19073+3606 STA 3 (Iot Lyr)

 
 
19h 07m 18.13s +36° 06' 00.6" P.A. 223.00 sep 0.1 mag 5.28,6.40 Sp B6IV dist. 274.73 pc (896.17 l.y.)
 
 
Coord 2000 19073+3606 Discov num STA   3 Comp Coord arcsec 2000 19 07 18.13 +36 06 00.6
Date first 1981 Date last 2014 Obs 34
Pa first 67 Pa last 223.4 P.A. Now (θ) 223.4°
Sep first 0.1 Sep last 0.078 Sep. Now (ρ) 0.078"
Mag pri 5.28 Mag sec 6.40 delta mag (ΔM) 1.12 Spectral class B6IV (blue-white)
Pri motion ra +001 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Iot Lyr Constellation Lyra SAO 67834 HIP 93903
Tycho2 2652-01709-1 Gaia DR2 2098699038630265728 HD 178475 HR 7262
GC 26338 BD BD+35 3485 Bayer Iota Lyrae Bayer name Iot Lyr
Flamsteed 18 Lyrae Flamsteed name 18 Lyr FK5 719 Distance 274.73
Distance ly 896.17 Bayer greek ι Lyr
 
 
ORBITAL ELEMENTS
 
 
Period (P)216.93y Periastron (T)1997.28y Semi-major axis (a)0.172a
Eccentricity (e)0.637 Inclination (i)145.5° Longitude of periastron (ω)201.2°
Node (Ω)171.4° Notesn ReferenceHrt2014b
Equinox2000 Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 310.0 0.059
2001 301.1 0.059
2002 292.3 0.060
2003 283.8 0.061
2004 275.7 0.063
2005 268.1 0.066
2006 261.2 0.069
2007 254.9 0.072
2008 249.1 0.076
2009 244.0 0.080
2010 239.3 0.084
2011 235.0 0.088
2012 231.2 0.092
2013 227.7 0.097
2014 224.5 0.101
2015 221.6 0.106
2016 219.0 0.110
2017 216.5 0.115
2018 214.2 0.119
2019 212.1 0.123
2020 210.1 0.128
2021 208.3 0.132
2022 206.5 0.136
2023 204.9 0.140
2024 203.4 0.144
2025 201.9 0.148
2026 200.5 0.152
2027 199.2 0.156
2028 198.0 0.160
2029 196.8 0.163
2030 195.6 0.167


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



 
 


wds19073%2B3606a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic