19021+5216 HU 757 BC

 
 
19h 02m 06.53s +52° 15' 42.3" P.A. 168.00 sep 0.2 mag 10.30,10.40 Sp G8III: dist. 214.13 pc (698.49 l.y.)
 
 
Coord 2000 19021+5216 Discov num HU  757 Comp BC Coord arcsec 2000 19 02 06.53 +52 15 42.3
Date first 1904 Date last 2010 Obs 15
Pa first 93 Pa last 167.9 P.A. Now (θ) 167.9°
Sep first 0.2 Sep last 0.18 Sep. Now (ρ) 0.18"
Mag pri 10.30 Mag sec 10.40 delta mag (ΔM) 0.1 Spectral class G8III: (yellow)
Pri motion ra -008 Sec motion ra -008
Pri motion dec -033 Sec motion dec -033
Notes O (Orbital solution)
This double is physical.
 
 
19021+5216 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 177483 31337 19 02 07 +52 15 40 STF 2450 A,BC 2021 28 300 5.2 6.50 9.51 3.01
Show 31337 19 02 07 +52 15 42 HU 757 BC 2010 15 168 0.2 10.30 10.40 0.10 Y <===
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco SAO 31337 HIP 93466 Tycho2 3553-01598-1
Gaia DR2 2134442516679430272 HD 177483 HR 7229 ADS 11979
BD BD+52 2326 Distance 214.13 Distance ly 698.49
 
 
ORBITAL ELEMENTS
 
 
Period (P)115.9y Periastron (T)1991.06y Semi-major axis (a)0.234a
Eccentricity (e)0.284 Inclination (i)115° Longitude of periastron (ω)217.4°
Node (Ω)84.6° Notes ReferenceSca2001c
Equinox2000 Last observation1998 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 182.7 0.077
2001 171.2 0.078
2002 160.3 0.081
2003 150.5 0.087
2004 142.0 0.094
2005 134.8 0.103
2006 128.8 0.112
2007 123.8 0.122
2008 119.5 0.132
2009 115.8 0.142
2010 112.6 0.152
2011 109.8 0.162
2012 107.4 0.172
2013 105.2 0.182
2014 103.2 0.191
2015 101.4 0.200
2016 99.7 0.208
2017 98.2 0.216
2018 96.8 0.223
2019 95.4 0.231
2020 94.2 0.237
2021 93.0 0.243
2022 91.8 0.249
2023 90.7 0.254
2024 89.7 0.259
2025 88.7 0.264
2026 87.7 0.268
2027 86.8 0.271
2028 85.8 0.274
2029 84.9 0.277
2030 84.0 0.279


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


 
  


wds19021%2B5216a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic