19072+2053 LDS1017

 
 
19h 07m 13.20s +20 52' 37.3" P.A. 290 sep 114.2 mag 10.95,10.99 Sp M2V+M2V dist. 8.51 pc (27.76 l.y.)
 
 
Coord 2000
19072+2053
Discov num
LDS1017
Comp
Coord arcsec 2000
19 07 13.20 +20 52 37.3
Date first
1897
Date last
2016
Obs
24
Pa first
292
Pa last
290
P.A. Now (θ)
290°
Sep first
115.4
Sep last
114.2
Sep. Now (ρ)
114.2"
Mag pri
10.95
Mag sec
10.99
delta mag (ΔM)
0.04
Spectral class
M2V+M2V (red/red)
Pri motion ra
-486
Sec motion ra
-485
Pri motion dec
-332
Sec motion dec
-347
Notes
N O (See Notes, Orbital solution)
rPM=0.025 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
290.2
Precise sep
114.176
Constellation
Sagitta
HIP
93873
Tycho2
1598-00578-1
HD
349726
GL
Gl 745A
Distance
8.51
Distance ly
27.76
last precise pa
290.2
last precise sep
114.176
 
 
ORBITAL ELEMENTS
 
 
Period (P)360c Periastron (T)8254y Semi-major axis (a)117.9a
Eccentricity (e)0.64 Inclination (i)153° Longitude of periastron (ω)231°
Node (Ω)206° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2007
label rho theta
2000 115.415 110.6
2001 115.405 110.6
2002 115.395 110.6
2003 115.384 110.6
2004 115.374 110.6
2005 115.364 110.6
2006 115.353 110.6
2007 115.343 110.6
2008 115.333 110.6
2009 115.322 110.6
2010 115.312 110.6
2011 115.302 110.6
2012 115.291 110.6
2013 115.281 110.6
2014 115.271 110.5
2015 115.261 110.5
2016 115.250 110.5
2017 115.240 110.5
2018 115.230 110.5
2019 115.219 110.5
2020 115.209 110.5
2021 115.199 110.5
2022 115.188 110.5
2023 115.178 110.5
2024 115.168 110.5
2025 115.157 110.5
2026 115.147 110.5
2027 115.137 110.5
2028 115.126 110.4
2029 115.116 110.4
2030 115.106 110.4

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

grafico orbita





wds19072%2B2053b.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
19072+2053 LDS1017 2000 14 290 114.1 10.95 10.99 M2+M4 N DV 190713.20+205237.3
19072+2053 LDS1017 2001 15 290 114.2 10.95 10.99 M2 M4 NVD 190713.20+205237.3
19072+2053 LDS1017 2012 16 290 114.5 10.95 10.99 M2V+M2V NVD 190713.20+205237.3
19072+2053 LDS1017 2015 22 290 113.8 10.95 10.99 M2V+M2V NO 190713.20+205237.3
19072+2053 LDS1017 2016 24 290 114.2 10.95 10.99 M2V+M2V NO 190713.20+205237.3

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