16446+7145 MLR 182Aa,Ab

 
 
16H 44M 36.02S +71 45' 25.0" P.A. 223 SEP 0.25 MAG 9.15,10.21 SP G5 DIST. 62.38 PC (203.48 L.Y.)
 
 
Coord 2000
16446+7145
Discov num
MLR 182
Comp
Aa,Ab
Coord arcsec 2000
16 44 36.02 +71 45 25.0
Date first
1971
Date last
2008
Obs
21
Pa first
91
Pa last
284
P.A. Now (θ)
223°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.25"
Mag pri
9.15
Mag sec
10.21
delta mag (ΔM)
1.06
Spectral class
G5 (yellow)
Pri motion ra
-109
Sec motion ra
Pri motion dec
+118
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
16446+7145 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 8611 16446+7145 MLR 182 Aa,Ab 1971 2008 21 223 0.2 9.15 10.21 1.06 Y <===
Show 8611 16446+7145 UC 3219 AB 1999 2004 2 113 27.7 8.90 13.40 4.50
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Draco
SAO
8611
HIP
81961
Tycho2
4423-01079-1
HD
152027
BD
BD+72 751
Distance
62.38
Distance ly
203.48
last precise pa
284.4
last precise sep
0.297
 
 
ORBITAL ELEMENTS
 
 
Period (P)62y Periastron (T)1977.5y Semi-major axis (a)0.263a
Eccentricity (e)0.19 Inclination (i)121° Longitude of periastron (ω)358°
Node (Ω)64.7° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.257 266.1
2001 0.268 263.1
2002 0.278 260.4
2003 0.288 257.9
2004 0.295 255.5
2005 0.302 253.2
2006 0.307 251.0
2007 0.310 248.9
2008 0.312 246.8
2009 0.313 244.7
2010 0.312 242.6
2011 0.310 240.5
2012 0.306 238.4
2013 0.300 236.2
2014 0.293 233.9
2015 0.285 231.4
2016 0.276 228.9
2017 0.265 226.1
2018 0.253 223.0
2019 0.240 219.7
2020 0.226 216.0
2021 0.212 211.7
2022 0.197 206.9
2023 0.182 201.2
2024 0.168 194.6
2025 0.155 186.7
2026 0.143 177.5
2027 0.135 167.0
2028 0.130 155.3
2029 0.129 143.1
2030 0.133 131.2

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