01554+0257 A  2407

 
 
01H 55M 22.03S +02 57' 24.1" P.A. 324.8 SEP 0.62 MAG 10.05,10.50 SP K0 DIST. 45.17 PC (147.34 L.Y.)
 
 
Coord 2000
01554+0257
Discov num
A  2407
Comp
Coord arcsec 2000
01 55 22.03 +02 57 24.1
Date first
1912
Date last
2014
Obs
24
Pa first
104
Pa last
330
P.A. Now (θ)
324.8°
Sep first
0.5
Sep last
0.6
Sep. Now (ρ)
0.62"
Mag pri
10.05
Mag sec
10.50
delta mag (ΔM)
0.45
Spectral class
K0 (yellow-orange)
Pri motion ra
-005
Sec motion ra
-005
Pri motion dec
-047
Sec motion dec
-047
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
HIP
8958
Tycho2
0033-00105-1
ADS
1530
BD
BD+02 296
Distance
45.17
Distance ly
147.34
last precise pa
330.4
last precise sep
0.649
 
 
ORBITAL ELEMENTS
 
 
Period (P)183.87y± 4.4 Periastron (T)1971.43y± 4.14 Semi-major axis (a)0.689a± 0.061
Eccentricity (e)0.07± 0.03 Inclination (i)46°± 2.9 Longitude of periastron (ω)45.3°± 25.6
Node (Ω)172.8°± 4.8 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 0.485 288.1
2001 0.492 290.8
2002 0.498 293.5
2003 0.506 296.0
2004 0.513 298.5
2005 0.521 300.9
2006 0.529 303.3
2007 0.537 305.5
2008 0.546 307.7
2009 0.554 309.8
2010 0.563 311.9
2011 0.572 313.9
2012 0.580 315.8
2013 0.589 317.7
2014 0.597 319.6
2015 0.606 321.3
2016 0.614 323.1
2017 0.622 324.8
2018 0.630 326.4
2019 0.637 328.0
2020 0.645 329.6
2021 0.652 331.1
2022 0.659 332.6
2023 0.666 334.1
2024 0.672 335.5
2025 0.678 336.9
2026 0.683 338.3
2027 0.689 339.7
2028 0.694 341.0
2029 0.698 342.4
2030 0.702 343.7

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