18562+0412 STF 2417 AB (Alya)
18h 56m 13.18s +04° 12' 12.9" P.A. 106.00 sep 22.4 mag 4.59,4.93 Sp A5V+A5Vn dist. 47.42 pc (154.68 l.y.)
Coord 2000 |
18562+0412 |
|
Discov num |
STF2417 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 56 13.18 +04 12 12.9 |
|
Date first |
1755 |
|
Date last |
2019 |
|
Obs |
236 |
|
Pa first |
106 |
|
Pa last |
105.5 |
|
P.A. Now (θ) |
105.5° |
|
Sep first |
22.1 |
|
Sep last |
22.435 |
|
Sep. Now (ρ) |
22.435" |
|
Mag pri |
4.59 |
|
Mag sec |
4.93 |
|
delta mag (ΔM) |
0.34 |
|
Spectral class |
A5V+A5Vn (white/white) |
|
Pri motion ra |
+038 |
|
Sec motion ra |
+052 |
|
Pri motion dec |
+027 |
|
Sec motion dec |
+031 |
|
Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
rPM=0.241 (< 0.3, Physical double)
This double is physical.
18562+0412 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Alya |
124068 |
18 56 13 +04 12 13 |
STF 2417 AB |
2019 |
236 |
106 |
22.4 |
4.59 |
4.93 |
0.34 |
|
<=== |
Show |
|
124068 |
18 56 13 +04 12 13 |
STF 2417 AC |
2007 |
18 |
58 |
421.0 |
4.59 |
6.78 |
2.19 |
|
|
Show |
|
124070 |
18 56 15 +04 12 08 |
STF 2417 BC |
2007 |
17 |
56 |
405.6 |
4.93 |
6.78 |
1.85 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Alya |
|
Var name |
NSV11557 Ser |
|
Constellation |
Serpens |
|
SAO |
124068 |
|
HIP |
92946 |
|
Tycho2 |
0457-00687-1 |
|
Gaia DR2 |
4281199284413726208 |
|
HD |
175638 |
|
HR |
7141 |
|
GC |
25991 |
|
ADS |
11853 |
|
BD |
BD+04 3916 |
|
Bayer |
Theta 1 Serpentis |
|
Bayer name |
The1 Ser |
|
Flamsteed |
63 Serpentis |
|
Flamsteed name |
63 Ser |
|
FK5 |
709 |
|
Distance |
47.42 |
|
Distance ly |
154.68 |
|
Bayer greek |
θ1 Ser |
|