09207-0742 A  1082AB

 
 
09h 20m 39.31s -07 41' 56.0" P.A. 199.50 sep 0.6 mag 9.30,10.40 Sp K0
 
 
Coord 2000
09207-0742
Discov num
A  1082
Comp
AB
Coord arcsec 2000
09 20 39.31 -07 41 56.0
Date first
1905
Date last
2019
Obs
23
Pa first
160
Pa last
200
P.A. Now (θ)
199.5°
Sep first
0.8
Sep last
0.6
Sep. Now (ρ)
0.59"
Mag pri
9.30
Mag sec
10.40
delta mag (ΔM)
1.1
Spectral class
K0 (yellow-orange)
Pri motion ra
-135
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
09207-0742 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 09 20 39 -07 41 56 A 1082 AB 2019 23 200 0.6 9.30 10.40 1.10 Y <===
Show 09 20 44 -07 43 48 BGH 4 CA 2015 17 326 135.0 7.46 9.30 1.84
Show 09 20 44 -07 43 48 TOK 527 CD 2015 4 342 999.9 7.46 17.80 10.34
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
200.2
Precise sep
0.586
Constellation
Hydra
Tycho2
5459-00108-1
Gaia DR2
5744858885451276544
HD
80615
ADS
7316
last precise pa
200.2
last precise sep
0.586
 
 
ORBITAL ELEMENTS
 
 
Period (P)212.7y Periastron (T)1987.66y Semi-major axis (a)0.6a
Eccentricity (e)0.644 Inclination (i)127° Longitude of periastron (ω)24.2°
Node (Ω) Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.232 240.6
2001 0.250 235.8
2002 0.269 231.6
2003 0.288 228.0
2004 0.307 224.8
2005 0.326 222.0
2006 0.345 219.6
2007 0.364 217.3
2008 0.383 215.3
2009 0.401 213.5
2010 0.419 211.8
2011 0.436 210.3
2012 0.453 208.9
2013 0.470 207.5
2014 0.486 206.3
2015 0.502 205.2
2016 0.518 204.1
2017 0.533 203.1
2018 0.548 202.1
2019 0.562 201.2
2020 0.576 200.3
2021 0.590 199.5
2022 0.604 198.7
2023 0.617 198.0
2024 0.630 197.2
2025 0.642 196.5
2026 0.654 195.9
2027 0.666 195.2
2028 0.677 194.6
2029 0.689 194.0
2030 0.700 193.4


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



 
 


wds09207-0742b.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
09207-0742 A 1082 AB 1991 17 327 0.2 9.40 10.40 K0 NO 092039.31-074156.0
09207-0742 A 1082 AB 2009 18 214 0.4 9.40 10.40 K0 NO 092039.31-074156.0
09207-0742 A 1082 AB 2011 19 211 0.4 9.30 10.40 K0 NO 092039.31-074156.0
09207-0742 A 1082 AB 2013 20 207 0.5 9.30 10.40 K0 NO 092039.31-074156.0
09207-0742 A 1082 AB 2019 22 200 0.6 9.30 10.40 K0 O 092039.31-074156.0

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