19134-1427 BU 138 (HD 179518)
19h 13m 25.84s -14° 26' 49.3" P.A. 341.00 sep 1.4 mag 7.81,9.96 Sp F5V dist. 78.68 pc (256.65 l.y.)
| Coord 2000 |
19134-1427 |
|
Discov num |
BU 138 |
|
Comp |
|
|
Coord arcsec 2000 |
19 13 25.84 -14 26 49.3 |
|
| Date first |
1873 |
|
Date last |
2016 |
|
Obs |
28 |
|
| Pa first |
270 |
|
Pa last |
340.8 |
|
P.A. Now (θ) |
340.8° |
|
| Sep first |
1.0 |
|
Sep last |
1.383 |
|
Sep. Now (ρ) |
1.383" |
|
| Mag pri |
7.81 |
|
Mag sec |
9.96 |
|
delta mag (ΔM) |
2.15 |
|
Spectral class |
F5V (yellow-white) |
|
| Pri motion ra |
+039 |
|
Sec motion ra |
+039 |
|
| Pri motion dec |
-057 |
|
Sec motion dec |
-057 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 179518 |
|
Constellation |
Sagittarius |
|
SAO |
162329 |
|
HIP |
94454 |
|
| Tycho2 |
5720-00369-1 |
|
Gaia DR2 |
4185205008718146048 |
|
HD |
179518 |
|
ADS |
12168 |
|
| BD |
BD-14 5333 |
|
Distance |
78.68 |
|
Distance ly |
256.65 |
|
ORBITAL ELEMENTS
| Period (P) | 2105.1296y | ± 993.2275 |
Periastron (T) | 1741.4567y | ± 323.6033 |
Semi-major axis (a) | 6.00746a | ± 4.01206 |
| Eccentricity (e) | 0.8615 | ± 0.11506 |
Inclination (i) | 77.685° | ± 6.595 |
Longitude of periastron (ω) | 120.766° | ± 44.959 |
| Node (Ω) | 55.543° | ± 51.608 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 1991 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
334.7 |
1.365 |
| 2001 |
335.1 |
1.370 |
| 2002 |
335.4 |
1.374 |
| 2003 |
335.8 |
1.379 |
| 2004 |
336.1 |
1.383 |
| 2005 |
336.5 |
1.388 |
| 2006 |
336.8 |
1.393 |
| 2007 |
337.2 |
1.397 |
| 2008 |
337.5 |
1.402 |
| 2009 |
337.9 |
1.407 |
| 2010 |
338.2 |
1.412 |
| 2011 |
338.5 |
1.417 |
| 2012 |
338.9 |
1.422 |
| 2013 |
339.2 |
1.427 |
| 2014 |
339.5 |
1.432 |
| 2015 |
339.8 |
1.437 |
| 2016 |
340.2 |
1.442 |
| 2017 |
340.5 |
1.447 |
| 2018 |
340.8 |
1.452 |
| 2019 |
341.1 |
1.457 |
| 2020 |
341.4 |
1.463 |
| 2021 |
341.7 |
1.468 |
| 2022 |
342.1 |
1.473 |
| 2023 |
342.4 |
1.479 |
| 2024 |
342.7 |
1.484 |
| 2025 |
343.0 |
1.489 |
| 2026 |
343.3 |
1.495 |
| 2027 |
343.6 |
1.500 |
| 2028 |
343.9 |
1.506 |
| 2029 |
344.2 |
1.511 |
| 2030 |
344.4 |
1.517 |
| 2031 |
344.7 |
1.522 |
| 2032 |
345.0 |
1.528 |
| 2033 |
345.3 |
1.534 |
| 2034 |
345.6 |
1.539 |
| 2035 |
345.9 |
1.545 |
| 2036 |
346.2 |
1.551 |
| 2037 |
346.4 |
1.556 |
| 2038 |
346.7 |
1.562 |
| 2039 |
347.0 |
1.568 |
| 2040 |
347.2 |
1.574 |
| 2041 |
347.5 |
1.580 |
| 2042 |
347.8 |
1.586 |
| 2043 |
348.1 |
1.591 |
| 2044 |
348.3 |
1.597 |
| 2045 |
348.6 |
1.603 |
| 2046 |
348.8 |
1.609 |
| 2047 |
349.1 |
1.615 |
| 2048 |
349.3 |
1.621 |
| 2049 |
349.6 |
1.627 |
| 2050 |
349.9 |
1.633 |
|
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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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