17053+5428 BU 1088BC

 
 
17H 05M 20.24S +54 28' 14.1" P.A. 186 SEP 13.6 MAG 5.69,13.70 SP F7V DIST. 27.43 PC (89.48 L.Y.)
 
 
Coord 2000
17053+5428
Discov num
BU 1088
Comp
BC
Coord arcsec 2000
17 05 20.24 +54 28 14.1
Date first
1889
Date last
1958
Obs
12
Pa first
191
Pa last
186
P.A. Now (θ)
186°
Sep first
12.3
Sep last
13.6
Sep. Now (ρ)
13.6"
Mag pri
5.69
Mag sec
13.70
delta mag (ΔM)
8.01
Spectral class
F7V (yellow-white)
Pri motion ra
-068
Sec motion ra
-075
Pri motion dec
+089
Sec motion dec
+089
Notes
N V (See Notes, Proper motion indicates physical)
This double is physical.
 
 
17053+5428 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Arrakis 30239 17053+5428 STF2130 AB 1779 2016 812 0 2.6 5.66 5.69 0.03 Y
Show 30239 17053+5428 BU 1088 AC 1925 2006 5 175 12.6 5.66 13.70 8.04
Show 30239 17053+5428 BU 1088 BC 1889 1958 12 186 13.6 5.69 13.70 8.01 Y <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Draco
SAO
30239
HIP
83608
Tycho2
3890-01396-1
HD
154905
HR
6369
GC
23092
ADS
10345
GL
Wo 9584B
BD
BD+54 1857
Bayer
Mu Draconis
Bayer name
Mu Dra
Flamsteed
21 Draconis
Flamsteed name
21 Dra
Distance
27.43
Distance ly
89.48
last precise pa
185.7
last precise sep
13.57
 
 
ORBITAL ELEMENTS
 
 
Period (P)3.2y Periastron (T)1915.4y Semi-major axis (a)0.026a
Eccentricity (e)0.4 Inclination (i)83.5° Longitude of periastron (ω)272.6°
Node (Ω)134.1° Note Grade9(1=Definitive, 9=Indet.)
Equinox1900 Last observation1942
label rho theta
2000 0.006 172.9
2001 0.023 308.8
2002 0.015 129.6
2003 0.012 152.2
2004 0.020 305.4
2005 0.002 66.0
2006 0.017 144.6
2007 0.015 300.0
2008 0.014 319.5
2009 0.021 140.4
2010 0.009 288.3
2011 0.022 314.5
2012 0.023 137.3
2013 0.004 246.0
2014 0.024 311.6
2015 0.022 134.3
2016 0.006 172.9
2017 0.023 308.8
2018 0.015 129.6
2019 0.012 152.2
2020 0.020 305.4
2021 0.002 66.0
2022 0.017 144.6
2023 0.015 300.0
2024 0.014 319.5
2025 0.021 140.4
2026 0.009 288.3
2027 0.022 314.5
2028 0.023 137.3
2029 0.004 246.0
2030 0.024 311.6

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