15290-2852 BU 1114 AB
15h 28m 58.69s -28° 52' 00.5" P.A. 317.00 sep 0.2 mag 6.98,7.76 Sp F6IV dist. 58.62 pc (191.22 l.y.)
| Coord 2000 |
15290-2852 |
|
Discov num |
BU 1114 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 28 58.69 -28 52 00.5 |
|
| Date first |
1889 |
|
Date last |
2018 |
|
Obs |
27 |
|
| Pa first |
326 |
|
Pa last |
316.6 |
|
P.A. Now (θ) |
316.6° |
|
| Sep first |
0.7 |
|
Sep last |
0.224 |
|
Sep. Now (ρ) |
0.224" |
|
| Mag pri |
6.98 |
|
Mag sec |
7.76 |
|
delta mag (ΔM) |
0.78 |
|
Spectral class |
F6IV (yellow-white) |
|
| Pri motion ra |
-030 |
|
Sec motion ra |
-030 |
|
| Pri motion dec |
-076 |
|
Sec motion dec |
-076 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
15290-2852 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
183506 |
15 28 59 -28 52 00 |
BU 1114 AB |
2018 |
27 |
317 |
0.2 |
6.98 |
7.76 |
0.78 |
Y |
<=== |
| Show |
HD 137798 |
183506 |
15 28 59 -28 52 00 |
HJ 4774 AB,C |
2016 |
20 |
11 |
9.7 |
6.98 |
9.63 |
2.65 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Libra |
|
SAO |
183506 |
|
HIP |
75790 |
|
Tycho2 |
6775-01270-1 |
|
| Gaia DR2 |
6209882180072601984 |
|
HD |
137798 |
|
GC |
20800 |
|
ADS |
9659 |
|
| CD |
CD-2811366 |
|
CP |
CP-28 5130 |
|
Distance |
58.62 |
|
Distance ly |
191.22 |
|
ORBITAL ELEMENTS
| Period (P) | 205y | |
Periastron (T) | 2047.16y | ± 4.45 |
Semi-major axis (a) | 0.7219a | ± 0.0272 |
| Eccentricity (e) | 0.498 | ± 0.045 |
Inclination (i) | 90.6° | ± 0.3 |
Longitude of periastron (ω) | 359.5° | ± 5.4 |
| Node (Ω) | 138.3° | ± 0.5 |
Notes | n | |
Reference | Tok2016e | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
317.7 |
0.608 |
| 2001 |
317.7 |
0.590 |
| 2002 |
317.7 |
0.572 |
| 2003 |
317.6 |
0.553 |
| 2004 |
317.6 |
0.534 |
| 2005 |
317.6 |
0.514 |
| 2006 |
317.6 |
0.495 |
| 2007 |
317.5 |
0.474 |
| 2008 |
317.5 |
0.454 |
| 2009 |
317.4 |
0.433 |
| 2010 |
317.4 |
0.412 |
| 2011 |
317.3 |
0.390 |
| 2012 |
317.3 |
0.369 |
| 2013 |
317.2 |
0.346 |
| 2014 |
317.1 |
0.324 |
| 2015 |
317.1 |
0.301 |
| 2016 |
317.0 |
0.278 |
| 2017 |
316.8 |
0.254 |
| 2018 |
316.7 |
0.230 |
| 2019 |
316.5 |
0.206 |
| 2020 |
316.3 |
0.182 |
| 2021 |
316.0 |
0.157 |
| 2022 |
315.6 |
0.132 |
| 2023 |
315.0 |
0.107 |
| 2024 |
314.1 |
0.082 |
| 2025 |
312.3 |
0.056 |
| 2026 |
307.5 |
0.031 |
| 2027 |
269.3 |
0.008 |
| 2028 |
153.3 |
0.021 |
| 2029 |
145.0 |
0.047 |
| 2030 |
142.5 |
0.072 |
|
|
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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