19055+3352 HU  940

 
 
19h 05m 30.86s +33 52' 21.5" P.A. 188.5 sep 0.45 mag 9.18,9.78 Sp F8 dist. 93.63 pc (305.42 l.y.)
 
 
Coord 2000
19055+3352
Discov num
HU  940
Comp
Coord arcsec 2000
19 05 30.86 +33 52 21.5
Date first
1898
Date last
2016
Obs
80
Pa first
191
Pa last
187
P.A. Now (θ)
188.5°
Sep first
0.5
Sep last
0.4
Sep. Now (ρ)
0.45"
Mag pri
9.18
Mag sec
9.78
delta mag (ΔM)
0.6
Spectral class
F8 (yellow-white)
Pri motion ra
+017
Sec motion ra
+017
Pri motion dec
-031
Sec motion dec
-031
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
186.9
Precise sep
0.44
Cdsa2 id
HU 940
Constellation
Lyra
HIP
93754
Tycho2
2648-01984-1
ADS
12033
Ra deg
19.091905555555556
De deg
33.872638888888886
Distance
93.63
Distance ly
305.42
last precise pa
186.9
last precise sep
0.44
 
 
ORBITAL ELEMENTS
 
 
Period (P)111.6y± 8 Periastron (T)1939.8y± 1 Semi-major axis (a)0.316a± 0.016
Eccentricity (e)0.784± 0.05 Inclination (i)129.2°± 5 Longitude of periastron (ω)18.5°± 6
Node (Ω)31.4°± 1.5 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation1996
label rho theta
2000 0.539 197.6
2001 0.536 197.1
2002 0.533 196.7
2003 0.530 196.2
2004 0.527 195.8
2005 0.523 195.3
2006 0.520 194.9
2007 0.515 194.4
2008 0.511 193.9
2009 0.506 193.4
2010 0.501 192.9
2011 0.496 192.4
2012 0.491 191.9
2013 0.485 191.4
2014 0.479 190.8
2015 0.472 190.3
2016 0.465 189.7
2017 0.458 189.1
2018 0.451 188.5
2019 0.443 187.9
2020 0.435 187.2
2021 0.427 186.5
2022 0.419 185.8
2023 0.410 185.1
2024 0.400 184.3
2025 0.391 183.5
2026 0.381 182.7
2027 0.371 181.8
2028 0.360 180.8
2029 0.349 179.8
2030 0.337 178.7

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

grafico orbita





wds19055%2B3352c.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
19055+3352 HU 940 2005 77 195 0.5 9.18 9.78 F8 NOD 190530.86+335221.5
19055+3352 HU 940 2010 82 194 0.5 9.18 9.78 F8 NOD 190530.86+335221.5
19055+3352 HU 940 2016 80 187 0.4 9.18 9.78 F8 NO 190530.86+335221.5

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