16568-2309 BU 1117 (24 Oph)
16h 56m 48.01s -23° 09' 01.0" P.A. 304.00 sep 1.0 mag 6.25,6.32 Sp A0V dist. 93.11 pc (303.72 l.y.)
Coord 2000 |
16568-2309 |
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Discov num |
BU 1117 |
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Comp |
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Coord arcsec 2000 |
16 56 48.01 -23 09 01.0 |
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Date first |
1887 |
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Date last |
2015 |
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Obs |
58 |
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Pa first |
251 |
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Pa last |
303.7 |
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P.A. Now (θ) |
303.7° |
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Sep first |
0.4 |
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Sep last |
1.019 |
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Sep. Now (ρ) |
1.019" |
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Mag pri |
6.25 |
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Mag sec |
6.32 |
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delta mag (ΔM) |
0.07 |
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Spectral class |
A0V (white) |
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Pri motion ra |
-011 |
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Sec motion ra |
-011 |
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Pri motion dec |
-003 |
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Sec motion dec |
-003 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
24 Oph |
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Constellation |
Ophiuchus |
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SAO |
184822 |
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HIP |
82925 |
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Tycho2 |
6810-00610-1 |
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Gaia DR2 |
4125503249615712640 |
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HD |
152849 |
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HR |
6291 |
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GC |
22824 |
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ADS |
10265 |
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BD |
BD-22 4249 |
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CD |
CD-2211734 |
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CP |
CP-22 6278 |
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Flamsteed |
24 Ophiuchi |
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Flamsteed name |
24 Oph |
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Distance |
93.11 |
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Distance ly |
303.72 |
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ORBITAL ELEMENTS
Period (P) | 1096.5033y | ± 538.5025 |
Periastron (T) | 2080.2734y | ± 86.0438 |
Semi-major axis (a) | 2.72274a | ± 1.53554 |
Eccentricity (e) | 0.81785 | ± 0.16291 |
Inclination (i) | 82.822° | ± 9.182 |
Longitude of periastron (ω) | 251.543° | ± 24.717 |
Node (Ω) | 133.751° | ± 6.147 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
301.4 |
1.007 |
2001 |
301.6 |
1.009 |
2002 |
301.8 |
1.010 |
2003 |
301.9 |
1.012 |
2004 |
302.1 |
1.014 |
2005 |
302.3 |
1.015 |
2006 |
302.5 |
1.017 |
2007 |
302.6 |
1.018 |
2008 |
302.8 |
1.019 |
2009 |
303.0 |
1.020 |
2010 |
303.1 |
1.021 |
2011 |
303.3 |
1.022 |
2012 |
303.5 |
1.023 |
2013 |
303.6 |
1.024 |
2014 |
303.8 |
1.024 |
2015 |
304.0 |
1.025 |
2016 |
304.1 |
1.025 |
2017 |
304.3 |
1.026 |
2018 |
304.5 |
1.026 |
2019 |
304.6 |
1.026 |
2020 |
304.8 |
1.025 |
2021 |
305.0 |
1.025 |
2022 |
305.1 |
1.025 |
2023 |
305.3 |
1.024 |
2024 |
305.5 |
1.023 |
2025 |
305.6 |
1.022 |
2026 |
305.8 |
1.021 |
2027 |
306.0 |
1.020 |
2028 |
306.1 |
1.018 |
2029 |
306.3 |
1.016 |
2030 |
306.5 |
1.014 |
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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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