19436-1528 BUP 197

 
 
19h 43m 33.45s -15 28' 10.8" P.A. 124 sep 58.6 mag 5.49,11.70 Sp F5IV dist. 48.92 pc (159.58 l.y.)
 
 
Coord 2000
19436-1528
Discov num
BUP 197
Comp
Coord arcsec 2000
19 43 33.45 -15 28 10.8
Date first
1910
Date last
2010
Obs
7
Pa first
129
Pa last
124
P.A. Now (θ)
124°
Sep first
81.8
Sep last
58.6
Sep. Now (ρ)
58.6"
Mag pri
5.49
Mag sec
11.70
delta mag (ΔM)
6.21
Spectral class
F5IV (yellow-white)
Pri motion ra
+156
Sec motion ra
Pri motion dec
-183
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
123.5
Precise sep
58.63
Cdsa2 id
BUP 197
Constellation
Sagittarius
SAO
162931
HIP
97063
HD
186185
HR
7496
GL
Wo 9666
Ra deg
19.72595833333333
De deg
-15.469666666666667
Distance
48.92
Distance ly
159.58
last precise pa
123.5
last precise sep
58.63
 
 
ORBITAL ELEMENTS
 
 
Period (P)1297d (3.55y)± 206 Periastron (T)48919d (1992.812y)± 370 Semi-major axis (a)17.3m± 2.1
Eccentricity (e)0.38± 0.16 Inclination (i)33°± 10 Longitude of periastron (ω)126°± 102
Node (Ω)222°± 122 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1991
label rho theta
2000-01-01 0.010 13.1
2001-01-01 0.018 131.2
2002-01-01 0.022 188.3
2003-01-01 0.014 253.8
2004-01-01 0.014 81.0
2005-01-01 0.020 160.0
2006-01-01 0.021 211.1
2007-01-01 0.010 348.7
2008-01-01 0.017 123.4
2009-01-01 0.022 183.3
2010-01-01 0.016 242.8
2011-01-01 0.014 68.9
2012-01-01 0.020 154.1
2013-01-01 0.021 205.6
2014-01-01 0.009 321.2
2015-01-01 0.017 115.0
2016-01-01 0.022 178.3
2017-01-01 0.017 233.8
2018-01-01 0.013 55.5
2019-01-01 0.019 147.9
2020-01-01 0.022 200.4
2021-01-01 0.010 295.3
2022-01-01 0.016 105.9
2023-01-01 0.021 173.1
2024-01-01 0.018 226.2
2025-01-01 0.012 40.0
2026-01-01 0.019 141.2
2027-01-01 0.022 195.3
2028-01-01 0.012 274.6
2029-01-01 0.015 96.1
2030-01-01 0.021 167.8

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

grafico orbita





wds19436-1528r.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
19436-1528 BUP 197 1960 2 127 70.4 5.49 11.70 F5IV 194333.45-152810.8
19436-1528 BUP 197 1985 3 125 64.5 5.49 11.70 F5IV 194333.45-152810.8
19436-1528 BUP 197 2000 6 125 61.2 5.49 11.70 F5IV 194333.45-152810.8
19436-1528 BUP 197 2010 7 124 58.6 5.49 11.70 F5IV 194333.45-152810.8

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