01262-6751 DON  17

 
 
01h 26m 09.45s -67 50' 33.0" P.A. 290.70 sep 1.4 mag 8.81,9.81 Sp K0IV dist. 63.09 pc (205.8 l.y.)
 
 
Coord 2000
01262-6751
Discov num
DON  17
Comp
Coord arcsec 2000
01 26 09.45 -67 50 33.0
Date first
1928
Date last
2019
Obs
38
Pa first
357
Pa last
291
P.A. Now (θ)
290.7°
Sep first
0.7
Sep last
1.4
Sep. Now (ρ)
1.4"
Mag pri
8.81
Mag sec
9.81
delta mag (ΔM)
1
Spectral class
K0IV (yellow-orange)
Pri motion ra
+117
Sec motion ra
+117
Pri motion dec
-062
Sec motion dec
-062
Notes
O (Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
290.6
Precise sep
1.414
Constellation
Hydrus
SAO
248383
HIP
6703
Tycho2
9136-00265-1
Gaia DR2
16248469120
HD
8944
CD
CD-68 58
CP
CP-68 57
Distance
63.09
Distance ly
205.8
last precise pa
290.6
last precise sep
1.414
 
 
ORBITAL ELEMENTS
 
 
Period (P)374.1934y± 133.5931 Periastron (T)1948.7445y± 1.8322 Semi-major axis (a)1.15202a± 0.14288
Eccentricity (e)0.8491± 0.04483 Inclination (i)47.47°± 10.538 Longitude of periastron (ω)347.654°± 9.806
Node (Ω)134.941°± 6.087 Note Grade4(1=Definitive, 9=Indet.)
Equinox Last observation2015
label rho theta
2000 1.125 285.0
2001 1.140 285.3
2002 1.156 285.7
2003 1.171 286.0
2004 1.186 286.3
2005 1.201 286.7
2006 1.215 287.0
2007 1.230 287.3
2008 1.244 287.6
2009 1.258 287.9
2010 1.272 288.2
2011 1.286 288.4
2012 1.300 288.7
2013 1.313 289.0
2014 1.327 289.2
2015 1.340 289.5
2016 1.353 289.7
2017 1.366 290.0
2018 1.379 290.2
2019 1.392 290.5
2020 1.404 290.7
2021 1.416 290.9
2022 1.429 291.2
2023 1.441 291.4
2024 1.453 291.6
2025 1.464 291.8
2026 1.476 292.0
2027 1.488 292.2
2028 1.499 292.4
2029 1.510 292.6
2030 1.521 292.8

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






wds01262-6751b.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
01262-6751 DON 17 1991 16 280 0.9 8.81 9.81 K0IV NOD 012609.45-675033.0
01262-6751 DON 17 2008 17 288 1.3 8.81 9.81 K0IV NOD 012609.45-675033.0
01262-6751 DON 17 2010 18 288 1.3 8.81 9.81 K0IV NOD 012609.45-675033.0
01262-6751 DON 17 2012 20 289 1.3 8.81 9.81 K0IV NO 012609.45-675033.0
01262-6751 DON 17 2014 21 290 1.3 8.81 9.81 K0IV O 012609.45-675033.0
01262-6751 DON 17 2015 24 290 1.4 8.81 9.81 K0IV O 012609.45-675033.0
01262-6751 DON 17 2017 27 290 1.4 8.81 9.81 K0IV O 012609.45-675033.0
01262-6751 DON 17 2018 32 291 1.4 8.81 9.81 K0IV O 012609.45-675033.0
01262-6751 DON 17 2019 38 291 1.4 8.81 9.81 K0IV O 012609.45-675033.0

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