16422+4112 STF2091

 
 
16h 42m 09.74s +41 11' 42.9" P.A. 332 sep 0.33 mag 8.44,9.29 Sp F0 dist. 155.04 pc (505.74 l.y.)
 
 
Coord 2000
16422+4112
Discov num
STF2091
Comp
Coord arcsec 2000
16 42 09.74 +41 11 42.9
Date first
1830
Date last
2010
Obs
109
Pa first
302
Pa last
324
P.A. Now (θ)
332°
Sep first
1.3
Sep last
0.4
Sep. Now (ρ)
0.33"
Mag pri
8.44
Mag sec
9.29
delta mag (ΔM)
0.85
Spectral class
F0 (yellow-white)
Pri motion ra
-009
Sec motion ra
-009
Pri motion dec
-003
Sec motion dec
-003
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
324.4
Precise sep
0.363
Constellation
Hercules
SAO
46234
HIP
81774
Tycho2
3074-00752-1
HD
150903
ADS
10169
BD
BD+41 2742
Distance
155.04
Distance ly
505.74
last precise pa
324.4
last precise sep
0.363
 
 
ORBITAL ELEMENTS
 
 
Period (P)888y Periastron (T)2059y Semi-major axis (a)0.877a
Eccentricity (e)0.72 Inclination (i)64.7° Longitude of periastron (ω)321.9°
Node (Ω)126.5° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.486 321.7
2001 0.478 322.1
2002 0.470 322.5
2003 0.462 322.9
2004 0.453 323.4
2005 0.445 323.8
2006 0.436 324.3
2007 0.427 324.8
2008 0.419 325.3
2009 0.410 325.8
2010 0.401 326.4
2011 0.392 327.0
2012 0.383 327.6
2013 0.374 328.3
2014 0.365 328.9
2015 0.355 329.6
2016 0.346 330.4
2017 0.337 331.2
2018 0.327 332.0
2019 0.318 332.9
2020 0.308 333.9
2021 0.299 334.9
2022 0.289 335.9
2023 0.280 337.1
2024 0.270 338.3
2025 0.260 339.6
2026 0.251 341.0
2027 0.241 342.6
2028 0.232 344.2
2029 0.222 346.0
2030 0.213 348.0

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

grafico orbita





wds16422%2B4112a.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
16422+4112 STF2091 2000 101 325 0.5 8.44 9.29 F0 D 164209.74+411142.9
16422+4112 STF2091 2010 102 328 0.4 8.44 9.29 F0 D 164209.74+411142.9

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