15038+4739 STF1909 (44 Boo)

 
 
15h 03m 47.30s +47 39' 14.6" P.A. 73.9 sep 0.69 mag 5.20,6.10 Sp F7V+K4V dist. 12.51 pc (40.81 l.y.)
 
 
Coord 2000
15038+4739
Discov num
STF1909
Comp
Coord arcsec 2000
15 03 47.30 +47 39 14.6
Date first
1819
Date last
2016
Obs
832
Pa first
228
Pa last
72
P.A. Now (θ)
73.9°
Sep first
1.5
Sep last
0.9
Sep. Now (ρ)
0.69"
Mag pri
5.20
Mag sec
6.10
delta mag (ΔM)
0.9
Spectral class
F7V+K4V (yellow-white/yellow-orange)
Pri motion ra
-444
Sec motion ra
-374
Pri motion dec
+010
Sec motion dec
+039
Notes
N O (See Notes, Orbital solution)
rPM=0.171 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
72.1
Precise sep
0.91
Name
44 Boo
Other name
i Boo
Var name
I Boo
Constellation
Bootes
SAO
45357
HIP
73695
Tycho2
3484-01580-1
HD
133640
HR
5618
GC
20281
ADS
9494
GL
Gl 575A
BD
BD+48 2259
Flamsteed
44 Bootis
Flamsteed name
44 Boo
Distance
12.51
Distance ly
40.81
last precise pa
72.1
last precise sep
0.91
 
 
ORBITAL ELEMENTS
 
 
Period (P)209.8y± 3.3 Periastron (T)2012.04y± 0.26 Semi-major axis (a)3.666a± 0.021
Eccentricity (e)0.5111± 0.0065 Inclination (i)83.55°± 0.05 Longitude of periastron (ω)39.86°± 0.68
Node (Ω)57.14°± 0.06 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 2.022 54.3
2001 2.027 54.8
2002 2.024 55.3
2003 2.011 55.9
2004 1.988 56.4
2005 1.954 57.0
2006 1.909 57.6
2007 1.851 58.2
2008 1.782 58.9
2009 1.701 59.7
2010 1.608 60.5
2011 1.503 61.4
2012 1.387 62.5
2013 1.261 63.7
2014 1.126 65.3
2015 0.983 67.3
2016 0.836 70.0
2017 0.685 73.9
2018 0.534 80.0
2019 0.391 90.7
2020 0.273 112.1
2021 0.230 150.3
2022 0.297 185.0
2023 0.424 202.9
2024 0.571 212.2
2025 0.724 217.5
2026 0.879 221.0
2027 1.033 223.5
2028 1.185 225.3
2029 1.335 226.7
2030 1.481 227.8

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds15038%2B4739b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15038+4739 STF1909 2007 775 60 1.8 5.20 6.10 F7V+K4V NOD 150347.30+473914.6
15038+4739 STF1909 2008 777 59 1.7 5.20 6.10 F7V+K4V NOD 150347.30+473914.6
15038+4739 STF1909 2010 789 61 1.6 5.20 6.10 F7V+K4V NOD 150347.30+473914.6
15038+4739 STF1909 2011 795 62 1.5 5.20 6.10 F7V K4V NOD 150347.30+473914.6
15038+4739 STF1909 2012 796 63 1.2 5.20 6.10 F7V K4V NOD 150347.30+473914.6
15038+4739 STF1909 2013 798 63 1.2 5.20 6.10 F7V K4V NOD 150347.30+473914.6
15038+4739 STF1909 2014 811 66 1.1 5.20 6.10 F7V K4V NOD 150347.30+473914.6
15038+4739 STF1909 2015 817 69 1.0 5.20 6.10 F7V+K4V NO 150347.30+473914.6
15038+4739 STF1909 2016 832 72 0.9 5.20 6.10 F7V+K4V NO 150347.30+473914.6

If you need more information about this double, apply for a data request form to the WDS.