01220-6943 I   263

 
 
01H 21M 58.64S -69 43' 07.6" P.A. 290.9 SEP 0.4 MAG 7.66,8.61 SP F3V DIST. 89.61 PC (292.31 L.Y.)
 
 
Coord 2000
01220-6943
Discov num
I   263
Comp
Coord arcsec 2000
01 21 58.64 -69 43 07.6
Date first
1897
Date last
2014
Obs
47
Pa first
52
Pa last
289
P.A. Now (θ)
290.9°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
7.66
Mag sec
8.61
delta mag (ΔM)
0.95
Spectral class
F3V (yellow-white)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
+006
Sec motion dec
+006
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Tucana
SAO
248370
HIP
6377
Tycho2
9136-01600-1
HD
8519
CP
CP-70 64
Distance
89.61
Distance ly
292.31
last precise pa
288.8
last precise sep
0.397
 
 
ORBITAL ELEMENTS
 
 
Period (P)272.15y± 47.48 Periastron (T)1936.56y± 5.3 Semi-major axis (a)0.791a± 0.075
Eccentricity (e)0.374± 0.059 Inclination (i)68.6°± 1.9 Longitude of periastron (ω)297.3°± 14.1
Node (Ω)231.3°± 2.8 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.491 266.0
2001 0.484 267.2
2002 0.478 268.4
2003 0.472 269.7
2004 0.466 270.9
2005 0.459 272.2
2006 0.453 273.6
2007 0.447 275.0
2008 0.441 276.4
2009 0.436 277.9
2010 0.430 279.3
2011 0.425 280.9
2012 0.419 282.5
2013 0.414 284.1
2014 0.409 285.7
2015 0.405 287.4
2016 0.400 289.1
2017 0.396 290.9
2018 0.392 292.7
2019 0.388 294.6
2020 0.385 296.4
2021 0.382 298.3
2022 0.379 300.3
2023 0.377 302.2
2024 0.375 304.2
2025 0.373 306.2
2026 0.372 308.2
2027 0.371 310.3
2028 0.370 312.3
2029 0.370 314.4
2030 0.370 316.4

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