11272-1539 HU  462

 
 
11h 27m 10.78s -15 38' 55.0" P.A. 67.7 sep 0.42 mag 8.42,8.53 Sp G8V dist. 35.95 pc (117.27 l.y.)
 
 
Coord 2000
11272-1539
Discov num
HU  462
Comp
Coord arcsec 2000
11 27 10.78 -15 38 55.0
Date first
1902
Date last
2016
Obs
97
Pa first
220
Pa last
69
P.A. Now (θ)
67.7°
Sep first
0.6
Sep last
0.4
Sep. Now (ρ)
0.42"
Mag pri
8.42
Mag sec
8.53
delta mag (ΔM)
0.11
Spectral class
G8V (yellow)
Pri motion ra
+002
Sec motion ra
+002
Pri motion dec
-197
Sec motion dec
-197
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
69.3
Precise sep
0.413
Constellation
Crater
SAO
156686
HIP
55875
Tycho2
6085-00695-1
HD
99565
ADS
8166
BD
BD-14 3326
Distance
35.95
Distance ly
117.27
last precise pa
69.3
last precise sep
0.413
 
 
ORBITAL ELEMENTS
 
 
Period (P)48.4y± 0.11 Periastron (T)2008.46y± 0.49 Semi-major axis (a)0.445a± 0.003
Eccentricity (e)0.087± 0.004 Inclination (i)166.5°± 2.9 Longitude of periastron (ω)347.7°± 10.5
Node (Ω)127.6°± 11.7 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.418 212.0
2001 0.414 203.7
2002 0.411 195.4
2003 0.409 186.9
2004 0.407 178.3
2005 0.406 169.6
2006 0.405 160.9
2007 0.405 152.2
2008 0.405 143.6
2009 0.406 134.9
2010 0.407 126.3
2011 0.408 117.7
2012 0.410 109.2
2013 0.412 100.7
2014 0.414 92.3
2015 0.416 84.0
2016 0.419 75.8
2017 0.422 67.7
2018 0.425 59.8
2019 0.429 52.0
2020 0.433 44.3
2021 0.438 36.8
2022 0.443 29.4
2023 0.448 22.2
2024 0.453 15.2
2025 0.458 8.3
2026 0.463 1.6
2027 0.468 355.0
2028 0.472 348.6
2029 0.476 342.2
2030 0.479 336.0

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

grafico orbita





wds11272-1539a.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
11272-1539 HU 462 2005 88 165 0.4 8.42 8.53 G8V NOD 112710.78-153855.0
11272-1539 HU 462 2009 90 134 0.4 8.42 8.53 G8V NOD 112710.78-153855.0
11272-1539 HU 462 2010 94 134 0.4 8.42 8.53 G8V NOD 112710.78-153855.0
11272-1539 HU 462 2011 95 118 0.4 8.42 8.53 G8V NOD 112710.78-153855.0
11272-1539 HU 462 2013 96 97 0.4 8.42 8.53 G8V NOD 112710.78-153855.0
11272-1539 HU 462 2014 96 92 0.4 8.42 8.53 G8V NO 112710.78-153855.0
11272-1539 HU 462 2016 97 69 0.4 8.42 8.53 G8V NO 112710.78-153855.0

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