19121+0254 AST 1

 
 
19h 12m 14.68s +02° 53' 10.7" P.A. 5.00 sep 0.2 mag 11.29,13.11 Sp M3.5V dist. 10.22 pc (33.34 l.y.)
 
 
Coord 2000 19121+0254 Discov num AST   1 Comp Coord arcsec 2000 19 12 14.68 +02 53 10.7
Date first 1982 Date last 2021 Obs 71
Pa first 224 Pa last 5.3 P.A. Now (θ) 5.3°
Sep first 0.2 Sep last 0.181 Sep. Now (ρ) 0.181"
Mag pri 11.29 Mag sec 13.11 delta mag (ΔM) 1.82 Spectral class M3.5V (red)
Pri motion ra +179 Sec motion ra
Pri motion dec -052 Sec motion dec
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquila HIP 94349 Gaia DR2 4268226078065248768 GL Gl 748
Distance 10.22 Distance ly 33.34
 
 
ORBITAL ELEMENTS
 
 
Period (P)901.7d (2.47y)± 0.3 Periastron (T)50033.2d (1995.862y)± 0.8 Semi-major axis (a)0.148a± 0.0004
Eccentricity (e)0.45± 0.002 Inclination (i)131.6°± 0.3 Longitude of periastron (ω)27.3°± 0.4
Node (Ω)359.6°± 0.2 Notesn ReferenceAST2016
Equinox2000 Last observation Grade1(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 135.0 0.153
2001-01-01 255.1 0.070
2002-01-01 162.3 0.203
2003-01-01 49.9 0.088
2004-01-01 184.0 0.188
2005-01-01 129.6 0.143
2006-01-01 235.0 0.085
2007-01-01 159.3 0.200
2008-01-01 34.6 0.088
2009-01-01 180.8 0.194
2010-01-01 123.4 0.133
2011-01-01 221.3 0.102
2012-01-01 156.3 0.195
2013-01-01 19.4 0.088
2014-01-01 177.8 0.200
2015-01-01 116.1 0.123
2016-01-01 211.6 0.119
2017-01-01 153.1 0.190
2018-01-01 3.8 0.086
2019-01-01 174.9 0.203
2020-01-01 107.6 0.113
2021-01-01 204.3 0.135
2022-01-01 149.7 0.183
2023-01-01 346.5 0.079
2024-01-01 172.0 0.206
2025-01-01 97.5 0.104
2026-01-01 198.5 0.150
2027-01-01 146.0 0.175
2028-01-01 325.1 0.070
2029-01-01 169.3 0.207
2030-01-01 85.7 0.097


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



 
 


wds19121%2B0254c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic