01345+7804 HDS 211Aa,Ab

 
 
01H 34M 30.53S +78 03' 46.6" P.A. 124.4 SEP 0.12 MAG 11.02,12.76 SP M0 DIST. 37.71 PC (123.01 L.Y.)
 
 
Coord 2000
01345+7804
Discov num
HDS 211
Comp
Aa,Ab
Coord arcsec 2000
01 34 30.53 +78 03 46.6
Date first
1991
Date last
2011
Obs
13
Pa first
188
Pa last
211
P.A. Now (θ)
124.4°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.12"
Mag pri
11.02
Mag sec
12.76
delta mag (ΔM)
1.74
Spectral class
M0 (red)
Pri motion ra
-066
Sec motion ra
Pri motion dec
+104
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
01345+7804 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 01345+7804 HDS 211 Aa,Ab 1991 2011 13 124 0.1 11.02 12.76 1.74 Y <===
Show 01345+7804 TOK 227 AB 1980 2003 3 350 62.0 10.64 13.28 2.64
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cepheus
HIP
7338
Tycho2
4498-01104-3
Distance
37.71
Distance ly
123.01
last precise pa
211
last precise sep
0.223
 
 
ORBITAL ELEMENTS
 
 
Period (P)22.74y Periastron (T)1996.99y Semi-major axis (a)0.207a
Eccentricity (e)0.462 Inclination (i)127.7° Longitude of periastron (ω)28.5°
Node (Ω)68.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2006
label rho theta
2000 0.142 285.1
2001 0.186 271.2
2002 0.222 262.3
2003 0.249 255.7
2004 0.270 250.3
2005 0.282 245.5
2006 0.289 241.0
2007 0.289 236.6
2008 0.283 232.1
2009 0.273 227.4
2010 0.258 222.1
2011 0.238 216.2
2012 0.216 209.0
2013 0.190 200.1
2014 0.164 188.3
2015 0.140 172.2
2016 0.123 150.5
2017 0.117 124.4
2018 0.120 97.9
2019 0.117 72.2
2020 0.096 40.4
2021 0.080 348.4
2022 0.108 302.8
2023 0.154 280.7
2024 0.196 268.6
2025 0.230 260.5
2026 0.255 254.2
2027 0.274 249.0
2028 0.285 244.3
2029 0.289 239.8
2030 0.288 235.4

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic