19399-3926 GAA 16 Aa,Ab (V4090 Sgr)
19h 39m 55.53s -39° 25' 58.4" P.A. 211.00 sep 0.0 mag 6.50,7.40 Sp A1m dist. 85.54 pc (279.03 l.y.)
| Coord 2000 |
19399-3926 |
|
Discov num |
GAA 16 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
19 39 55.53 -39 25 58.4 |
|
| Date first |
2016 |
|
Date last |
2016 |
|
Obs |
6 |
|
| Pa first |
208 |
|
Pa last |
210.9 |
|
P.A. Now (θ) |
210.9° |
|
| Sep first |
0.0 |
|
Sep last |
0.002 |
|
Sep. Now (ρ) |
0.002" |
|
| Mag pri |
6.50 |
|
Mag sec |
7.40 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
A1m (white) |
|
| Pri motion ra |
+047 |
|
Sec motion ra |
|
|
| Pri motion dec |
-050 |
|
Sec motion dec |
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|
| Notes |
N
O
W
K
(See Notes, Orbital solution, , K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
V4090 Sgr |
|
Constellation |
Sagittarius |
|
SAO |
211451 |
|
HIP |
96739 |
|
| Tycho2 |
7936-00116-1 |
|
HD |
185257 |
|
HR |
7464 |
|
GC |
27182 |
|
| CD |
CD-3913371 |
|
CP |
CP-39 8493 |
|
Distance |
85.54 |
|
Distance ly |
279.03 |
|
ORBITAL ELEMENTS
| Period (P) | 11.41497d | ± 0.00002 |
Periastron (T) | 42657.8d (1975.669y) | ± 0.5 |
Semi-major axis (a) | 1.596m | ± 0.011 |
| Eccentricity (e) | 0.012 | ± 0.006 |
Inclination (i) | 87.4° | ± 0.6 |
Longitude of periastron (ω) | 57° | ± 17 |
| Node (Ω) | 29° | ± 0.3 |
Notes | n | |
Reference | GaA2019 | |
| Equinox | | |
Last observation | 2016 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
213.8 |
0.001 |
| 2001-01-01 |
213.6 |
0.001 |
| 2002-01-01 |
213.4 |
0.001 |
| 2003-01-01 |
213.2 |
0.001 |
| 2004-01-01 |
213.0 |
0.001 |
| 2005-01-01 |
212.9 |
0.001 |
| 2006-01-01 |
212.7 |
0.001 |
| 2007-01-01 |
212.5 |
0.001 |
| 2008-01-01 |
212.4 |
0.001 |
| 2009-01-01 |
212.3 |
0.001 |
| 2010-01-01 |
212.1 |
0.001 |
| 2011-01-01 |
212.0 |
0.001 |
| 2012-01-01 |
211.9 |
0.001 |
| 2013-01-01 |
211.8 |
0.001 |
| 2014-01-01 |
211.7 |
0.001 |
| 2015-01-01 |
211.6 |
0.001 |
| 2016-01-01 |
211.5 |
0.001 |
| 2017-01-01 |
211.4 |
0.001 |
| 2018-01-01 |
211.3 |
0.001 |
| 2019-01-01 |
211.2 |
0.001 |
| 2020-01-01 |
211.1 |
0.001 |
| 2021-01-01 |
211.0 |
0.001 |
| 2022-01-01 |
210.9 |
0.001 |
| 2023-01-01 |
210.9 |
0.001 |
| 2024-01-01 |
210.8 |
0.001 |
| 2025-01-01 |
210.7 |
0.001 |
| 2026-01-01 |
210.6 |
0.001 |
| 2027-01-01 |
210.6 |
0.001 |
| 2028-01-01 |
210.5 |
0.001 |
| 2029-01-01 |
210.4 |
0.001 |
| 2030-01-01 |
210.4 |
0.001 |
|
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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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