23099-2227 RST 3320 (89 Aqr)
23h 09m 54.88s -22° 27' 27.3" P.A. 92.00 sep 0.2 mag 5.27,6.04 Sp G2IV+A2 dist. 154.56 pc (504.17 l.y.)
Coord 2000 |
23099-2227 |
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Discov num |
RST3320 |
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Comp |
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Coord arcsec 2000 |
23 09 54.88 -22 27 27.3 |
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Date first |
1935 |
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Date last |
2018 |
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Obs |
47 |
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Pa first |
38 |
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Pa last |
91.8 |
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P.A. Now (θ) |
79.6° |
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Sep first |
0.4 |
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Sep last |
0.245 |
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Sep. Now (ρ) |
0.283" |
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Mag pri |
5.27 |
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Mag sec |
6.04 |
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delta mag (ΔM) |
0.77 |
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Spectral class |
G2IV+A2 (yellow/white) |
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Pri motion ra |
+036 |
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Sec motion ra |
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Pri motion dec |
-014 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
89 Aqr |
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Constellation |
Aquarius |
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SAO |
191687 |
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HIP |
114375 |
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Tycho2 |
6401-01356-1 |
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Gaia DR2 |
2385897355615864192 |
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HD |
218640 |
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HR |
8817 |
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GC |
32262 |
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GL |
Wo 9812A |
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CD |
CD-2317771 |
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CP |
CP-23 8278 |
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Flamsteed |
89 Aquarii |
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Flamsteed name |
89 Aqr |
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Distance |
154.56 |
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Distance ly |
504.17 |
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ORBITAL ELEMENTS
Period (P) | 108.4y | |
Periastron (T) | 2001.94y | |
Semi-major axis (a) | 0.282a | |
Eccentricity (e) | 0.463 | |
Inclination (i) | 162.4° | |
Longitude of periastron (ω) | 314° | |
Node (Ω) | 156° | |
Notes | n | |
Reference | Hrt2010a | |
Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
220.5 |
0.148 |
2001 |
210.3 |
0.147 |
2002 |
200.0 |
0.148 |
2003 |
189.9 |
0.150 |
2004 |
180.2 |
0.153 |
2005 |
171.0 |
0.158 |
2006 |
162.3 |
0.163 |
2007 |
154.2 |
0.169 |
2008 |
146.7 |
0.176 |
2009 |
139.7 |
0.182 |
2010 |
133.3 |
0.190 |
2011 |
127.3 |
0.197 |
2012 |
121.7 |
0.204 |
2013 |
116.6 |
0.212 |
2014 |
111.7 |
0.219 |
2015 |
107.3 |
0.227 |
2016 |
103.1 |
0.234 |
2017 |
99.1 |
0.241 |
2018 |
95.4 |
0.249 |
2019 |
91.9 |
0.256 |
2020 |
88.6 |
0.263 |
2021 |
85.4 |
0.270 |
2022 |
82.4 |
0.277 |
2023 |
79.6 |
0.283 |
2024 |
76.9 |
0.290 |
2025 |
74.3 |
0.296 |
2026 |
71.8 |
0.302 |
2027 |
69.4 |
0.308 |
2028 |
67.1 |
0.314 |
2029 |
64.8 |
0.320 |
2030 |
62.7 |
0.325 |
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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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