21094-7310 I 379 AB
21h 09m 22.44s -73° 10' 22.6" P.A. 22.00 sep 0.1 mag 5.80,8.60 Sp F9.5V dist. 19.77 pc (64.49 l.y.)
| Coord 2000 |
21094-7310 |
|
Discov num |
I 379 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 09 22.44 -73 10 22.6 |
|
| Date first |
1898 |
|
Date last |
2022 |
|
Obs |
16 |
|
| Pa first |
350 |
|
Pa last |
21.5 |
|
P.A. Now (θ) |
194.8° |
|
| Sep first |
0.9 |
|
Sep last |
0.068 |
|
Sep. Now (ρ) |
0.294" |
|
| Mag pri |
5.80 |
|
Mag sec |
8.60 |
|
delta mag (ΔM) |
2.8 |
|
Spectral class |
F9.5V (yellow-white) |
|
| Pri motion ra |
+460 |
|
Sec motion ra |
|
|
| Pri motion dec |
-286 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
21094-7310 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
257890 |
21 09 22 -73 10 23 |
I 379 AB |
2022 |
16 |
22 |
0.1 |
5.80 |
8.60 |
2.80 |
Y |
<=== |
| Show |
|
257890 |
21 09 22 -73 10 23 |
HDO 305 AB,C |
2015 |
7 |
118 |
6.4 |
5.70 |
13.50 |
7.80 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pavo |
|
SAO |
257890 |
|
HIP |
104440 |
|
Tycho2 |
9333-01274-1 |
|
| HD |
200525 |
|
HR |
8061 |
|
GC |
29489 |
|
CD |
CD-73 1547 |
|
| CP |
CP-73 2192 |
|
Distance |
19.77 |
|
Distance ly |
64.49 |
|
ORBITAL ELEMENTS
| Period (P) | 5.332y | ± 0.003 |
Periastron (T) | 2017.424y | ± 0.005 |
Semi-major axis (a) | 0.1905a | ± 0.0013 |
| Eccentricity (e) | 0.631 | ± 0.002 |
Inclination (i) | 93° | ± 1 |
Longitude of periastron (ω) | ° | ± 0.8 |
| Node (Ω) | ° | ± 0.4 |
Notes | n | |
Reference | Tok2023b | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
178.4 |
0.232 |
| 2001 |
165.4 |
0.027 |
| 2002 |
186.5 |
0.066 |
| 2003 |
181.3 |
0.249 |
| 2004 |
180.1 |
0.310 |
| 2005 |
179.0 |
0.269 |
| 2006 |
176.0 |
0.112 |
| 2007 |
350.2 |
0.028 |
| 2008 |
181.9 |
0.204 |
| 2009 |
180.4 |
0.302 |
| 2010 |
179.4 |
0.294 |
| 2011 |
177.7 |
0.180 |
| 2012 |
2.0 |
0.063 |
| 2013 |
183.1 |
0.144 |
| 2014 |
180.8 |
0.282 |
| 2015 |
179.7 |
0.308 |
| 2016 |
178.4 |
0.231 |
| 2017 |
164.8 |
0.026 |
| 2018 |
186.4 |
0.067 |
| 2019 |
181.3 |
0.250 |
| 2020 |
180.1 |
0.310 |
| 2021 |
179.0 |
0.269 |
| 2022 |
176.0 |
0.111 |
| 2023 |
349.7 |
0.027 |
| 2024 |
181.9 |
0.205 |
| 2025 |
180.4 |
0.302 |
| 2026 |
179.4 |
0.294 |
| 2027 |
177.6 |
0.179 |
| 2028 |
1.9 |
0.063 |
| 2029 |
183.0 |
0.145 |
| 2030 |
180.8 |
0.282 |
| 2031 |
179.7 |
0.308 |
| 2032 |
178.4 |
0.231 |
| 2033 |
164.2 |
0.024 |
| 2034 |
186.3 |
0.068 |
| 2035 |
181.3 |
0.250 |
| 2036 |
180.1 |
0.310 |
| 2037 |
179.0 |
0.268 |
| 2038 |
176.0 |
0.110 |
| 2039 |
349.1 |
0.026 |
| 2040 |
181.9 |
0.206 |
| 2041 |
180.4 |
0.302 |
| 2042 |
179.4 |
0.294 |
| 2043 |
177.6 |
0.178 |
| 2044 |
1.8 |
0.064 |
| 2045 |
183.0 |
0.146 |
| 2046 |
180.8 |
0.282 |
| 2047 |
179.7 |
0.308 |
| 2048 |
178.4 |
0.230 |
| 2049 |
163.5 |
0.023 |
| 2050 |
186.2 |
0.069 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
