20177+3331 HJ 1500 AB (HD 228771)
20h 17m 43.96s +33° 31' 18.7" P.A. 53.00 sep 17.7 mag 9.45,10.60 Sp F5
| Coord 2000 |
20177+3331 |
|
Discov num |
HJ 1500 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 17 43.96 +33 31 18.7 |
|
| Date first |
1828 |
|
Date last |
2015 |
|
Obs |
17 |
|
| Pa first |
111 |
|
Pa last |
53.3 |
|
P.A. Now (θ) |
53.3° |
|
| Sep first |
10.0 |
|
Sep last |
17.7 |
|
Sep. Now (ρ) |
17.7" |
|
| Mag pri |
9.45 |
|
Mag sec |
10.60 |
|
delta mag (ΔM) |
1.15 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
+015 |
|
Sec motion ra |
+051 |
|
| Pri motion dec |
-031 |
|
Sec motion dec |
+044 |
|
| Notes |
|
|
rPM=1.235
This double is not physical.
20177+3331 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 228771 |
69767 |
20 17 44 +33 31 19 |
HJ 1500 AB |
2015 |
17 |
53 |
17.7 |
9.45 |
10.60 |
1.15 |
|
<=== |
| Show |
|
69767 |
20 17 44 +33 31 19 |
HJ 1500 AC |
2015 |
10 |
336 |
32.2 |
9.45 |
12.80 |
3.35 |
|
|
| Show |
|
69767 |
20 17 44 +33 31 19 |
HJ 1500 AD |
2015 |
12 |
318 |
40.9 |
9.45 |
12.40 |
2.95 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 228771 |
|
Constellation |
Cygnus |
|
SAO |
69767 |
|
Tycho2 |
2676-00756-1 |
|
| Gaia DR2 |
2055377254020660864 |
|
HD |
228771 |
|
