15559-0210 STF1985

 
 
15h 55m 54.63s -02 09' 51.3" P.A. 355.2 sep 6.29 mag 7.03,8.65 Sp F8V dist. 36.9 pc (120.37 l.y.)
 
 
Coord 2000
15559-0210
Discov num
STF1985
Comp
Coord arcsec 2000
15 55 54.63 -02 09 51.3
Date first
1823
Date last
2015
Obs
181
Pa first
325
Pa last
354
P.A. Now (θ)
355.2°
Sep first
6.8
Sep last
6.1
Sep. Now (ρ)
6.29"
Mag pri
7.03
Mag sec
8.65
delta mag (ΔM)
1.62
Spectral class
F8V (yellow-white)
Pri motion ra
-089
Sec motion ra
-089
Pri motion dec
-061
Sec motion dec
-061
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
353.7
Precise sep
6.08
Constellation
Serpens
HIP
78024
Tycho2
5023-00606-1
HD
142661
ADS
9842
BD
BD-01 3118
Distance
36.9
Distance ly
120.37
last precise pa
353.7
last precise sep
6.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)2331.2y Periastron (T)1533.8y Semi-major axis (a)6.953a
Eccentricity (e)0.38 Inclination (i)31.68° Longitude of periastron (ω)132.56°
Node (Ω)107.76° Note Grade5(1=Definitive, 9=Indet.)
Equinox1900 Last observation
label rho theta
2000 6.219 352.7
2001 6.223 352.8
2002 6.227 353.0
2003 6.231 353.1
2004 6.236 353.3
2005 6.240 353.4
2006 6.244 353.6
2007 6.248 353.7
2008 6.253 353.9
2009 6.257 354.0
2010 6.261 354.2
2011 6.265 354.3
2012 6.270 354.5
2013 6.274 354.6
2014 6.278 354.8
2015 6.282 354.9
2016 6.286 355.1
2017 6.291 355.2
2018 6.295 355.4
2019 6.299 355.5
2020 6.303 355.7
2021 6.308 355.8
2022 6.312 356.0
2023 6.316 356.1
2024 6.321 356.3
2025 6.325 356.4
2026 6.329 356.6
2027 6.333 356.7
2028 6.338 356.9
2029 6.342 357.0
2030 6.346 357.2

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

grafico orbita





wds15559-0210a.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
15559-0210 STF1985 2007 168 351 6.2 7.03 8.65 F8V NOD 155554.63-020951.3
15559-0210 STF1985 2008 172 354 6.1 7.03 8.65 F8V NOD 155554.63-020951.3
15559-0210 STF1985 2010 174 353 6.0 7.03 8.65 F8V NOD 155554.63-020951.3
15559-0210 STF1985 2012 175 354 6.0 7.03 8.65 F8V NOD 155554.63-020951.3
15559-0210 STF1985 2013 177 353 5.9 7.03 8.65 F8V NOD 155554.63-020951.3
15559-0210 STF1985 2015 179 354 6.1 7.03 8.65 F8V NO 155554.63-020951.3

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