15232+3017 STF 1937 AB,C
15h 23m 12.23s +30° 17' 17.7" P.A. 357.00 sep 76.8 mag 4.98,13.35 Sp G0V dist. 17.86 pc (58.26 l.y.)
| Coord 2000 |
15232+3017 |
|
Discov num |
STF1937 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
15 23 12.23 +30 17 17.7 |
|
| Date first |
1856 |
|
Date last |
2023 |
|
Obs |
13 |
|
| Pa first |
26 |
|
Pa last |
357.1 |
|
P.A. Now (θ) |
357.1° |
|
| Sep first |
48.6 |
|
Sep last |
76.84 |
|
Sep. Now (ρ) |
76.84" |
|
| Mag pri |
4.98 |
|
Mag sec |
13.35 |
|
delta mag (ΔM) |
8.37 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
+117 |
|
Sec motion ra |
-010 |
|
| Pri motion dec |
-171 |
|
Sec motion dec |
+014 |
|
| Notes |
N
L
U
(See Notes, Linear solution, Proper motion indicates non-physical) |
|
rPM=1.083
This double is not physical.
15232+3017 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
64673 |
15 23 12 +30 17 18 |
STF 1937 AB |
2024 |
1112 |
356 |
0.7 |
5.64 |
5.95 |
0.31 |
Y |
|
| Show |
|
64673 |
15 23 12 +30 17 18 |
STF 1937 AB,C |
2023 |
13 |
357 |
76.8 |
4.98 |
13.35 |
8.37 |
|
<=== |
| Show |
Eta CrB |
64673 |
15 23 12 +30 17 18 |
STF 1937 AB,D |
2023 |
11 |
40 |
218.1 |
4.98 |
11.00 |
6.02 |
|
|
| Show |
|
64673 |
15 23 12 +30 17 18 |
KIR 4 AB,E |
2016 |
3 |
136 |
190.0 |
4.98 |
17.00 |
12.02 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV7054 CrB |
|
Constellation |
Corona Borealis |
|
SAO |
64673 |
|
HIP |
75312 |
|
| Tycho2 |
2563-01366-1 |
|
HD |
137107 |
|
HR |
5727 |
|
GC |
20696 |
|
| ADS |
9617 |
|
BD |
BD+30 2653 |
|
Bayer |
Eta Coronae Borealis |
|
Bayer name |
Eta CrB |
|
| Distance |
17.86 |
|
Distance ly |
58.26 |
|
Bayer greek |
η CrB |
|
