18054+6216 HU 1290

 
 
18h 05m 21.36s +62 15' 58.6" P.A. 311 sep 0.34 mag 9.29,9.73 Sp F8 dist. 128.21 pc (418.22 l.y.)
 
 
Coord 2000
18054+6216
Discov num
HU 1290
Comp
Coord arcsec 2000
18 05 21.36 +62 15 58.6
Date first
1905
Date last
2007
Obs
26
Pa first
138
Pa last
310
P.A. Now (θ)
311°
Sep first
0.4
Sep last
0.2
Sep. Now (ρ)
0.34"
Mag pri
9.29
Mag sec
9.73
delta mag (ΔM)
0.44
Spectral class
F8 (yellow-white)
Pri motion ra
-020
Sec motion ra
Pri motion dec
+060
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
309.6
Precise sep
0.224
Constellation
Draco
SAO
17751
HIP
88592
Tycho2
4205-00360-1
HD
166206
ADS
11073
BD
BD+62 1595
Distance
128.21
Distance ly
418.22
last precise pa
309.6
last precise sep
0.224
 
 
ORBITAL ELEMENTS
 
 
Period (P)294.94y± 10.03 Periastron (T)1985.026y± 44.81 Semi-major axis (a)0.4755a± 0.0528
Eccentricity (e)0.2567± 0.0514 Inclination (i)120.35°± 0.48 Longitude of periastron (ω)80.56°± 12.5
Node (Ω)110.45°± 6.4 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1953
label rho theta
2000 0.218 342.0
2001 0.225 339.2
2002 0.231 336.6
2003 0.238 334.2
2004 0.246 331.9
2005 0.253 329.7
2006 0.260 327.7
2007 0.268 325.7
2008 0.275 323.9
2009 0.283 322.2
2010 0.290 320.5
2011 0.298 319.0
2012 0.305 317.5
2013 0.312 316.1
2014 0.320 314.7
2015 0.327 313.4
2016 0.334 312.2
2017 0.341 311.0
2018 0.348 309.9
2019 0.355 308.8
2020 0.361 307.7
2021 0.368 306.7
2022 0.374 305.7
2023 0.380 304.8
2024 0.386 303.9
2025 0.392 303.0
2026 0.397 302.1
2027 0.403 301.3
2028 0.408 300.4
2029 0.413 299.6
2030 0.418 298.9

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

grafico orbita





wds18054%2B6216a.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
18054+6216 HU 1290 1993 25 16 0.2 9.29 9.73 F8 O 180521.36+621558.6
18054+6216 HU 1290 2007 26 310 0.2 9.29 9.73 F8 O 180521.36+621558.6

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