15432+1340 BU 619 AB (HD 140438)

 
 
15h 43m 10.53s +13° 40' 03.7" P.A. 357.00 sep 0.7 mag 6.95,7.94 Sp G4IV dist. 173.31 pc (565.34 l.y.)
 
 
Coord 2000 15432+1340 Discov num BU  619 Comp AB Coord arcsec 2000 15 43 10.53 +13 40 03.7
Date first 1878 Date last 2019 Obs 163
Pa first 357 Pa last 357.1 P.A. Now (θ) 357.1°
Sep first 0.4 Sep last 0.651 Sep. Now (ρ) 0.651"
Mag pri 6.95 Mag sec 7.94 delta mag (ΔM) 0.99 Spectral class G4IV (yellow)
Pri motion ra -016 Sec motion ra -016
Pri motion dec -030 Sec motion dec -030
Notes N (See Notes)
Nature of this double is uncertain.
 
 
15432+1340 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 140438 101699 15 43 11 +13 40 04 BU 619 AB 2019 163 357 0.7 6.95 7.94 0.99 Y <===
Show 15 43 11 +13 40 04 BU 619 BC 2019 3 47 0.3 8.30 9.50 1.20
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 140438 Constellation Serpens SAO 101699 HIP 76985
Tycho2 0942-00653-1 HD 140438 HR 5850 GC 21132
ADS 9758 BD BD+14 2922 Distance 173.31 Distance ly 565.34
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier15432+1340 BU 619 A
coord_arcsec_2000154310.53+134003.7
Period (P)75.2y Periastron (T)1993.46y Semi-major axis (a)0.132a
Eccentricity (e)0.938 Inclination (i)76.5° Longitude of periastron (ω)258.3°
Node (Ω)29.7° Notes ReferenceZir2014b
Equinox2000 Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 48.9 0.071
2001 50.2 0.075
2002 51.3 0.077
2003 52.4 0.080
2004 53.5 0.082
2005 54.5 0.083
2006 55.4 0.085
2007 56.3 0.086
2008 57.2 0.087
2009 58.1 0.088
2010 59.0 0.089
2011 59.8 0.089
2012 60.7 0.089
2013 61.5 0.090
2014 62.4 0.090
2015 63.2 0.090
2016 64.0 0.090
2017 64.9 0.089
2018 65.7 0.089
2019 66.6 0.089
2020 67.5 0.088
2021 68.3 0.088
2022 69.2 0.087
2023 70.1 0.086
2024 71.0 0.085
2025 72.0 0.085
2026 72.9 0.084
2027 73.9 0.083
2028 74.9 0.082
2029 75.9 0.081
2030 77.0 0.079


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


 
  


wds15432%2B1340f.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic