19121+0254 AST 1
19h 12m 14.68s +02° 53' 10.7" P.A. 5.00 sep 0.2 mag 11.29,13.11 Sp M3.5V dist. 10.22 pc (33.34 l.y.)
Coord 2000 |
19121+0254 |
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Discov num |
AST 1 |
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Comp |
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Coord arcsec 2000 |
19 12 14.68 +02 53 10.7 |
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Date first |
1982 |
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Date last |
2021 |
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Obs |
71 |
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Pa first |
224 |
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Pa last |
5.3 |
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P.A. Now (θ) |
5.3° |
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Sep first |
0.2 |
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Sep last |
0.181 |
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Sep. Now (ρ) |
0.181" |
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Mag pri |
11.29 |
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Mag sec |
13.11 |
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delta mag (ΔM) |
1.82 |
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Spectral class |
M3.5V (red) |
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Pri motion ra |
+179 |
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Sec motion ra |
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Pri motion dec |
-052 |
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Sec motion dec |
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Notes |
N
O
P
(See Notes, Orbital solution, 100-year proper motion) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Aquila |
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HIP |
94349 |
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Gaia DR2 |
4268226078065248768 |
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GL |
Gl 748 |
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Distance |
10.22 |
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Distance ly |
33.34 |
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ORBITAL ELEMENTS
Period (P) | 901.7d (2.47y) | ± 0.3 |
Periastron (T) | 50033.2d (1995.862y) | ± 0.8 |
Semi-major axis (a) | 0.148a | ± 0.0004 |
Eccentricity (e) | 0.45 | ± 0.002 |
Inclination (i) | 131.6° | ± 0.3 |
Longitude of periastron (ω) | 27.3° | ± 0.4 |
Node (Ω) | 359.6° | ± 0.2 |
Notes | n | |
Reference | AST2016 | |
Equinox | 2000 | |
Last observation | | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
135.0 |
0.153 |
2001-01-01 |
255.1 |
0.070 |
2002-01-01 |
162.3 |
0.203 |
2003-01-01 |
49.9 |
0.088 |
2004-01-01 |
184.0 |
0.188 |
2005-01-01 |
129.6 |
0.143 |
2006-01-01 |
235.0 |
0.085 |
2007-01-01 |
159.3 |
0.200 |
2008-01-01 |
34.6 |
0.088 |
2009-01-01 |
180.8 |
0.194 |
2010-01-01 |
123.4 |
0.133 |
2011-01-01 |
221.3 |
0.102 |
2012-01-01 |
156.3 |
0.195 |
2013-01-01 |
19.4 |
0.088 |
2014-01-01 |
177.8 |
0.200 |
2015-01-01 |
116.1 |
0.123 |
2016-01-01 |
211.6 |
0.119 |
2017-01-01 |
153.1 |
0.190 |
2018-01-01 |
3.8 |
0.086 |
2019-01-01 |
174.9 |
0.203 |
2020-01-01 |
107.6 |
0.113 |
2021-01-01 |
204.3 |
0.135 |
2022-01-01 |
149.7 |
0.183 |
2023-01-01 |
346.5 |
0.079 |
2024-01-01 |
172.0 |
0.206 |
2025-01-01 |
97.5 |
0.104 |
2026-01-01 |
198.5 |
0.150 |
2027-01-01 |
146.0 |
0.175 |
2028-01-01 |
325.1 |
0.070 |
2029-01-01 |
169.3 |
0.207 |
2030-01-01 |
85.7 |
0.097 |
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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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