16256-2327 BU 1115 DE
16h 25m 24.29s -23° 27' 36.6" P.A. 196.00 sep 0.3 mag 6.81,8.42 Sp B5V dist. 124.84 pc (407.23 l.y.)
| Coord 2000 |
16256-2327 |
|
Discov num |
BU 1115 |
|
Comp |
DE |
|
Coord arcsec 2000 |
16 25 24.29 -23 27 36.6 |
|
| Date first |
1889 |
|
Date last |
2018 |
|
Obs |
21 |
|
| Pa first |
26 |
|
Pa last |
195.6 |
|
P.A. Now (θ) |
195.6° |
|
| Sep first |
0.9 |
|
Sep last |
0.252 |
|
Sep. Now (ρ) |
0.252" |
|
| Mag pri |
6.81 |
|
Mag sec |
8.42 |
|
delta mag (ΔM) |
1.61 |
|
Spectral class |
B5V (blue-white) |
|
| Pri motion ra |
+001 |
|
Sec motion ra |
|
|
| Pri motion dec |
-019 |
|
Sec motion dec |
|
|
| Notes |
N
O
V
(See Notes, Orbital solution, Proper motion indicates physical) |
|
This double is physical.
16256-2327 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Rho Oph |
184382 |
16 25 35 -23 26 47 |
H 2 19 AB |
2021 |
111 |
335 |
3.0 |
5.07 |
5.74 |
0.67 |
Y |
|
| Show |
|
184382 |
16 25 35 -23 26 47 |
H 2 19 AC |
2021 |
16 |
0 |
151.1 |
5.07 |
7.29 |
2.22 |
|
|
| Show |
|
184382 |
16 25 35 -23 26 47 |
H 2 19 AD |
2021 |
17 |
253 |
156.1 |
5.07 |
6.81 |
1.74 |
|
|
| Show |
|
|
16 25 35 -23 24 19 |
KOU 63 CF |
2000 |
1 |
206 |
4.8 |
5.80 |
11.70 |
5.90 |
|
|
| Show |
|
184377 |
16 25 24 -23 27 37 |
BU 1115 DE |
2018 |
21 |
196 |
0.3 |
6.81 |
8.42 |
1.61 |
Y |
<=== |
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
SAO |
184377 |
|
HIP |
80461 |
|
Tycho2 |
6794-00550-1 |
|
| Gaia DR2 |
6050944063425483520 |
|
HD |
147888 |
|
GC |
22070 |
|
ADS |
10045 |
|
| CD |
CD-2312860 |
|
CP |
CP-23 6368 |
|
Distance |
124.84 |
|
Distance ly |
407.23 |
|
ORBITAL ELEMENTS
| Period (P) | 675.5y | ± 32.5 |
Periastron (T) | 2008.6y | ± 34.2 |
Semi-major axis (a) | 1.01a | ± 0.15 |
| Eccentricity (e) | 0.707 | ± 0.112 |
Inclination (i) | 134.8° | ± 2.7 |
Longitude of periastron (ω) | 260.4° | ± 1.1 |
| Node (Ω) | 152.7° | ± 4.6 |
Notes | n | |
Reference | Nov2007b | |
| Equinox | 2000 | |
Last observation | 1991 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
297.8 |
0.278 |
| 2001 |
294.2 |
0.268 |
| 2002 |
290.3 |
0.257 |
| 2003 |
286.0 |
0.248 |
| 2004 |
281.4 |
0.239 |
| 2005 |
276.5 |
0.230 |
| 2006 |
271.2 |
0.223 |
| 2007 |
265.6 |
0.218 |
| 2008 |
259.8 |
0.213 |
| 2009 |
253.8 |
0.211 |
| 2010 |
247.6 |
0.209 |
| 2011 |
241.4 |
0.210 |
| 2012 |
235.4 |
0.212 |
| 2013 |
229.4 |
0.216 |
| 2014 |
223.8 |
0.222 |
| 2015 |
218.4 |
0.228 |
| 2016 |
213.4 |
0.236 |
| 2017 |
208.7 |
0.245 |
| 2018 |
204.4 |
0.255 |
| 2019 |
200.4 |
0.266 |
| 2020 |
196.8 |
0.277 |
| 2021 |
193.4 |
0.288 |
| 2022 |
190.2 |
0.300 |
| 2023 |
187.3 |
0.312 |
| 2024 |
184.7 |
0.324 |
| 2025 |
182.2 |
0.337 |
| 2026 |
179.9 |
0.349 |
| 2027 |
177.7 |
0.361 |
| 2028 |
175.7 |
0.373 |
| 2029 |
173.8 |
0.385 |
| 2030 |
172.1 |
0.397 |
|
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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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