12474-2935 DAW 105 (HD 111139)
12h 47m 23.24s -29° 35' 26.0" P.A. 22.00 sep 0.0 mag 9.40,9.70 Sp F7V
| Coord 2000 |
12474-2935 |
|
Discov num |
DAW 105 |
|
Comp |
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Coord arcsec 2000 |
12 47 23.24 -29 35 26.0 |
|
| Date first |
1920 |
|
Date last |
2021 |
|
Obs |
11 |
|
| Pa first |
233 |
|
Pa last |
21.5 |
|
P.A. Now (θ) |
21.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.041 |
|
Sep. Now (ρ) |
0.041" |
|
| Mag pri |
9.40 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
+008 |
|
Sec motion ra |
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|
| Pri motion dec |
-001 |
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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 111139 |
|
Constellation |
Hydra |
|
SAO |
181100 |
|
Tycho2 |
6696-00181-1 |
|
| Gaia DR2 |
6184977142188661504 |
|
HD |
111139 |
|
ADS |
8665 |
|
ORBITAL ELEMENTS
| Period (P) | 150y | |
Periastron (T) | 2032.6y | |
Semi-major axis (a) | 0.256a | |
| Eccentricity (e) | 0.817 | |
Inclination (i) | 84.6° | |
Longitude of periastron (ω) | 233.7° | |
| Node (Ω) | 227.9° | |
Notes | | |
Reference | Tok2021f | |
| Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
247.0 |
0.099 |
| 2001 |
248.0 |
0.094 |
| 2002 |
249.0 |
0.088 |
| 2003 |
250.2 |
0.082 |
| 2004 |
251.5 |
0.077 |
| 2005 |
253.1 |
0.071 |
| 2006 |
254.9 |
0.066 |
| 2007 |
257.1 |
0.060 |
| 2008 |
259.7 |
0.054 |
| 2009 |
262.9 |
0.049 |
| 2010 |
266.9 |
0.044 |
| 2011 |
272.0 |
0.038 |
| 2012 |
278.6 |
0.034 |
| 2013 |
287.2 |
0.029 |
| 2014 |
298.4 |
0.026 |
| 2015 |
312.3 |
0.024 |
| 2016 |
327.8 |
0.023 |
| 2017 |
343.1 |
0.024 |
| 2018 |
356.3 |
0.027 |
| 2019 |
6.7 |
0.030 |
| 2020 |
14.8 |
0.035 |
| 2021 |
21.0 |
0.040 |
| 2022 |
25.9 |
0.044 |
| 2023 |
29.8 |
0.049 |
| 2024 |
33.0 |
0.054 |
| 2025 |
35.6 |
0.059 |
| 2026 |
37.9 |
0.063 |
| 2027 |
40.0 |
0.066 |
| 2028 |
41.8 |
0.069 |
| 2029 |
43.6 |
0.069 |
| 2030 |
45.5 |
0.066 |
|
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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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