19143+1904 STF2484

 
 
19h 14m 15.66s +19 03' 50.3" P.A. 240.90 sep 2.1 mag 7.93,9.51 Sp F8 dist. 67.2 pc (219.21 l.y.)
 
 
Coord 2000
19143+1904
Discov num
STF2484
Comp
Coord arcsec 2000
19 14 15.66 +19 03 50.3
Date first
1831
Date last
2017
Obs
123
Pa first
218
Pa last
242
P.A. Now (θ)
240.9°
Sep first
2.5
Sep last
2.1
Sep. Now (ρ)
2.06"
Mag pri
7.93
Mag sec
9.51
delta mag (ΔM)
1.58
Spectral class
F8 (yellow-white)
Pri motion ra
+032
Sec motion ra
+032
Pri motion dec
-027
Sec motion dec
-027
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
241.7
Precise sep
2.109
Constellation
Sagitta
SAO
104635
HIP
94520
Tycho2
1607-00899-1
Gaia DR2
74788081152
HD
180054
ADS
12201
BD
BD+18 3998
Distance
67.2
Distance ly
219.21
last precise pa
241.7
last precise sep
2.109
 
 
ORBITAL ELEMENTS
 
 
Period (P)1500.4372y± 606.2944 Periastron (T)2113.8041y± 111.9268 Semi-major axis (a)4.31198a± 1.87027
Eccentricity (e)0.88995± 0.25371 Inclination (i)73.076°± 7.289 Longitude of periastron (ω)272.338°± 14.293
Node (Ω)79.874°± 33.941 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 2.187 238.1
2001 2.182 238.2
2002 2.176 238.4
2003 2.171 238.5
2004 2.165 238.6
2005 2.160 238.7
2006 2.154 238.9
2007 2.148 239.0
2008 2.142 239.1
2009 2.136 239.3
2010 2.130 239.4
2011 2.124 239.5
2012 2.118 239.6
2013 2.112 239.8
2014 2.106 239.9
2015 2.099 240.0
2016 2.093 240.2
2017 2.086 240.3
2018 2.079 240.5
2019 2.073 240.6
2020 2.066 240.7
2021 2.059 240.9
2022 2.052 241.0
2023 2.045 241.1
2024 2.037 241.3
2025 2.030 241.4
2026 2.023 241.6
2027 2.015 241.7
2028 2.008 241.9
2029 2.000 242.0
2030 1.992 242.2

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






wds19143%2B1904b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19143+1904 STF2484 2007 116 239 2.3 7.93 9.51 F8 NOD 191415.66+190350.3
19143+1904 STF2484 2008 118 239 2.3 7.93 9.51 F8 NOD 191415.66+190350.3
19143+1904 STF2484 2010 121 240 2.1 7.93 9.51 F8 NOD 191415.66+190350.3
19143+1904 STF2484 2011 124 239 2.0 7.93 9.51 F8 NOD 191415.66+190350.3
19143+1904 STF2484 2015 118 241 2.1 7.93 9.51 F8 NO 191415.66+190350.3
19143+1904 STF2484 2017 121 242 2.1 7.93 9.51 F8 NO 191415.66+190350.3

If you need more information about this double, apply for a data request form to the WDS.