20289-1749 SHJ 323 AB (Rho Cap)
20h 28m 51.62s -17° 48' 49.2" P.A. 189.00 sep 1.7 mag 4.97,6.88 Sp F3V dist. 30.27 pc (98.74 l.y.)
| Coord 2000 |
20289-1749 |
|
Discov num |
SHJ 323 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 28 51.62 -17 48 49.2 |
|
| Date first |
1823 |
|
Date last |
2021 |
|
Obs |
80 |
|
| Pa first |
177 |
|
Pa last |
189.2 |
|
P.A. Now (θ) |
188.9° |
|
| Sep first |
4.0 |
|
Sep last |
1.75 |
|
Sep. Now (ρ) |
1.684" |
|
| Mag pri |
4.97 |
|
Mag sec |
6.88 |
|
delta mag (ΔM) |
1.91 |
|
Spectral class |
F3V (yellow-white) |
|
| Pri motion ra |
-003 |
|
Sec motion ra |
-003 |
|
| Pri motion dec |
-017 |
|
Sec motion dec |
-017 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
20289-1749 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Rho Cap |
163614 |
20 28 52 -17 48 49 |
SHJ 323 AB |
2021 |
80 |
189 |
1.7 |
4.97 |
6.88 |
1.91 |
Y |
<=== |
| Show |
|
163614 |
20 28 52 -17 48 49 |
BU 61 AC |
2008 |
10 |
150 |
54.6 |
4.97 |
13.30 |
8.33 |
|
|
| Show |
|
163614 |
20 28 52 -17 48 49 |
SHJ 323 AD |
2011 |
28 |
150 |
258.7 |
4.97 |
6.68 |
1.71 |
|
|
| Show |
|
163614 |
20 28 52 -17 48 49 |
BU 61 BC |
2015 |
5 |
149 |
53.5 |
6.88 |
12.50 |
5.62 |
|
|
| Show |
|
163617 |
20 29 01 -17 52 31 |
DOB 13 DE |
2020 |
8 |
93 |
53.5 |
6.67 |
10.60 |
3.93 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Rho Cap |
|
Constellation |
Capricornus |
|
SAO |
163614 |
|
HIP |
101027 |
|
| Tycho2 |
6333-02128-1 |
|
Gaia DR2 |
6860945174279114880 |
|
HD |
194943 |
|
HR |
7822 |
|
| GC |
28481 |
|
ADS |
13887 |
|
BD |
BD-18 5689 |
|
Bayer |
Rho Capricorni |
|
| Bayer name |
Rho Cap |
|
Flamsteed |
11 Capricorni |
|
Flamsteed name |
11 Cap |
|
Distance |
30.27 |
|
| Distance ly |
98.74 |
|
Bayer greek |
ρ Cap |
|
ORBITAL ELEMENTS
| Period (P) | 346.6y | ± 18.2 |
Periastron (T) | 1961.6y | ± 1.2 |
Semi-major axis (a) | 2.474a | ± 0.15 |
| Eccentricity (e) | 0.959 | ± 0.008 |
Inclination (i) | 109.8° | ± 1.5 |
Longitude of periastron (ω) | 125.5° | ± 3.3 |
| Node (Ω) | 152.8° | ± 2.9 |
Notes | n | |
Reference | Tok2022g | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
195.3 |
1.254 |
| 2001 |
194.9 |
1.280 |
| 2002 |
194.5 |
1.306 |
| 2003 |
194.2 |
1.331 |
| 2004 |
193.8 |
1.356 |
| 2005 |
193.5 |
1.381 |
| 2006 |
193.2 |
1.405 |
| 2007 |
192.9 |
1.430 |
| 2008 |
192.6 |
1.454 |
| 2009 |
192.3 |
1.477 |
| 2010 |
192.0 |
1.501 |
| 2011 |
191.8 |
1.524 |
| 2012 |
191.5 |
1.547 |
| 2013 |
191.3 |
1.570 |
| 2014 |
191.0 |
1.593 |
| 2015 |
190.8 |
1.615 |
| 2016 |
190.6 |
1.637 |
| 2017 |
190.3 |
1.659 |
| 2018 |
190.1 |
1.681 |
| 2019 |
189.9 |
1.703 |
| 2020 |
189.7 |
1.724 |
| 2021 |
189.5 |
1.745 |
| 2022 |
189.3 |
1.766 |
| 2023 |
189.1 |
1.787 |
| 2024 |
188.9 |
1.807 |
| 2025 |
188.7 |
1.828 |
| 2026 |
188.5 |
1.848 |
| 2027 |
188.4 |
1.868 |
| 2028 |
188.2 |
1.887 |
| 2029 |
188.0 |
1.907 |
| 2030 |
187.9 |
1.926 |
| 2031 |
187.7 |
1.945 |
| 2032 |
187.5 |
1.964 |
| 2033 |
187.4 |
1.983 |
| 2034 |
187.2 |
2.002 |
| 2035 |
187.1 |
2.020 |
| 2036 |
186.9 |
2.039 |
| 2037 |
186.8 |
2.057 |
| 2038 |
186.6 |
2.075 |
| 2039 |
186.5 |
2.092 |
| 2040 |
186.4 |
2.110 |
| 2041 |
186.2 |
2.127 |
| 2042 |
186.1 |
2.145 |
| 2043 |
186.0 |
2.162 |
| 2044 |
185.8 |
2.179 |
| 2045 |
185.7 |
2.196 |
| 2046 |
185.6 |
2.212 |
| 2047 |
185.4 |
2.229 |
| 2048 |
185.3 |
2.245 |
| 2049 |
185.2 |
2.261 |
| 2050 |
185.1 |
2.277 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
