22288-0001 STF 2909 AB (Zet1 Aqr)
22h 28m 49.81s -00° 01' 12.2" P.A. 157.00 sep 2.4 mag 4.34,4.49 Sp F3IV-V dist. 28.17 pc (91.89 l.y.)
| Coord 2000 |
22288-0001 |
|
Discov num |
STF2909 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 28 49.81 -00 01 12.2 |
|
| Date first |
1777 |
|
Date last |
2021 |
|
Obs |
1199 |
|
| Pa first |
18 |
|
Pa last |
157.3 |
|
P.A. Now (θ) |
154.4° |
|
| Sep first |
3.0 |
|
Sep last |
2.387 |
|
Sep. Now (ρ) |
2.407" |
|
| Mag pri |
4.34 |
|
Mag sec |
4.49 |
|
delta mag (ΔM) |
0.15 |
|
Spectral class |
F3IV-V (yellow-white) |
|
| Pri motion ra |
+195 |
|
Sec motion ra |
+176 |
|
| Pri motion dec |
+034 |
|
Sec motion dec |
+013 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.143 (< 0.3, Physical double)
This double is physical.
22288-0001 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
146107 |
22 28 50 -00 01 12 |
EBE 1 Aa,Ab |
2021 |
16 |
218 |
0.7 |
4.34 |
11.30 |
6.96 |
Y |
|
| Show |
Zet1 Aqr |
146107 |
22 28 50 -00 01 12 |
STF 2909 AB |
2021 |
1199 |
157 |
2.4 |
4.34 |
4.49 |
0.15 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Zet1 Aqr |
|
Constellation |
Aquarius |
|
SAO |
146107 |
|
HIP |
110960 |
|
| Tycho2 |
5226-01605-1 |
|
HD |
213052 |
|
HR |
8558 |
|
GC |
31398 |
|
| ADS |
15971 |
|
BD |
BD-00 4365 |
|
Bayer |
Zeta 1 Aquarii |
|
Bayer name |
Zet1 Aqr |
|
| Flamsteed |
55 Aquarii |
|
Flamsteed name |
55 Aqr |
|
Distance |
28.17 |
|
Distance ly |
91.89 |
|
| Bayer greek |
ζ1 Aqr |
|
ORBITAL ELEMENTS
| Period (P) | 426.6517y | ± 122.5798 |
Periastron (T) | 1987.2881y | ± 13.5585 |
Semi-major axis (a) | 3.17843a | ± 0.34966 |
| Eccentricity (e) | 0.3001 | ± 0.1203 |
Inclination (i) | 141.983° | ± 5.944 |
Longitude of periastron (ω) | 284.866° | ± 30.22 |
| Node (Ω) | 137.98° | ± 7.616 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
185.8 |
1.954 |
| 2001 |
184.1 |
1.972 |
| 2002 |
182.5 |
1.990 |
| 2003 |
180.9 |
2.009 |
| 2004 |
179.3 |
2.028 |
| 2005 |
177.8 |
2.047 |
| 2006 |
176.2 |
2.067 |
| 2007 |
174.8 |
2.086 |
| 2008 |
173.3 |
2.106 |
| 2009 |
171.9 |
2.126 |
| 2010 |
170.5 |
2.147 |
| 2011 |
169.1 |
2.167 |
| 2012 |
167.7 |
2.187 |
| 2013 |
166.4 |
2.208 |
| 2014 |
165.1 |
2.228 |
| 2015 |
163.8 |
2.248 |
| 2016 |
162.6 |
2.269 |
| 2017 |
161.3 |
2.289 |
| 2018 |
160.1 |
2.309 |
| 2019 |
158.9 |
2.329 |
| 2020 |
157.8 |
2.348 |
| 2021 |
156.6 |
2.368 |
| 2022 |
155.5 |
2.387 |
| 2023 |
154.4 |
2.407 |
| 2024 |
153.3 |
2.426 |
| 2025 |
152.2 |
2.444 |
| 2026 |
151.1 |
2.463 |
| 2027 |
150.1 |
2.481 |
| 2028 |
149.0 |
2.499 |
| 2029 |
148.0 |
2.516 |
| 2030 |
147.0 |
2.534 |
|
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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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