19449-2338 MTG   4

 
 
19h 44m 53.80s -23 37' 59.3" P.A. 341 sep 0.6 mag 14.10,15.00
 
 
Coord 2000
19449-2338
Discov num
MTG   4
Comp
Coord arcsec 2000
19 44 53.80 -23 37 59.3
Date first
2004
Date last
2015
Obs
5
Pa first
355
Pa last
341
P.A. Now (θ)
341°
Sep first
0.8
Sep last
0.6
Sep. Now (ρ)
0.6"
Mag pri
14.10
Mag sec
15.00
delta mag (ΔM)
0.9
Spectral class
Pri motion ra
+320
Sec motion ra
Pri motion dec
-167
Sec motion dec
Notes
O K (Orbital solution, K-band or other infrared magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
340.9
Precise sep
0.631
Constellation
Sagittarius
last precise pa
340.9
last precise sep
0.631
 
 
ORBITAL ELEMENTS
 
 
Period (P)31.2y Periastron (T)2021.7y Semi-major axis (a)0.45a
Eccentricity (e)0.92 Inclination (i)140° Longitude of periastron (ω)332°
Node (Ω)150° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 0.719 359.1
2001 0.748 357.8
2002 0.772 356.6
2003 0.792 355.5
2004 0.807 354.4
2005 0.817 353.3
2006 0.823 352.3
2007 0.825 351.2
2008 0.822 350.2
2009 0.814 349.2
2010 0.802 348.1
2011 0.785 347.0
2012 0.763 345.8
2013 0.735 344.5
2014 0.701 343.2
2015 0.660 341.7
2016 0.612 339.9
2017 0.554 337.9
2018 0.486 335.3
2019 0.403 331.7
2020 0.299 326.0
2021 0.157 311.7
2022 0.069 78.5
2023 0.203 29.9
2024 0.308 18.9
2025 0.395 13.2
2026 0.469 9.4
2027 0.532 6.6
2028 0.587 4.4
2029 0.635 2.5
2030 0.677 0.9

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

grafico orbita





wds19449-2338a.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
19449-2338 MTG 4 2005 2 353 0.8 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2010 3 348 0.8 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2014 4 342 0.7 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2015 5 341 0.6 9.00 9.10 K 194453.80-233759.3

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