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
 
 
Precise pa
26.4
Precise sep
0.01
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)10.01969d± 0.00017 Periastron (T)48919.17d (1992.812y)± 0.8 Semi-major axis (a)9.8m± 0.13
Eccentricity (e)0.011± 0.0055 Inclination (i)163°± 3.6 Longitude of periastron (ω)171°± 29
Node (Ω)37°± 1.9 Note Grade1(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000-01-01 0.010 218.5
2001-01-01 0.010 54.9
2002-01-01 0.010 252.3
2003-01-01 0.010 88.0
2004-01-01 0.009 287.5
2005-01-01 0.009 122.9
2006-01-01 0.009 323.4
2007-01-01 0.009 158.5
2008-01-01 0.010 357.9
2009-01-01 0.010 193.1
2010-01-01 0.010 30.6
2011-01-01 0.010 226.6
2012-01-01 0.010 62.8
2013-01-01 0.010 260.8
2014-01-01 0.010 96.3
2015-01-01 0.009 296.3
2016-01-01 0.009 131.6
2017-01-01 0.009 332.0
2018-01-01 0.009 167.1
2019-01-01 0.010 6.0
2020-01-01 0.010 201.3
2021-01-01 0.010 38.4
2022-01-01 0.010 234.8
2023-01-01 0.010 70.7
2024-01-01 0.009 269.3
2025-01-01 0.009 104.8
2026-01-01 0.009 305.0
2027-01-01 0.009 140.3
2028-01-01 0.010 340.4
2029-01-01 0.010 175.5
2030-01-01 0.010 14.0

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

grafico orbita





wds02171%2B3413a.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
02171+3413 MKT 5 Aa,Ab 1992 21 26 0.0 4.85   G0 NO P 021702.42+341329.4

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