15232+3017 STF 1937 AB,D (Eta CrB)
15h 23m 12.23s +30° 17' 17.7" P.A. 40.00 sep 217.9 mag 4.98,11.00 Sp G0V dist. 17.86 pc (58.26 l.y.)
| Coord 2000 |
15232+3017 |
|
Discov num |
STF1937 |
|
Comp |
AB,D |
|
Coord arcsec 2000 |
15 23 12.23 +30 17 17.7 |
|
| Date first |
1879 |
|
Date last |
2016 |
|
Obs |
10 |
|
| Pa first |
49 |
|
Pa last |
40.3 |
|
P.A. Now (θ) |
40.3° |
|
| Sep first |
212.8 |
|
Sep last |
217.86 |
|
Sep. Now (ρ) |
217.86" |
|
| Mag pri |
4.98 |
|
Mag sec |
11.00 |
|
delta mag (ΔM) |
6.02 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
+117 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-171 |
|
Sec motion dec |
+001 |
|
| Notes |
N
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=1.018
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 |
2020 |
1102 |
287 |
0.4 |
5.64 |
5.95 |
0.31 |
Y |
|
| Show |
|
64673 |
15 23 12 +30 17 18 |
STF 1937 AB,C |
2016 |
10 |
358 |
75.1 |
4.98 |
13.35 |
8.37 |
|
|
| Show |
Eta CrB |
64673 |
15 23 12 +30 17 18 |
STF 1937 AB,D |
2016 |
10 |
40 |
217.9 |
4.98 |
11.00 |
6.02 |
|
<=== |
| Show |
|
64673 |
15 23 12 +30 17 18 |
KIR 4 AB,E |
2010 |
2 |
137 |
193.6 |
4.98 |
17.00 |
12.02 |
|
|
Quintuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Eta CrB |
|
Var name |
NSV7054 CrB |
|
Constellation |
Corona Borealis |
|
SAO |
64673 |
|
| HIP |
75312 |
|
Tycho2 |
2563-01366-1 |
|
HD |
137107 |
|
HR |
5727 |
|
| GC |
20696 |
|
ADS |
9617 |
|
GL |
Gl 584A |
|
BD |
BD+30 2653 |
|
| Bayer |
Eta Coronae Borealis |
|
Bayer name |
Eta CrB |
|
Flamsteed |
2 Coronae Borealis |
|
Flamsteed name |
2 CrB |
|
| Distance |
17.86 |
|
Distance ly |
58.26 |
|
Bayer greek |
η CrB |
|
