00118+2825 BU 255 (HD 744)
00h 11m 50.13s +28° 25' 24.0" P.A. 66.00 sep 0.5 mag 7.88,8.97 Sp F5 dist. 80.52 pc (262.66 l.y.)
| Coord 2000 |
00118+2825 |
|
Discov num |
BU 255 |
|
Comp |
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|
Coord arcsec 2000 |
00 11 50.13 +28 25 24.0 |
|
| Date first |
1875 |
|
Date last |
2017 |
|
Obs |
79 |
|
| Pa first |
99 |
|
Pa last |
66 |
|
P.A. Now (θ) |
66° |
|
| Sep first |
0.4 |
|
Sep last |
0.47 |
|
Sep. Now (ρ) |
0.47" |
|
| Mag pri |
7.88 |
|
Mag sec |
8.97 |
|
delta mag (ΔM) |
1.09 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-096 |
|
Sec motion ra |
-096 |
|
| Pri motion dec |
+036 |
|
Sec motion dec |
+036 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 744 |
|
Constellation |
Andromeda |
|
SAO |
73801 |
|
HIP |
956 |
|
| Tycho2 |
1736-01574-1 |
|
Gaia DR2 |
2859908706820354176 |
|
HD |
744 |
|
ADS |
147 |
|
| BD |
BD+27 12 |
|
Distance |
80.52 |
|
Distance ly |
262.66 |
|
ORBITAL ELEMENTS
| Period (P) | 245y | |
Periastron (T) | 2067.2y | |
Semi-major axis (a) | 0.661a | |
| Eccentricity (e) | 0.96 | |
Inclination (i) | 116° | |
Longitude of periastron (ω) | 265.4° | |
| Node (Ω) | 166.1° | |
Notes | | |
Reference | Zir2015a | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
71.7 |
0.493 |
| 2001 |
71.4 |
0.490 |
| 2002 |
71.1 |
0.487 |
| 2003 |
70.8 |
0.484 |
| 2004 |
70.4 |
0.482 |
| 2005 |
70.1 |
0.479 |
| 2006 |
69.7 |
0.476 |
| 2007 |
69.4 |
0.473 |
| 2008 |
69.0 |
0.469 |
| 2009 |
68.7 |
0.466 |
| 2010 |
68.3 |
0.463 |
| 2011 |
67.9 |
0.460 |
| 2012 |
67.5 |
0.456 |
| 2013 |
67.2 |
0.453 |
| 2014 |
66.8 |
0.450 |
| 2015 |
66.4 |
0.446 |
| 2016 |
66.0 |
0.442 |
| 2017 |
65.6 |
0.439 |
| 2018 |
65.2 |
0.435 |
| 2019 |
64.7 |
0.431 |
| 2020 |
64.3 |
0.427 |
| 2021 |
63.9 |
0.423 |
| 2022 |
63.4 |
0.419 |
| 2023 |
63.0 |
0.415 |
| 2024 |
62.5 |
0.411 |
| 2025 |
62.1 |
0.407 |
| 2026 |
61.6 |
0.403 |
| 2027 |
61.1 |
0.398 |
| 2028 |
60.6 |
0.394 |
| 2029 |
60.1 |
0.389 |
| 2030 |
59.5 |
0.385 |
|
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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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