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
Constellation
Sagittarius
SAO
162931
HIP
97063
Tycho2
6299-02606-1
HD
186185
HR
7496
GL
Wo 9666
BD
BD-15 5444
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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