02280+0158 KUI   8

 
 
02H 27M 59.93S +01 57' 39.1" P.A. 39.8 SEP 0.49 MAG 7.09,7.63 SP K0III DIST. 166.67 PC (543.68 L.Y.)
 
 
Coord 2000
02280+0158
Discov num
KUI   8
Comp
Coord arcsec 2000
02 27 59.93 +01 57 39.1
Date first
1937
Date last
2008
Obs
128
Pa first
20
Pa last
39
P.A. Now (θ)
39.8°
Sep first
0.3
Sep last
0.5
Sep. Now (ρ)
0.49"
Mag pri
7.09
Mag sec
7.63
delta mag (ΔM)
0.54
Spectral class
K0III (yellow-orange)
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-014
Sec motion dec
-014
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
SAO
110542
HIP
11474
Tycho2
0039-01123-1
HD
15328
HR
719
BD
BD+01 431
Distance
166.67
Distance ly
543.68
last precise pa
38.8
last precise sep
0.51
 
 
ORBITAL ELEMENTS
 
 
Period (P)653y Periastron (T)1922.3y Semi-major axis (a)0.769a
Eccentricity (e)0.545 Inclination (i)79.9° Longitude of periastron (ω)291.4°
Node (Ω)28.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.509 36.5
2001 0.508 36.7
2002 0.507 36.9
2003 0.506 37.1
2004 0.505 37.3
2005 0.504 37.5
2006 0.503 37.7
2007 0.501 37.9
2008 0.500 38.1
2009 0.499 38.2
2010 0.497 38.4
2011 0.496 38.6
2012 0.494 38.8
2013 0.493 39.0
2014 0.491 39.2
2015 0.489 39.4
2016 0.487 39.6
2017 0.486 39.8
2018 0.484 40.0
2019 0.482 40.2
2020 0.480 40.4
2021 0.478 40.7
2022 0.476 40.9
2023 0.474 41.1
2024 0.472 41.3
2025 0.469 41.5
2026 0.467 41.7
2027 0.465 41.9
2028 0.463 42.2
2029 0.460 42.4
2030 0.458 42.6

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