF2486 AB 2016 310 204 7.2 6.54 6.67 G3V+G3V NO 191205.03+495120.7
19121+4951 STF2486 AB 2017 311 205 7.1 6.54 6.67 G3V+G3V NO 191205.03+495120.7

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