15277+0606 STF 1944 (HD 137761)
15h 27m 42.14s +06° 06' 04.5" P.A. 293.00 sep 0.7 mag 8.32,8.79 Sp F8 dist. 196.08 pc (639.61 l.y.)
Coord 2000 |
15277+0606 |
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Discov num |
STF1944 |
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Comp |
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Coord arcsec 2000 |
15 27 42.14 +06 06 04.5 |
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Date first |
1832 |
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Date last |
2019 |
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Obs |
134 |
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Pa first |
342 |
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Pa last |
292.8 |
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P.A. Now (θ) |
292.8° |
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Sep first |
1.3 |
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Sep last |
0.68 |
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Sep. Now (ρ) |
0.68" |
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Mag pri |
8.32 |
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Mag sec |
8.79 |
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delta mag (ΔM) |
0.47 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-002 |
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Sec motion ra |
-002 |
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Pri motion dec |
-036 |
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Sec motion dec |
-036 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 137761 |
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Constellation |
Serpens |
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SAO |
121013 |
|
HIP |
75682 |
|
Tycho2 |
0349-00765-1 |
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Gaia DR2 |
1162496434113614848 |
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HD |
137761 |
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GC |
20777 |
|
ADS |
9647 |
|
BD |
BD+06 3048 |
|
Distance |
196.08 |
|
Distance ly |
639.61 |
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ORBITAL ELEMENTS
Period (P) | 1030y | |
Periastron (T) | 2089.3y | |
Semi-major axis (a) | 1.131a | |
Eccentricity (e) | 0.5 | |
Inclination (i) | 126.6° | |
Longitude of periastron (ω) | 294.8° | |
Node (Ω) | 142.6° | |
Notes | | |
Reference | Zir2015a | |
Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
302.7 |
0.730 |
2001 |
302.3 |
0.724 |
2002 |
301.8 |
0.717 |
2003 |
301.4 |
0.711 |
2004 |
300.9 |
0.705 |
2005 |
300.4 |
0.698 |
2006 |
300.0 |
0.692 |
2007 |
299.5 |
0.685 |
2008 |
299.0 |
0.679 |
2009 |
298.5 |
0.672 |
2010 |
297.9 |
0.666 |
2011 |
297.4 |
0.659 |
2012 |
296.9 |
0.653 |
2013 |
296.3 |
0.646 |
2014 |
295.8 |
0.640 |
2015 |
295.2 |
0.633 |
2016 |
294.6 |
0.626 |
2017 |
294.0 |
0.620 |
2018 |
293.4 |
0.613 |
2019 |
292.8 |
0.606 |
2020 |
292.2 |
0.599 |
2021 |
291.5 |
0.593 |
2022 |
290.9 |
0.586 |
2023 |
290.2 |
0.579 |
2024 |
289.5 |
0.572 |
2025 |
288.8 |
0.566 |
2026 |
288.0 |
0.559 |
2027 |
287.3 |
0.552 |
2028 |
286.5 |
0.545 |
2029 |
285.7 |
0.539 |
2030 |
284.9 |
0.532 |
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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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