09522+0807 A 2762 (HD 85474)
09h 52m 11.82s +08° 06' 45.2" P.A. 244.00 sep 0.4 mag 8.85,11.90 Sp G5 dist. 60.02 pc (195.79 l.y.)
Coord 2000 |
09522+0807 |
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Discov num |
A 2762 |
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Comp |
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Coord arcsec 2000 |
09 52 11.82 +08 06 45.2 |
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Date first |
1914 |
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Date last |
2018 |
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Obs |
13 |
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Pa first |
293 |
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Pa last |
244 |
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P.A. Now (θ) |
244° |
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Sep first |
1.6 |
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Sep last |
0.399 |
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Sep. Now (ρ) |
0.399" |
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Mag pri |
8.85 |
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Mag sec |
11.90 |
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delta mag (ΔM) |
3.05 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
-054 |
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Sec motion ra |
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Pri motion dec |
-077 |
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Sec motion dec |
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Notes |
C
(Has orbit and linear solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 85474 |
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Constellation |
Leo |
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SAO |
117957 |
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HIP |
48412 |
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Tycho2 |
0828-01883-1 |
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Gaia DR2 |
3877904359283357440 |
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HD |
85474 |
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BD |
BD+08 2281 |
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Distance |
60.02 |
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Distance ly |
195.79 |
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ORBITAL ELEMENTS
Period (P) | 640y | |
Periastron (T) | 2092.6y | |
Semi-major axis (a) | 1.603a | |
Eccentricity (e) | 0.6 | |
Inclination (i) | 105.8° | |
Longitude of periastron (ω) | 17.3° | |
Node (Ω) | 131.1° | |
Notes | | |
Reference | Tok2019c | |
Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
268.8 |
0.597 |
2001 |
267.8 |
0.585 |
2002 |
266.9 |
0.573 |
2003 |
265.9 |
0.561 |
2004 |
264.9 |
0.549 |
2005 |
263.8 |
0.537 |
2006 |
262.7 |
0.525 |
2007 |
261.6 |
0.513 |
2008 |
260.3 |
0.502 |
2009 |
259.0 |
0.490 |
2010 |
257.7 |
0.479 |
2011 |
256.3 |
0.468 |
2012 |
254.8 |
0.458 |
2013 |
253.3 |
0.447 |
2014 |
251.7 |
0.437 |
2015 |
250.0 |
0.427 |
2016 |
248.2 |
0.418 |
2017 |
246.4 |
0.409 |
2018 |
244.5 |
0.400 |
2019 |
242.5 |
0.391 |
2020 |
240.4 |
0.384 |
2021 |
238.2 |
0.376 |
2022 |
235.9 |
0.369 |
2023 |
233.6 |
0.363 |
2024 |
231.1 |
0.357 |
2025 |
228.6 |
0.351 |
2026 |
226.0 |
0.347 |
2027 |
223.4 |
0.343 |
2028 |
220.7 |
0.340 |
2029 |
217.9 |
0.337 |
2030 |
215.1 |
0.335 |
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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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