15273+1738 A 2074 (HD 137792)
15h 27m 20.82s +17° 38' 06.3" P.A. 267.00 sep 0.3 mag 8.55,9.37 Sp F8 dist. 90.74 pc (295.99 l.y.)
Coord 2000 |
15273+1738 |
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Discov num |
A 2074 |
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Comp |
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Coord arcsec 2000 |
15 27 20.82 +17 38 06.3 |
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Date first |
1909 |
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Date last |
2014 |
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Obs |
71 |
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Pa first |
275 |
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Pa last |
266.5 |
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P.A. Now (θ) |
266.5° |
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Sep first |
0.3 |
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Sep last |
0.342 |
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Sep. Now (ρ) |
0.342" |
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Mag pri |
8.55 |
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Mag sec |
9.37 |
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delta mag (ΔM) |
0.82 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
-088 |
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Sec motion ra |
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Pri motion dec |
+039 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 137792 |
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Constellation |
Serpens |
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SAO |
101563 |
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HIP |
75653 |
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Tycho2 |
1490-00912-1 |
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Gaia DR2 |
1208036006713927936 |
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HD |
137792 |
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ADS |
9645 |
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BD |
BD+18 3024 |
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Distance |
90.74 |
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Distance ly |
295.99 |
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ORBITAL ELEMENTS
Period (P) | 59y | |
Periastron (T) | 1981.9y | |
Semi-major axis (a) | 0.206a | |
Eccentricity (e) | 0.9 | |
Inclination (i) | 59.9° | |
Longitude of periastron (ω) | 305.2° | |
Node (Ω) | 117.9° | |
Notes | n | |
Reference | Baz1976 | |
Equinox | | |
Last observation | 1973 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
252.3 |
0.222 |
2001 |
253.5 |
0.229 |
2002 |
254.5 |
0.235 |
2003 |
255.5 |
0.242 |
2004 |
256.5 |
0.247 |
2005 |
257.4 |
0.252 |
2006 |
258.2 |
0.257 |
2007 |
259.1 |
0.262 |
2008 |
259.9 |
0.266 |
2009 |
260.7 |
0.270 |
2010 |
261.4 |
0.273 |
2011 |
262.2 |
0.276 |
2012 |
262.9 |
0.278 |
2013 |
263.7 |
0.280 |
2014 |
264.4 |
0.282 |
2015 |
265.1 |
0.283 |
2016 |
265.8 |
0.284 |
2017 |
266.5 |
0.284 |
2018 |
267.2 |
0.284 |
2019 |
267.9 |
0.283 |
2020 |
268.6 |
0.282 |
2021 |
269.3 |
0.281 |
2022 |
270.0 |
0.279 |
2023 |
270.8 |
0.276 |
2024 |
271.5 |
0.272 |
2025 |
272.3 |
0.269 |
2026 |
273.1 |
0.264 |
2027 |
273.9 |
0.259 |
2028 |
274.8 |
0.253 |
2029 |
275.7 |
0.246 |
2030 |
276.7 |
0.238 |
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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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