19073+3606 STA 3 (Iot Lyr)
19h 07m 18.13s +36° 06' 00.6" P.A. 223.00 sep 0.1 mag 5.28,6.40 Sp B6IV dist. 274.73 pc (896.17 l.y.)
Coord 2000 |
19073+3606 |
|
Discov num |
STA 3 |
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Comp |
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Coord arcsec 2000 |
19 07 18.13 +36 06 00.6 |
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Date first |
1981 |
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Date last |
2014 |
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Obs |
34 |
|
Pa first |
67 |
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Pa last |
223.4 |
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P.A. Now (θ) |
223.4° |
|
Sep first |
0.1 |
|
Sep last |
0.078 |
|
Sep. Now (ρ) |
0.078" |
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Mag pri |
5.28 |
|
Mag sec |
6.40 |
|
delta mag (ΔM) |
1.12 |
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Spectral class |
B6IV (blue-white) |
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Pri motion ra |
+001 |
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Sec motion ra |
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Pri motion dec |
-004 |
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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 |
Iot Lyr |
|
Constellation |
Lyra |
|
SAO |
67834 |
|
HIP |
93903 |
|
Tycho2 |
2652-01709-1 |
|
Gaia DR2 |
2098699038630265728 |
|
HD |
178475 |
|
HR |
7262 |
|
GC |
26338 |
|
BD |
BD+35 3485 |
|
Bayer |
Iota Lyrae |
|
Bayer name |
Iot Lyr |
|
Flamsteed |
18 Lyrae |
|
Flamsteed name |
18 Lyr |
|
FK5 |
719 |
|
Distance |
274.73 |
|
Distance ly |
896.17 |
|
Bayer greek |
ι Lyr |
|
ORBITAL ELEMENTS
Period (P) | 216.93y | |
Periastron (T) | 1997.28y | |
Semi-major axis (a) | 0.172a | |
Eccentricity (e) | 0.637 | |
Inclination (i) | 145.5° | |
Longitude of periastron (ω) | 201.2° | |
Node (Ω) | 171.4° | |
Notes | n | |
Reference | Hrt2014b | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
310.0 |
0.059 |
2001 |
301.1 |
0.059 |
2002 |
292.3 |
0.060 |
2003 |
283.8 |
0.061 |
2004 |
275.7 |
0.063 |
2005 |
268.1 |
0.066 |
2006 |
261.2 |
0.069 |
2007 |
254.9 |
0.072 |
2008 |
249.1 |
0.076 |
2009 |
244.0 |
0.080 |
2010 |
239.3 |
0.084 |
2011 |
235.0 |
0.088 |
2012 |
231.2 |
0.092 |
2013 |
227.7 |
0.097 |
2014 |
224.5 |
0.101 |
2015 |
221.6 |
0.106 |
2016 |
219.0 |
0.110 |
2017 |
216.5 |
0.115 |
2018 |
214.2 |
0.119 |
2019 |
212.1 |
0.123 |
2020 |
210.1 |
0.128 |
2021 |
208.3 |
0.132 |
2022 |
206.5 |
0.136 |
2023 |
204.9 |
0.140 |
2024 |
203.4 |
0.144 |
2025 |
201.9 |
0.148 |
2026 |
200.5 |
0.152 |
2027 |
199.2 |
0.156 |
2028 |
198.0 |
0.160 |
2029 |
196.8 |
0.163 |
2030 |
195.6 |
0.167 |
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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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