15355-4751 HDS 2191 (HD 138676)
15h 35m 28.34s -47° 50' 56.7" P.A. 202.00 sep 0.3 mag 9.41,10.06 Sp G8IV/V dist. 63.05 pc (205.67 l.y.)
| Coord 2000 |
15355-4751 |
|
Discov num |
HDS2191 |
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Comp |
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Coord arcsec 2000 |
15 35 28.34 -47 50 56.7 |
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| Date first |
1991 |
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Date last |
2018 |
|
Obs |
6 |
|
| Pa first |
202 |
|
Pa last |
202.1 |
|
P.A. Now (θ) |
202.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.292 |
|
Sep. Now (ρ) |
0.292" |
|
| Mag pri |
9.41 |
|
Mag sec |
10.06 |
|
delta mag (ΔM) |
0.65 |
|
Spectral class |
G8IV/V (yellow) |
|
| Pri motion ra |
+062 |
|
Sec motion ra |
|
|
| Pri motion dec |
-080 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 138676 |
|
Constellation |
Lupus |
|
SAO |
225940 |
|
HIP |
76328 |
|
| Tycho2 |
8300-01231-1 |
|
Gaia DR2 |
5986663418249820416 |
|
HD |
138676 |
|
CD |
CD-4710123 |
|
| CP |
CP-47 7232 |
|
Distance |
63.05 |
|
Distance ly |
205.67 |
|
ORBITAL ELEMENTS
| Period (P) | 62.52y | ± 14.96 |
Periastron (T) | 2005.25y | ± 1.1 |
Semi-major axis (a) | 0.302a | ± 0.037 |
| Eccentricity (e) | 0.315 | ± 0.243 |
Inclination (i) | 88.6° | ± 0.9 |
Longitude of periastron (ω) | 267.1° | ± 14.6 |
| Node (Ω) | 201.9° | ± 1.1 |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
22.7 |
0.200 |
| 2001 |
23.1 |
0.171 |
| 2002 |
23.6 |
0.138 |
| 2003 |
24.5 |
0.102 |
| 2004 |
26.4 |
0.062 |
| 2005 |
35.4 |
0.022 |
| 2006 |
188.4 |
0.022 |
| 2007 |
197.4 |
0.063 |
| 2008 |
199.3 |
0.102 |
| 2009 |
200.2 |
0.139 |
| 2010 |
200.7 |
0.172 |
| 2011 |
201.0 |
0.201 |
| 2012 |
201.3 |
0.225 |
| 2013 |
201.5 |
0.246 |
| 2014 |
201.7 |
0.262 |
| 2015 |
201.9 |
0.275 |
| 2016 |
202.0 |
0.284 |
| 2017 |
202.2 |
0.289 |
| 2018 |
202.3 |
0.291 |
| 2019 |
202.5 |
0.291 |
| 2020 |
202.6 |
0.288 |
| 2021 |
202.8 |
0.282 |
| 2022 |
202.9 |
0.274 |
| 2023 |
203.1 |
0.265 |
| 2024 |
203.3 |
0.253 |
| 2025 |
203.5 |
0.240 |
| 2026 |
203.7 |
0.226 |
| 2027 |
204.0 |
0.210 |
| 2028 |
204.3 |
0.193 |
| 2029 |
204.6 |
0.175 |
| 2030 |
205.1 |
0.156 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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