22288-0001 EBE 1 Aa,Ab
22h 28m 49.81s -00° 01' 12.2" P.A. 218.00 sep 0.7 mag 4.34,11.30 Sp F3IV-V dist. 28.17 pc (91.89 l.y.)
Coord 2000 |
22288-0001 |
|
Discov num |
EBE 1 |
|
Comp |
Aa,Ab |
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Coord arcsec 2000 |
22 28 49.81 -00 01 12.2 |
|
Date first |
2009 |
|
Date last |
2021 |
|
Obs |
16 |
|
Pa first |
188 |
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Pa last |
217.6 |
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P.A. Now (θ) |
217.6° |
|
Sep first |
0.4 |
|
Sep last |
0.669 |
|
Sep. Now (ρ) |
0.669" |
|
Mag pri |
4.34 |
|
Mag sec |
11.30 |
|
delta mag (ΔM) |
6.96 |
|
Spectral class |
F3IV-V (yellow-white) |
|
Pri motion ra |
+195 |
|
Sec motion ra |
+176 |
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Pri motion dec |
+034 |
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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
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) | 25.0866y | ± 0.3006 |
Periastron (T) | 2004.4333y | ± 0.6225 |
Semi-major axis (a) | 0.40878a | ± 0.02897 |
Eccentricity (e) | 0.73025 | ± 0.04198 |
Inclination (i) | 64.677° | ± 4.092 |
Longitude of periastron (ω) | 343.108° | ± 17.983 |
Node (Ω) | 34.903° | ± 6.707 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
222.5 |
0.464 |
2001 |
226.4 |
0.382 |
2002 |
232.9 |
0.279 |
2003 |
249.1 |
0.152 |
2004 |
347.4 |
0.071 |
2005 |
59.1 |
0.109 |
2006 |
129.8 |
0.107 |
2007 |
166.6 |
0.185 |
2008 |
180.5 |
0.272 |
2009 |
187.8 |
0.353 |
2010 |
192.4 |
0.424 |
2011 |
195.8 |
0.486 |
2012 |
198.5 |
0.539 |
2013 |
200.7 |
0.583 |
2014 |
202.7 |
0.620 |
2015 |
204.4 |
0.649 |
2016 |
206.0 |
0.669 |
2017 |
207.5 |
0.683 |
2018 |
209.0 |
0.688 |
2019 |
210.5 |
0.685 |
2020 |
212.0 |
0.675 |
2021 |
213.6 |
0.655 |
2022 |
215.3 |
0.626 |
2023 |
217.2 |
0.586 |
2024 |
219.4 |
0.535 |
2025 |
222.2 |
0.471 |
2026 |
226.0 |
0.390 |
2027 |
232.2 |
0.289 |
2028 |
246.6 |
0.164 |
2029 |
334.5 |
0.067 |
2030 |
54.1 |
0.111 |
|
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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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