19404+3121 SEI 657 AB (HD 331099)
19h 40m 21.57s +31° 21' 26.4" P.A. 356.00 sep 19.3 mag 8.91,11.01 Sp F8V
| Coord 2000 |
19404+3121 |
|
Discov num |
SEI 657 |
|
Comp |
AB |
|
Coord arcsec 2000 |
19 40 21.57 +31 21 26.4 |
|
| Date first |
1893 |
|
Date last |
2017 |
|
Obs |
13 |
|
| Pa first |
357 |
|
Pa last |
356.1 |
|
P.A. Now (θ) |
356.1° |
|
| Sep first |
19.2 |
|
Sep last |
19.313 |
|
Sep. Now (ρ) |
19.313" |
|
| Mag pri |
8.91 |
|
Mag sec |
11.01 |
|
delta mag (ΔM) |
2.1 |
|
Spectral class |
F8V (yellow-white) |
|
| Pri motion ra |
-001 |
|
Sec motion ra |
+001 |
|
| Pri motion dec |
-002 |
|
Sec motion dec |
-001 |
|
| Notes |
|
|
rPM=1
This double is not physical.
19404+3121 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
68670 |
19 40 22 +31 21 26 |
COU 1163 Aa,Ab |
2012 |
8 |
166 |
0.1 |
9.50 |
9.50 |
0.00 |
|
|
| Show |
HD 331099 |
68670 |
19 40 22 +31 21 26 |
SEI 657 AB |
2017 |
13 |
356 |
19.3 |
8.91 |
11.01 |
2.10 |
|
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 331099 |
|
Constellation |
Cygnus |
|
SAO |
68670 |
|
Tycho2 |
2656-04841-1 |
|
| Gaia DR2 |
2033142689388971904 |
|
HD |
331099 |
|
DM |
BD+31 3715 |
|
