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 |
|
Discov num |
A 2074 |
|
Comp |
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Coord arcsec 2000 |
15 27 20.82 +17 38 06.3 |
|
| Date first |
1909 |
|
Date last |
2014 |
|
Obs |
71 |
|
| Pa first |
275 |
|
Pa last |
266.5 |
|
P.A. Now (θ) |
266.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.342 |
|
Sep. Now (ρ) |
0.342" |
|
| Mag pri |
8.55 |
|
Mag sec |
9.37 |
|
delta mag (ΔM) |
0.82 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
-088 |
|
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 |
|
Constellation |
Serpens |
|
SAO |
101563 |
|
HIP |
75653 |
|
| Tycho2 |
1490-00912-1 |
|
Gaia DR2 |
1208036006713927936 |
|
HD |
137792 |
|
ADS |
9645 |
|
| BD |
BD+18 3024 |
|
Distance |
90.74 |
|
Distance ly |
295.99 |
|
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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