01559+0151 STF 186

 
 
01h 55m 53.80s +01 50' 59.6" P.A. 73.6 sep 0.66 mag 6.79,6.84 Sp F9V dist. 39.89 pc (130.12 l.y.)
 
 
Coord 2000
01559+0151
Discov num
STF 186
Comp
Coord arcsec 2000
01 55 53.80 +01 50 59.6
Date first
1825
Date last
2018
Obs
438
Pa first
240
Pa last
74
P.A. Now (θ)
73.6°
Sep first
1.4
Sep last
0.7
Sep. Now (ρ)
0.66"
Mag pri
6.79
Mag sec
6.84
delta mag (ΔM)
0.05
Spectral class
F9V (yellow-white)
Pri motion ra
+164
Sec motion ra
+164
Pri motion dec
+189
Sec motion dec
+189
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
73.6
Precise sep
0.666
Constellation
Cetus
SAO
110235
HIP
8998
Tycho2
0030-01344-1
Gaia DR2
38379352192
HD
11803
HR
560
ADS
1538
BD
BD+01 347
Distance
39.89
Distance ly
130.12
last precise pa
73.6
last precise sep
0.666
 
 
ORBITAL ELEMENTS
 
 
Period (P)166.4y Periastron (T)1893.05y Semi-major axis (a)1.023a
Eccentricity (e)0.721 Inclination (i)73.8° Longitude of periastron (ω)42.2°
Node (Ω)220.1° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2017
label rho theta
2000 1.030 61.6
2001 1.013 62.0
2002 0.996 62.5
2003 0.978 62.9
2004 0.960 63.4
2005 0.942 63.9
2006 0.923 64.4
2007 0.904 64.9
2008 0.885 65.4
2009 0.866 66.0
2010 0.847 66.6
2011 0.827 67.2
2012 0.807 67.9
2013 0.786 68.6
2014 0.766 69.3
2015 0.745 70.1
2016 0.724 70.9
2017 0.703 71.7
2018 0.682 72.7
2019 0.660 73.6
2020 0.639 74.7
2021 0.617 75.8
2022 0.595 77.0
2023 0.573 78.3
2024 0.551 79.6
2025 0.529 81.1
2026 0.507 82.8
2027 0.485 84.6
2028 0.463 86.5
2029 0.442 88.6
2030 0.420 91.0

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






wds01559%2B0151b.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
01559+0151 STF 186 2007 417 246 0.9 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2008 421 247 0.9 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2009 426 246 0.9 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2012 433 248 0.7 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2014 428 70 0.8 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2015 429 71 0.7 6.79 6.84 F9V NOD 015553.80+015059.6
01559+0151 STF 186 2017 433 253 0.7 6.79 6.84 F9V NO 015553.80+015059.6
01559+0151 STF 186 2018 439 256 0.6 6.79 6.84 F9V NO 015553.80+015059.6

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