16256-2327 H 2 19 AB (Rho Oph)
16h 25m 35.03s -23° 26' 47.0" P.A. 335.00 sep 3.0 mag 5.07,5.74 Sp B2IV+B2V dist. 110.74 pc (361.23 l.y.)
| Coord 2000 |
16256-2327 |
|
Discov num |
H 2 19 |
|
Comp |
AB |
|
Coord arcsec 2000 |
16 25 35.03 -23 26 47.0 |
|
| Date first |
1832 |
|
Date last |
2021 |
|
Obs |
111 |
|
| Pa first |
3 |
|
Pa last |
334.8 |
|
P.A. Now (θ) |
334.8° |
|
| Sep first |
3.8 |
|
Sep last |
3.015 |
|
Sep. Now (ρ) |
3.015" |
|
| Mag pri |
5.07 |
|
Mag sec |
5.74 |
|
delta mag (ΔM) |
0.67 |
|
Spectral class |
B2IV+B2V (blue-white/blue-white) |
|
| Pri motion ra |
-014 |
|
Sec motion ra |
-014 |
|
| Pri motion dec |
-027 |
|
Sec motion dec |
-027 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
184381 |
16 25 35 -23 26 47 |
H 2 19 AB |
2021 |
111 |
335 |
3.0 |
5.07 |
5.74 |
0.67 |
Y |
<=== |
| Show |
|
184381 |
16 25 35 -23 26 47 |
H 2 19 AC |
2021 |
16 |
0 |
151.1 |
5.07 |
7.29 |
2.22 |
|
|
| Show |
|
184381 |
16 25 35 -23 26 47 |
H 2 19 AD |
2021 |
17 |
253 |
156.1 |
5.07 |
6.81 |
1.74 |
|
|
| Show |
|
184383 |
16 25 35 -23 24 19 |
KOU 63 CF |
2016 |
2 |
207 |
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
| Name |
Rho Oph |
|
Constellation |
Ophiuchus |
|
SAO |
184381 |
|
HIP |
80473 |
|
| Tycho2 |
6794-00549-1 |
|
Gaia DR2 |
6050943410590451328 |
|
HD |
147933 |
|
HR |
6112 |
|
| GC |
22078 |
|
ADS |
10049 |
|
CD |
CD-2312861 |
|
Bayer |
Rho Ophiuchi |
|
| Bayer name |
Rho Oph |
|
Flamsteed |
5 Ophiuchi |
|
Flamsteed name |
5 Oph |
|
Distance |
110.74 |
|
| Distance ly |
361.23 |
|
Bayer greek |
ρ Oph |
|
ORBITAL ELEMENTS
| Period (P) | 4193.4346y | ± 2586.2103 |
Periastron (T) | 2332.5532y | ± 717.3906 |
Semi-major axis (a) | 12.63509a | ± 6.58339 |
| Eccentricity (e) | 0.89588 | ± 0.11915 |
Inclination (i) | 105.902° | ± 9.28 |
Longitude of periastron (ω) | 244.218° | ± 40.038 |
| Node (Ω) | 88.335° | ± 52.556 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2012 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.4 |
3.053 |
| 2001 |
337.2 |
3.050 |
| 2002 |
337.0 |
3.048 |
| 2003 |
336.8 |
3.045 |
| 2004 |
336.6 |
3.043 |
| 2005 |
336.5 |
3.040 |
| 2006 |
336.3 |
3.038 |
| 2007 |
336.1 |
3.036 |
| 2008 |
335.9 |
3.033 |
| 2009 |
335.7 |
3.031 |
| 2010 |
335.5 |
3.028 |
| 2011 |
335.4 |
3.026 |
| 2012 |
335.2 |
3.024 |
| 2013 |
335.0 |
3.022 |
| 2014 |
334.8 |
3.019 |
| 2015 |
334.6 |
3.017 |
| 2016 |
334.5 |
3.015 |
| 2017 |
334.3 |
3.013 |
| 2018 |
334.1 |
3.010 |
| 2019 |
333.9 |
3.008 |
| 2020 |
333.7 |
3.006 |
| 2021 |
333.5 |
3.004 |
| 2022 |
333.3 |
3.002 |
| 2023 |
333.2 |
3.000 |
| 2024 |
333.0 |
2.997 |
| 2025 |
332.8 |
2.995 |
| 2026 |
332.6 |
2.993 |
| 2027 |
332.4 |
2.991 |
| 2028 |
332.2 |
2.989 |
| 2029 |
332.0 |
2.987 |
| 2030 |
331.9 |
2.985 |
| 2031 |
331.7 |
2.983 |
| 2032 |
331.5 |
2.981 |
| 2033 |
331.3 |
2.979 |
| 2034 |
331.1 |
2.977 |
| 2035 |
330.9 |
2.975 |
| 2036 |
330.7 |
2.974 |
| 2037 |
330.5 |
2.972 |
| 2038 |
330.3 |
2.970 |
| 2039 |
330.2 |
2.968 |
| 2040 |
330.0 |
2.966 |
| 2041 |
329.8 |
2.964 |
| 2042 |
329.6 |
2.963 |
| 2043 |
329.4 |
2.961 |
| 2044 |
329.2 |
2.959 |
| 2045 |
329.0 |
2.957 |
| 2046 |
328.8 |
2.956 |
| 2047 |
328.6 |
2.954 |
| 2048 |
328.4 |
2.952 |
| 2049 |
328.3 |
2.951 |
| 2050 |
328.1 |
2.949 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
