02422+4012 MCA   8 (12 Per)

 
 
02H 42M 14.93S +40 11' 39.8" P.A. 298 SEP 0.1 MAG 5.50,5.90 SP F9V DIST. 24.19 PC (78.91 L.Y.)
 
 
Coord 2000
02422+4012
Discov num
MCA   8
Comp
Coord arcsec 2000
02 42 14.93 +40 11 39.8
Date first
1973
Date last
2014
Obs
59
Pa first
309
Pa last
298
P.A. Now (θ)
298°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
5.50
Mag sec
5.90
delta mag (ΔM)
0.4
Spectral class
F9V (yellow-white)
Pri motion ra
-019
Sec motion ra
Pri motion dec
-186
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
12 Per
Constellation
Perseus
SAO
55793
HIP
12623
Tycho2
2849-02054-1
HD
16739
HR
788
GC
3245
GL
Gl 105.6
BD
BD+39 610
Flamsteed
12 Persei
Flamsteed name
12 Per
Distance
24.19
Distance ly
78.91
last precise pa
298.2
last precise sep
0.053
 
 
ORBITAL ELEMENTS
 
 
Period (P)330.98209d Periastron (T)1993.33956y Semi-major axis (a)53.18m± 0.15
Eccentricity (e)0.6574 Inclination (i)128.17°± 0.14 Longitude of periastron (ω)269.29°
Node (Ω)49.29° Note Grade8(1=Definitive, 9=Indet.)
Equinox Last observation2004
label rho theta
2000-01-01 0.054 344.5
2001-01-01 0.055 327.9
2002-01-01 0.054 311.3
2003-01-01 0.053 294.4
2004-01-01 0.051 276.5
2005-01-01 0.044 255.2
2006-01-01 0.020 208.8
2007-01-01 0.035 41.9
2008-01-01 0.049 14.6
2009-01-01 0.053 355.8
2010-01-01 0.054 338.8
2011-01-01 0.054 322.3
2012-01-01 0.054 305.7
2013-01-01 0.053 288.5
2014-01-01 0.049 269.9
2015-01-01 0.039 245.6
2016-01-01 0.012 118.6
2017-01-01 0.041 30.5
2018-01-01 0.051 7.8
2019-01-01 0.054 349.9
2020-01-01 0.054 333.2
2021-01-01 0.054 316.7
2022-01-01 0.054 299.9
2023-01-01 0.052 282.5
2024-01-01 0.047 262.8
2025-01-01 0.032 232.4
2026-01-01 0.025 59.6
2027-01-01 0.046 21.7
2028-01-01 0.052 1.5
2029-01-01 0.054 344.2
2030-01-01 0.055 327.6

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