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 |
2018 |
|
Obs |
78 |
|
Pa first |
177 |
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Pa last |
188.9 |
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P.A. Now (θ) |
188.9° |
|
Sep first |
4.0 |
|
Sep last |
1.684 |
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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 |
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Sec motion dec |
-017 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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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 |
2018 |
78 |
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 |
|
163617 |
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 |
6 |
93 |
53.5 |
6.67 |
10.60 |
3.93 |
|
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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 |
|
GL |
Gl 791.1A |
|
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) | 375.9934y | ± 35.3768 |
Periastron (T) | 1963.1816y | ± 0.9798 |
Semi-major axis (a) | 2.49532a | ± 0.28841 |
Eccentricity (e) | 0.96563 | ± 0.00996 |
Inclination (i) | 112.355° | ± 2.353 |
Longitude of periastron (ω) | 125.842° | ± 5.728 |
Node (Ω) | 150.379° | ± 2.937 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
195.2 |
1.269 |
2001 |
194.9 |
1.295 |
2002 |
194.5 |
1.321 |
2003 |
194.2 |
1.346 |
2004 |
193.9 |
1.372 |
2005 |
193.6 |
1.397 |
2006 |
193.3 |
1.421 |
2007 |
193.0 |
1.446 |
2008 |
192.7 |
1.470 |
2009 |
192.4 |
1.494 |
2010 |
192.2 |
1.517 |
2011 |
191.9 |
1.541 |
2012 |
191.7 |
1.564 |
2013 |
191.4 |
1.587 |
2014 |
191.2 |
1.609 |
2015 |
191.0 |
1.632 |
2016 |
190.8 |
1.654 |
2017 |
190.6 |
1.676 |
2018 |
190.3 |
1.698 |
2019 |
190.1 |
1.719 |
2020 |
189.9 |
1.741 |
2021 |
189.8 |
1.762 |
2022 |
189.6 |
1.783 |
2023 |
189.4 |
1.804 |
2024 |
189.2 |
1.824 |
2025 |
189.0 |
1.845 |
2026 |
188.9 |
1.865 |
2027 |
188.7 |
1.885 |
2028 |
188.5 |
1.904 |
2029 |
188.4 |
1.924 |
2030 |
188.2 |
1.943 |
|
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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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