14400-5300 B 1252 (HD 128636)
14h 39m 57.30s -53° 00' 05.2" P.A. 282.00 sep 0.2 mag 8.63,10.08 Sp F5 dist. 78.12 pc (254.83 l.y.)
| Coord 2000 |
14400-5300 |
|
Discov num |
B 1252 |
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Comp |
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Coord arcsec 2000 |
14 39 57.30 -53 00 05.2 |
|
| Date first |
1931 |
|
Date last |
2021 |
|
Obs |
10 |
|
| Pa first |
327 |
|
Pa last |
281.7 |
|
P.A. Now (θ) |
286.4° |
|
| Sep first |
0.2 |
|
Sep last |
0.175 |
|
Sep. Now (ρ) |
0.218" |
|
| Mag pri |
8.63 |
|
Mag sec |
10.08 |
|
delta mag (ΔM) |
1.45 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
+055 |
|
Sec motion ra |
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| Pri motion dec |
+013 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 128636 |
|
Constellation |
Lupus |
|
SAO |
241889 |
|
HIP |
71693 |
|
| Tycho2 |
8679-00236-1 |
|
Gaia DR2 |
5895005895563303936 |
|
HD |
128636 |
|
CP |
CP-52 7393 |
|
| Distance |
78.12 |
|
Distance ly |
254.83 |
|
ORBITAL ELEMENTS
| Period (P) | 67y | |
Periastron (T) | 2012.08y | |
Semi-major axis (a) | 0.268a | |
| Eccentricity (e) | 0.59 | |
Inclination (i) | 67.2° | |
Longitude of periastron (ω) | 10.5° | |
| Node (Ω) | 125.3° | |
Notes | | |
Reference | Tok2019d | |
| Equinox | 2000 | |
Last observation | 2019 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.0 |
0.182 |
| 2001 |
341.1 |
0.162 |
| 2002 |
346.4 |
0.141 |
| 2003 |
353.4 |
0.121 |
| 2004 |
3.1 |
0.102 |
| 2005 |
16.9 |
0.086 |
| 2006 |
35.6 |
0.076 |
| 2007 |
57.8 |
0.073 |
| 2008 |
78.8 |
0.080 |
| 2009 |
95.5 |
0.091 |
| 2010 |
108.2 |
0.103 |
| 2011 |
118.7 |
0.111 |
| 2012 |
128.6 |
0.109 |
| 2013 |
139.8 |
0.097 |
| 2014 |
155.3 |
0.080 |
| 2015 |
179.5 |
0.064 |
| 2016 |
212.3 |
0.061 |
| 2017 |
240.4 |
0.073 |
| 2018 |
257.8 |
0.095 |
| 2019 |
268.3 |
0.121 |
| 2020 |
275.2 |
0.146 |
| 2021 |
280.0 |
0.171 |
| 2022 |
283.6 |
0.195 |
| 2023 |
286.4 |
0.218 |
| 2024 |
288.8 |
0.239 |
| 2025 |
290.7 |
0.259 |
| 2026 |
292.4 |
0.278 |
| 2027 |
293.9 |
0.295 |
| 2028 |
295.2 |
0.311 |
| 2029 |
296.4 |
0.326 |
| 2030 |
297.5 |
0.339 |
|
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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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