13091+2127 HU 572 (HD 114255)
13h 09m 08.52s +21° 27' 22.0" P.A. 329.00 sep 0.6 mag 8.73,10.08 Sp G5 dist. 78.43 pc (255.84 l.y.)
| Coord 2000 |
13091+2127 |
|
Discov num |
HU 572 |
|
Comp |
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Coord arcsec 2000 |
13 09 08.52 +21 27 22.0 |
|
| Date first |
1902 |
|
Date last |
2020 |
|
Obs |
69 |
|
| Pa first |
349 |
|
Pa last |
329.4 |
|
P.A. Now (θ) |
324.7° |
|
| Sep first |
0.4 |
|
Sep last |
0.554 |
|
Sep. Now (ρ) |
0.567" |
|
| Mag pri |
8.73 |
|
Mag sec |
10.08 |
|
delta mag (ΔM) |
1.35 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-022 |
|
Sec motion ra |
|
|
| Pri motion dec |
-014 |
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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 114255 |
|
Constellation |
Coma Berenices |
|
SAO |
82677 |
|
HIP |
64175 |
|
| Tycho2 |
1456-00108-1 |
|
Gaia DR2 |
3943386019089318272 |
|
HD |
114255 |
|
ADS |
8799 |
|
| BD |
BD+22 2545 |
|
Distance |
78.43 |
|
Distance ly |
255.84 |
|
ORBITAL ELEMENTS
| Period (P) | 102.9y | |
Periastron (T) | 1986.22y | |
Semi-major axis (a) | 0.4a | |
| Eccentricity (e) | 0.516 | |
Inclination (i) | 145° | |
Longitude of periastron (ω) | 30.9° | |
| Node (Ω) | 153.7° | |
Notes | | |
Reference | FMR2012b | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
8.1 |
0.329 |
| 2001 |
4.6 |
0.346 |
| 2002 |
1.5 |
0.362 |
| 2003 |
358.6 |
0.378 |
| 2004 |
356.0 |
0.393 |
| 2005 |
353.5 |
0.407 |
| 2006 |
351.2 |
0.421 |
| 2007 |
349.1 |
0.434 |
| 2008 |
347.0 |
0.447 |
| 2009 |
345.1 |
0.459 |
| 2010 |
343.3 |
0.470 |
| 2011 |
341.6 |
0.481 |
| 2012 |
339.9 |
0.491 |
| 2013 |
338.3 |
0.501 |
| 2014 |
336.8 |
0.510 |
| 2015 |
335.3 |
0.518 |
| 2016 |
333.8 |
0.526 |
| 2017 |
332.4 |
0.533 |
| 2018 |
331.1 |
0.540 |
| 2019 |
329.7 |
0.546 |
| 2020 |
328.4 |
0.552 |
| 2021 |
327.2 |
0.557 |
| 2022 |
325.9 |
0.562 |
| 2023 |
324.7 |
0.567 |
| 2024 |
323.5 |
0.570 |
| 2025 |
322.3 |
0.574 |
| 2026 |
321.1 |
0.577 |
| 2027 |
319.9 |
0.579 |
| 2028 |
318.7 |
0.581 |
| 2029 |
317.6 |
0.583 |
| 2030 |
316.4 |
0.584 |
|
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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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