18462+6412 HU  937

 
 
18h 46m 13.38s +64 11' 44.4" P.A. 332.7 sep 1.05 mag 8.85,9.90 Sp F8 dist. 97.75 pc (318.86 l.y.)
 
 
Coord 2000
18462+6412
Discov num
HU  937
Comp
Coord arcsec 2000
18 46 13.38 +64 11 44.4
Date first
1904
Date last
2010
Obs
52
Pa first
114
Pa last
333
P.A. Now (θ)
332.7°
Sep first
0.3
Sep last
1.1
Sep. Now (ρ)
1.05"
Mag pri
8.85
Mag sec
9.90
delta mag (ΔM)
1.05
Spectral class
F8 (yellow-white)
Pri motion ra
+022
Sec motion ra
+022
Pri motion dec
-070
Sec motion dec
-070
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
332.7
Precise sep
1.06
Constellation
Draco
SAO
18012
HIP
92100
Tycho2
4223-01516-1
ADS
11692
BD
BD+64 1290
Distance
97.75
Distance ly
318.86
last precise pa
332.7
last precise sep
1.06
 
 
ORBITAL ELEMENTS
 
 
Period (P)225.53y Periastron (T)1678.6y Semi-major axis (a)0.997a
Eccentricity (e)0.8 Inclination (i)80.1° Longitude of periastron (ω)304.4°
Node (Ω)166.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2003
label rho theta
2000 0.906 329.8
2001 0.915 330.0
2002 0.924 330.2
2003 0.933 330.4
2004 0.942 330.6
2005 0.951 330.8
2006 0.959 330.9
2007 0.968 331.1
2008 0.976 331.3
2009 0.985 331.5
2010 0.993 331.6
2011 1.001 331.8
2012 1.009 331.9
2013 1.016 332.1
2014 1.024 332.3
2015 1.032 332.4
2016 1.039 332.6
2017 1.046 332.7
2018 1.053 332.9
2019 1.060 333.0
2020 1.067 333.2
2021 1.074 333.3
2022 1.080 333.4
2023 1.087 333.6
2024 1.093 333.7
2025 1.099 333.9
2026 1.105 334.0
2027 1.111 334.1
2028 1.117 334.3
2029 1.122 334.4
2030 1.128 334.5

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

grafico orbita





wds18462%2B6412a.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
18462+6412 HU 937 2006 50 332 1.0 8.85 9.90 F8 NOD 184613.38+641144.4
18462+6412 HU 937 2010 51 333 1.1 8.85 9.90 F8 NOD 184613.38+641144.4

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