22288-0001 STF2909AB (Zet1 Aqr)

 
 
22h 28m 49.81s -00 01' 12.2" P.A. 157.4 sep 2.24 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
2017
Obs
1177
Pa first
18
Pa last
161
P.A. Now (θ)
157.4°
Sep first
3.0
Sep last
2.3
Sep. Now (ρ)
2.24"
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)
This double is physical.
 
 
22288-0001 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 146107 22288-0001 EBE 1 Aa,Ab 2009 2016 9 212 0.7 4.34 11.30 6.96 Y
Show Zet1 Aqr 146107 22288-0001 STF2909 AB 1777 2017 1177 157 2.2 4.34 4.49 0.15 Y <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Zet1 Aqr
Constellation
Aquarius
SAO
146107
HIP
110960
HD
213051
HR
8558
GC
31398
ADS
15971
Bayer
Zeta 1 Aquarii
Bayer name
Zet1 Aqr
Flamsteed
55 Aquarii
Flamsteed name
55 Aqr
Distance
28.17
Distance ly
91.89
last precise pa
160.8
last precise sep
2.278
 
 
ORBITAL ELEMENTS
 
 
Period (P)540y± 15 Periastron (T)1981.5y± 0.58 Semi-major axis (a)3.496a± 0.046
Eccentricity (e)0.419± 0.011 Inclination (i)142°± 0.4 Longitude of periastron (ω)269.3°± 1.7
Node (Ω)131.3°± 0.8 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 1.810 183.5
2001 1.831 181.7
2002 1.853 180.0
2003 1.875 178.3
2004 1.897 176.7
2005 1.920 175.1
2006 1.944 173.5
2007 1.967 172.0
2008 1.991 170.5
2009 2.015 169.1
2010 2.040 167.6
2011 2.065 166.3
2012 2.089 164.9
2013 2.114 163.6
2014 2.139 162.3
2015 2.164 161.0
2016 2.189 159.8
2017 2.214 158.6
2018 2.239 157.4
2019 2.264 156.3
2020 2.289 155.2
2021 2.314 154.1
2022 2.339 153.0
2023 2.363 151.9
2024 2.388 150.9
2025 2.412 149.9
2026 2.436 148.9
2027 2.460 147.9
2028 2.484 147.0
2029 2.507 146.0
2030 2.530 145.1

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22288-0001 STF2909 AB 2009 1209 169 2.1 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2010 1212 168 2.2 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2011 1201 166 2.2 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2012 1202 167 2.0 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2013 1216 165 2.3 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2014 1158 165 2.1 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2015 1161 164 2.3 4.34 4.49 F3IV-V NOD 222849.81-000112.2
22288-0001 STF2909 AB 2016 1169 163 2.3 4.34 4.49 F3IV-V NO 222849.81-000112.2

If you need more information about this double, apply for a data request form to the WDS.