19027-0043 STF 2434 BC
19h 02m 46.15s -00° 42' 41.9" P.A. 257.00 sep 0.8 mag 9.68,9.38 Sp G5 dist. 66.89 pc (218.2 l.y.)
| Coord 2000 |
19027-0043 |
|
Discov num |
STF2434 |
|
Comp |
BC |
|
Coord arcsec 2000 |
19 02 46.15 -00 42 41.9 |
|
| Date first |
1831 |
|
Date last |
2021 |
|
Obs |
97 |
|
| Pa first |
81 |
|
Pa last |
256.9 |
|
P.A. Now (θ) |
256.9° |
|
| Sep first |
1.9 |
|
Sep last |
0.772 |
|
Sep. Now (ρ) |
0.772" |
|
| Mag pri |
9.68 |
|
Mag sec |
9.38 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+037 |
|
Sec motion ra |
+037 |
|
| Pri motion dec |
-009 |
|
Sec motion dec |
-009 |
|
| Notes |
O
W
(Orbital solution, ) |
|
This double is physical.
19027-0043 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 176982 |
142955 |
19 02 44 -00 42 40 |
STF 2434 A,BC |
2019 |
138 |
88 |
27.8 |
8.44 |
8.93 |
0.49 |
|
|
| Show |
|
142957 |
19 02 46 -00 42 42 |
STF 2434 BC |
2021 |
97 |
257 |
0.8 |
9.68 |
9.38 |
0.30 |
Y |
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquila |
|
SAO |
142957 |
|
HIP |
93519 |
|
Tycho2 |
5128-00267-1 |
|
| HD |
176983 |
|
GC |
26189 |
|
ADS |
11971 |
|
BD |
BD-00 3632 |
|
| Distance |
66.89 |
|
Distance ly |
218.2 |
|
ORBITAL ELEMENTS
| Period (P) | 975y | ± 216 |
Periastron (T) | 1993.5y | ± 2.4 |
Semi-major axis (a) | 1.82a | ± 0.23 |
| Eccentricity (e) | 0.612 | ± 0.053 |
Inclination (i) | 149° | ± 2.6 |
Longitude of periastron (ω) | 97° | ± 12 |
| Node (Ω) | 49° | ± 8 |
Notes | | |
Reference | Mdz2017 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
296.5 |
0.623 |
| 2001 |
294.4 |
0.627 |
| 2002 |
292.3 |
0.632 |
| 2003 |
290.2 |
0.637 |
| 2004 |
288.2 |
0.642 |
| 2005 |
286.2 |
0.648 |
| 2006 |
284.3 |
0.654 |
| 2007 |
282.3 |
0.661 |
| 2008 |
280.5 |
0.667 |
| 2009 |
278.6 |
0.674 |
| 2010 |
276.8 |
0.682 |
| 2011 |
275.1 |
0.689 |
| 2012 |
273.3 |
0.697 |
| 2013 |
271.6 |
0.705 |
| 2014 |
270.0 |
0.713 |
| 2015 |
268.4 |
0.722 |
| 2016 |
266.8 |
0.730 |
| 2017 |
265.3 |
0.739 |
| 2018 |
263.8 |
0.748 |
| 2019 |
262.3 |
0.757 |
| 2020 |
260.9 |
0.766 |
| 2021 |
259.5 |
0.775 |
| 2022 |
258.1 |
0.784 |
| 2023 |
256.8 |
0.793 |
| 2024 |
255.5 |
0.803 |
| 2025 |
254.2 |
0.812 |
| 2026 |
253.0 |
0.822 |
| 2027 |
251.8 |
0.831 |
| 2028 |
250.6 |
0.841 |
| 2029 |
249.4 |
0.850 |
| 2030 |
248.3 |
0.860 |
|
|
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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