02171+3413 MKT   5Aa,Ab

 
 
02H 17M 03.23S +34 13' 27.2" P.A. 26 MAG 4.85, SP F9V DIST. 10.78 PC (35.16 L.Y.)
 
 
Coord 2000
02171+3413
Discov num
MKT   5
Comp
Aa,Ab
Coord arcsec 2000
02 17 03.23 +34 13 27.2
Date first
1990
Date last
1992
Obs
21
Pa first
296
Pa last
26
P.A. Now (θ)
26°
Sep first
0.0
Sep last
0.0
Sep. Now (ρ)
0"
Mag pri
4.85
Mag sec
delta mag (ΔM)
Spectral class
F9V (yellow-white)
Pri motion ra
+115
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
02171+3413 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 55420 02171+3413 MKT 5 Aa,Ab 1990 1992 21 26 0.0 4.85 Y <===
Show Del Tri 55420 02171+3413 DOR 66 AB 1902 2010 7 301 166.8 4.85 13.60 8.75
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Triangulum
SAO
55420
HIP
10644
Tycho2
2318-01874-1
HD
13974
HR
660
GC
2733
ADS
1739
GL
Gl 92
BD
BD+33 395
Bayer
Delta Trianguli
Bayer name
Del Tri
Flamsteed
8 Trianguli
Flamsteed name
8 Tri
Distance
10.78
Distance ly
35.16
last precise pa
26.4
last precise sep
0.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)10.02d± 0.0001 Periastron (T)48117d (1990.616y)± 0.2 Semi-major axis (a)9.8m± 0.06
Eccentricity (e)0.02± 0.005 Inclination (i)167°± 3 Longitude of periastron (ω)121°± 11
Node (Ω)15°± 9 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation1992
label rho theta
2000-01-01 0.010 231.1
2001-01-01 0.010 69.7
2002-01-01 0.009 267.9
2003-01-01 0.010 104.1
2004-01-01 0.009 305.0
2005-01-01 0.010 138.9
2006-01-01 0.010 340.8
2007-01-01 0.010 173.6
2008-01-01 0.010 14.9
2009-01-01 0.010 208.5
2010-01-01 0.010 48.3
2011-01-01 0.009 244.4
2012-01-01 0.010 82.1
2013-01-01 0.009 281.5
2014-01-01 0.010 116.8
2015-01-01 0.010 318.3
2016-01-01 0.010 151.6
2017-01-01 0.010 353.4
2018-01-01 0.010 186.3
2019-01-01 0.010 27.1
2020-01-01 0.010 221.4
2021-01-01 0.010 60.5
2022-01-01 0.009 257.8
2023-01-01 0.010 94.7
2024-01-01 0.009 295.1
2025-01-01 0.010 129.5
2026-01-01 0.010 331.3
2027-01-01 0.010 164.3
2028-01-01 0.010 5.8
2029-01-01 0.010 199.0
2030-01-01 0.010 39.2

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic