18448+3736 STFA 38 AD (Zet2 Lyr)
18h 44m 46.36s +37° 36' 18.4" P.A. 150.00 sep 43.7 mag 4.34,5.62 Sp F0IVv dist. 47.69 pc (155.56 l.y.)
Coord 2000 |
18448+3736 |
|
Discov num |
STFA 38 |
|
Comp |
AD |
|
Coord arcsec 2000 |
18 44 46.36 +37 36 18.4 |
|
Date first |
1779 |
|
Date last |
2018 |
|
Obs |
115 |
|
Pa first |
152 |
|
Pa last |
149.7 |
|
P.A. Now (θ) |
149.7° |
|
Sep first |
42.0 |
|
Sep last |
43.732 |
|
Sep. Now (ρ) |
43.732" |
|
Mag pri |
4.34 |
|
Mag sec |
5.62 |
|
delta mag (ΔM) |
1.28 |
|
Spectral class |
F0IVv (yellow-white) |
|
Pri motion ra |
+029 |
|
Sec motion ra |
+019 |
|
Pri motion dec |
+027 |
|
Sec motion dec |
+021 |
|
Notes |
N
T
(See Notes, Parallax indicates physical) |
|
rPM=0.294 (< 0.3, Physical double)
This double is physical.
18448+3736 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
67321 |
18 44 46 +37 36 18 |
BU 968 AB |
2012 |
9 |
50 |
22.3 |
4.34 |
15.80 |
11.46 |
|
|
Show |
|
67321 |
18 44 46 +37 36 18 |
BU 968 AC |
2012 |
8 |
270 |
48.9 |
4.34 |
13.30 |
8.96 |
|
|
Show |
Zet2 Lyr |
67321 |
18 44 46 +37 36 18 |
STFA 38 AD |
2018 |
115 |
150 |
43.7 |
4.34 |
5.62 |
1.28 |
|
<=== |
Show |
|
67321 |
18 44 46 +37 36 18 |
BU 968 AE |
2012 |
9 |
298 |
62.5 |
4.34 |
13.50 |
9.16 |
|
|
Show |
|
67321 |
18 44 46 +37 36 18 |
FYM 42 AF |
2012 |
3 |
330 |
77.5 |
4.34 |
13.70 |
9.36 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
Zet2 Lyr |
|
Var name |
NSV11308 Lyr |
|
Constellation |
Lyra |
|
SAO |
67321 |
|
HIP |
91973 |
|
Tycho2 |
3118-02080-1 |
|
Gaia DR2 |
2096875399811529472 |
|
HD |
173649 |
|
HR |
7057 |
|
GC |
25678 |
|
ADS |
11639 |
|
BD |
BD+37 3223 |
|
Bayer |
Zeta 2 Lyrae |
|
Bayer name |
Zet2 Lyr |
|
Flamsteed |
7 Lyrae |
|
Flamsteed name |
7 Lyr |
|
Distance |
47.69 |
|
Distance ly |
155.56 |
|
Bayer greek |
ζ2 Lyr |
|