00093+7943 STF   2

 
 
00h 09m 20.18s +79 42' 52.4" P.A. 14.8 sep 0.92 mag 6.68,6.89 Sp A4IV dist. 105.49 pc (344.11 l.y.)
 
 
Coord 2000
00093+7943
Discov num
STF   2
Comp
Coord arcsec 2000
00 09 20.18 +79 42 52.4
Date first
1828
Date last
2015
Obs
210
Pa first
343
Pa last
17
P.A. Now (θ)
14.8°
Sep first
0.8
Sep last
0.9
Sep. Now (ρ)
0.92"
Mag pri
6.68
Mag sec
6.89
delta mag (ΔM)
0.21
Spectral class
A4IV (white)
Pri motion ra
+106
Sec motion ra
+106
Pri motion dec
-033
Sec motion dec
-033
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
17.2
Precise sep
0.86
Cdsa2 id
STF 2
Constellation
Cepheus
SAO
4048
HIP
760
Tycho2
4500-01334-1
HD
431
HR
20
ADS
102
BD
BD+78 1
Ra deg
0.15560555555555555
De deg
79.71455555555556
Distance
105.49
Distance ly
344.11
last precise pa
17.2
last precise sep
0.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)540y Periastron (T)1887.5y Semi-major axis (a)0.995a
Eccentricity (e)0.715 Inclination (i)110.1° Longitude of periastron (ω)333.7°
Node (Ω)171.2° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.788 18.7
2001 0.796 18.5
2002 0.804 18.2
2003 0.812 18.0
2004 0.819 17.8
2005 0.827 17.5
2006 0.835 17.3
2007 0.842 17.1
2008 0.850 16.9
2009 0.857 16.6
2010 0.865 16.4
2011 0.872 16.2
2012 0.880 16.0
2013 0.887 15.8
2014 0.895 15.6
2015 0.902 15.4
2016 0.909 15.2
2017 0.916 15.0
2018 0.924 14.8
2019 0.931 14.7
2020 0.938 14.5
2021 0.945 14.3
2022 0.952 14.1
2023 0.959 13.9
2024 0.966 13.8
2025 0.973 13.6
2026 0.980 13.4
2027 0.987 13.3
2028 0.993 13.1
2029 1.000 13.0
2030 1.007 12.8

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

grafico orbita





wds00093%2B7943a.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
00093+7943 STF 2 2005 214 18 0.8 6.68 6.89 A4IV NOD 000920.18+794252.4
00093+7943 STF 2 2007 215 18 0.8 6.68 6.89 A4IV NOD 000920.18+794252.4
00093+7943 STF 2 2010 216 17 0.8 6.68 6.89 A4IV NOD 000920.18+794252.4
00093+7943 STF 2 2012 208 17 0.9 6.68 6.89 A4IV NOD 000920.18+794252.4
00093+7943 STF 2 2015 210 17 0.9 6.68 6.89 A4IV NO 000920.18+794252.4

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