18058+2127 STT 341AB (V772 Her)

 
 
18H 05M 49.72S +21 26' 45.6" P.A. 99.5 SEP 0.1 MAG 7.39,8.82 SP G0V+G5V DIST. 39.45 PC (128.69 L.Y.)
 
 
Coord 2000
18058+2127
Discov num
STT 341
Comp
AB
Coord arcsec 2000
18 05 49.72 +21 26 45.6
Date first
1843
Date last
2016
Obs
268
Pa first
94
Pa last
106
P.A. Now (θ)
99.5°
Sep first
0.3
Sep last
0.4
Sep. Now (ρ)
0.1"
Mag pri
7.39
Mag sec
8.82
delta mag (ΔM)
1.43
Spectral class
G0V+G5V (yellow/yellow)
Pri motion ra
-029
Sec motion ra
-029
Pri motion dec
-040
Sec motion dec
-040
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
18058+2127 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show V772 Her 85723 18058+2127 STT 341 AB 1843 2016 268 100 0.1 7.39 8.82 1.43 Y <===
Show 85723 18058+2127 STT 341 AB,C 1894 2009 18 174 27.2 7.20 10.56 3.36
Show 85723 18058+2127 STT 341 AB,D 1894 2009 16 99 39.5 7.20 10.48 3.28
Show 85723 18058+2127 STT 341 AB,E 1894 2012 18 38 66.7 7.20 10.25 3.05
Show 85723 18058+2127 STT 341 AB,F 1894 2009 9 357 111.6 7.20 11.49 4.29
Show 85723 18058+2127 STT 341 AB,G 1894 2013 19 238 133.1 7.20 7.64 0.44
Show 85723 18058+2127 MET 82 AH 2004 2004 1 63 2.6 5.80 14.30 8.50
Show 85723 18058+2127 MET 82 AI 2004 2004 1 111 6.5 5.80 18.80 13.00
Show 85723 18058+2127 MET 82 AJ 2004 2004 1 33 12.5 5.80 16.40 10.60
Decuple system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
V772 Her
Constellation
Hercules
SAO
85723
HIP
88637
Tycho2
1566-00747-1
HD
165590
ADS
11060
BD
BD+21 3302
Distance
39.45
Distance ly
128.69
last precise pa
105.8
last precise sep
0.37
 
 
ORBITAL ELEMENTS
 
 
Period (P)20.081y Periastron (T)1978.438y Semi-major axis (a)0.253a
Eccentricity (e)0.956 Inclination (i)77° Longitude of periastron (ω)
Node (Ω)270.8° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation1980
label rho theta
2000 0.205 86.9
2001 0.284 88.1
2002 0.344 88.9
2003 0.390 89.5
2004 0.427 89.9
2005 0.454 90.3
2006 0.474 90.7
2007 0.487 91.0
2008 0.494 91.3
2009 0.493 91.6
2010 0.487 91.9
2011 0.473 92.3
2012 0.453 92.6
2013 0.425 93.0
2014 0.389 93.5
2015 0.343 94.0
2016 0.284 94.8
2017 0.208 96.1
2018 0.099 99.5
2019 0.075 82.0
2020 0.197 86.7
2021 0.278 88.1
2022 0.339 88.9
2023 0.387 89.4
2024 0.424 89.9
2025 0.452 90.3
2026 0.473 90.6
2027 0.486 91.0
2028 0.493 91.3
2029 0.494 91.6
2030 0.487 91.9

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