02442+4914 STF 296AB (The Per)

 
 
02H 44M 11.99S +49 13' 42.4" P.A. 304.7 SEP 20.36 MAG 4.16,10.00 SP F7V+M1.5 DIST. 11.13 PC (36.31 L.Y.)
 
 
Coord 2000
02442+4914
Discov num
STF 296
Comp
AB
Coord arcsec 2000
02 44 11.99 +49 13 42.4
Date first
1782
Date last
2015
Obs
77
Pa first
290
Pa last
305
P.A. Now (θ)
304.7°
Sep first
13.5
Sep last
19.9
Sep. Now (ρ)
20.36"
Mag pri
4.16
Mag sec
10.00
delta mag (ΔM)
5.84
Spectral class
F7V+M1.5 (yellow-white/red)
Pri motion ra
+335
Sec motion ra
+336
Pri motion dec
-090
Sec motion dec
-084
Notes
N O V (See Notes, Orbital solution, Proper motion indicates physical)
rPM=0.018 (< 0.3, Physical double)
This double is physical.
 
 
02442+4914 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show The Per 38288 02442+4914 STF 296 AB 1782 2015 77 305 20.4 4.16 10.00 5.84 Y <===
Show 38288 02442+4914 STF 296 AC 1852 2002 17 244 94.8 4.16 11.08 6.92
Show 38288 02442+4914 STF 296 BC 1880 2007 13 232 88.2 10.00 11.08 1.08
Show 38288 02442+4914 TNN 4 BD 2004 2004 1 161 6.2 5.87 17.70 11.83
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
The Per
Constellation
Perseus
SAO
38288
HIP
12777
HD
16895
HR
799
GC
3277
ADS
2081
GL
Gl 107A
BD
BD+48 746
Bayer
Theta Persei
Bayer name
The Per
Flamsteed
13 Persei
Flamsteed name
13 Per
Distance
11.13
Distance ly
36.31
last precise pa
305
last precise sep
19.9
 
 
ORBITAL ELEMENTS
 
 
Period (P)2720y Periastron (T)1613y Semi-major axis (a)22.289a
Eccentricity (e)0.13 Inclination (i)75.44° Longitude of periastron (ω)100.64°
Node (Ω)128° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2015
label rho theta
2000 20.042 304.1
2001 20.062 304.1
2002 20.081 304.1
2003 20.100 304.2
2004 20.119 304.2
2005 20.138 304.3
2006 20.157 304.3
2007 20.175 304.3
2008 20.194 304.4
2009 20.212 304.4
2010 20.230 304.5
2011 20.249 304.5
2012 20.267 304.5
2013 20.284 304.6
2014 20.302 304.6
2015 20.320 304.7
2016 20.337 304.7
2017 20.355 304.7
2018 20.372 304.8
2019 20.389 304.8
2020 20.406 304.9
2021 20.423 304.9
2022 20.440 304.9
2023 20.457 305.0
2024 20.473 305.0
2025 20.490 305.1
2026 20.506 305.1
2027 20.522 305.1
2028 20.538 305.2
2029 20.554 305.2
2030 20.570 305.3

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