00427-6537 I   440

 
 
00H 42M 41.37S -65 36' 30.6" P.A. 265.3 SEP 0.42 MAG 7.27,8.75 SP A6V DIST. 177.3 PC (578.35 L.Y.)
 
 
Coord 2000
00427-6537
Discov num
I   440
Comp
Coord arcsec 2000
00 42 41.37 -65 36 30.6
Date first
1907
Date last
2009
Obs
17
Pa first
220
Pa last
269
P.A. Now (θ)
265.3°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.42"
Mag pri
7.27
Mag sec
8.75
delta mag (ΔM)
1.48
Spectral class
A6V (white)
Pri motion ra
+038
Sec motion ra
+038
Pri motion dec
-003
Sec motion dec
-003
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Tucana
SAO
248239
HIP
3351
Tycho2
8847-00332-1
HD
4125
CP
CP-66 50
Distance
177.3
Distance ly
578.35
last precise pa
269.4
last precise sep
0.402
 
 
ORBITAL ELEMENTS
 
 
Period (P)196y Periastron (T)2142y Semi-major axis (a)0.274a
Eccentricity (e)0.65 Inclination (i)157° Longitude of periastron (ω)344°
Node (Ω)57° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.372 275.8
2001 0.375 275.1
2002 0.378 274.4
2003 0.382 273.7
2004 0.385 273.1
2005 0.388 272.4
2006 0.391 271.8
2007 0.394 271.2
2008 0.397 270.6
2009 0.399 269.9
2010 0.402 269.3
2011 0.405 268.8
2012 0.407 268.2
2013 0.410 267.6
2014 0.412 267.0
2015 0.414 266.5
2016 0.417 265.9
2017 0.419 265.3
2018 0.421 264.8
2019 0.423 264.3
2020 0.425 263.7
2021 0.427 263.2
2022 0.429 262.7
2023 0.430 262.1
2024 0.432 261.6
2025 0.433 261.1
2026 0.435 260.6
2027 0.436 260.1
2028 0.438 259.6
2029 0.439 259.1
2030 0.440 258.6

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