12444+2200 HDS1783

 
 
12h 44m 22.61s +21 59' 36.5" P.A. 106.7 sep 0.23 mag 7.76,10.96 Sp F6V dist. 131.93 pc (430.36 l.y.)
 
 
Coord 2000
12444+2200
Discov num
HDS1783
Comp
Coord arcsec 2000
12 44 22.61 +21 59 36.5
Date first
1991
Date last
2017
Obs
11
Pa first
214
Pa last
280
P.A. Now (θ)
106.7°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.23"
Mag pri
7.76
Mag sec
10.96
delta mag (ΔM)
3.2
Spectral class
F6V (yellow-white)
Pri motion ra
-127
Sec motion ra
Pri motion dec
-194
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Spectr
A0V
Constellation
Carina
SAO
250413
HIP
44135
Tycho2
8931-01802-1
HD
77455
CP
CP-62 1145
Distance
131.93
Distance ly
430.36
last precise pa
279.6
last precise sep
0.169
 
 
ORBITAL ELEMENTS
 
 
Period (P)117.68y Periastron (T)2014.466y Semi-major axis (a)0.492a
Eccentricity (e)0.836 Inclination (i)70.3° Longitude of periastron (ω)255.4°
Node (Ω)102.8° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.223 235.9
2001 0.222 238.7
2002 0.221 241.5
2003 0.219 244.3
2004 0.217 247.2
2005 0.214 250.2
2006 0.211 253.2
2007 0.207 256.3
2008 0.202 259.6
2009 0.194 263.1
2010 0.184 266.9
2011 0.170 271.3
2012 0.149 276.6
2013 0.115 284.4
2014 0.061 302.9
2015 0.038 55.3
2016 0.103 90.9
2017 0.156 99.3
2018 0.197 103.7
2019 0.230 106.7
2020 0.258 109.0
2021 0.281 110.9
2022 0.301 112.5
2023 0.318 114.0
2024 0.334 115.2
2025 0.347 116.4
2026 0.359 117.5
2027 0.370 118.6
2028 0.379 119.5
2029 0.388 120.5
2030 0.396 121.4

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

grafico orbita





wds12444%2B2200a.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
12444+2200 HDS1783 1991 1 214 0.2 7.76 10.96 F6V 124422.70+215938.3
12444+2200 HDS1783 2009 2 264 0.2 7.76 10.96 F6V 124422.70+215938.3
12444+2200 HDS1783 2012 7 278 0.1 7.76 10.96 F6V D 124422.70+215938.3
12444+2200 HDS1783 2017 11 280 0.2 7.76 10.96 F6V 124422.61+215936.5

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