19255+0307 BNU 6 Aa,Ab

 
 
19h 25m 29.90s +03° 06' 53.2" P.A. 130.00 sep 0.1 mag 3.40, Sp F3IV dist. 15.53 pc (50.66 l.y.)
 
 
Coord 2000 19255+0307 Discov num BNU   6 Comp Aa,Ab Coord arcsec 2000 19 25 29.90 +03 06 53.2
Date first 1979 Date last 1979 Obs 1
Pa first 130 Pa last 130 P.A. Now (θ) 130°
Sep first 0.1 Sep last 0.132 Sep. Now (ρ) 0.132"
Mag pri 3.40 Mag sec delta mag (ΔM) Spectral class F3IV (yellow-white)
Pri motion ra +255 Sec motion ra
Pri motion dec +083 Sec motion dec
Notes N X (See Notes, Dubious double)
Nature of this double is uncertain.
 
 
19255+0307 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 124603 19 25 30 +03 06 53 BNU 6 Aa,Ab 1979 1 130 0.1 3.40 Y <===
Show Del Aql 124603 19 25 30 +03 06 53 BUP 190 AB 2016 10 266 137.0 3.36 12.75 9.39
Show 124603 19 25 30 +03 06 53 VLM 1 AC 2006 1 338 34.3 3.36 13.30 9.94
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name NSV12004 Aql Constellation Aquila SAO 124603 HIP 95501
Tycho2 0469-06227-1 Gaia DR2 4289041379334773888 HD 182640 HR 7377
GC 26816 GL Gl 760 BD BD+02 3879 Bayer Delta Aquilae
Bayer name Del Aql Flamsteed 30 Aquilae Flamsteed name 30 Aql FK5 730
Distance 15.53 Distance ly 50.66 Bayer greek δ Aql
 
 
ORBITAL ELEMENTS
 
 
Period (P)1251.3d (3.43y) Periastron (T)34955.5d (1954.581y) Semi-major axis (a)55.69m± 0.79
Eccentricity (e)0.36 Inclination (i)150° Longitude of periastron (ω)191°
Node (Ω)337° Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 11.9 0.060
2001-01-01 319.5 0.074
2002-01-01 244.4 0.044
2003-01-01 56.9 0.042
2004-01-01 339.4 0.075
2005-01-01 286.6 0.060
2006-01-01 141.2 0.035
2007-01-01 1.9 0.065
2008-01-01 312.2 0.072
2009-01-01 222.5 0.040
2010-01-01 37.2 0.048
2011-01-01 332.5 0.075
2012-01-01 274.7 0.055
2013-01-01 109.4 0.035
2014-01-01 353.4 0.070
2015-01-01 304.3 0.069
2016-01-01 196.6 0.038
2017-01-01 22.3 0.055
2018-01-01 325.6 0.075
2019-01-01 260.2 0.049
2020-01-01 79.1 0.037
2021-01-01 345.7 0.073
2022-01-01 295.5 0.064
2023-01-01 167.9 0.036
2024-01-01 10.5 0.061
2025-01-01 318.6 0.074
2026-01-01 241.9 0.044
2027-01-01 54.1 0.042
2028-01-01 338.5 0.075
2029-01-01 285.3 0.059
2030-01-01 137.3 0.035


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



 
 


wds19255%2B0307s.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic