21004+3411 BU 1329 AB,C (HD 200121)
21h 00m 26.00s +34° 10' 42.4" P.A. 30.00 sep 6.8 mag 8.84,10.53 Sp A2
| Coord 2000 |
21004+3411 |
|
Discov num |
BU 1329 |
|
Comp |
AB,C |
|
Coord arcsec 2000 |
21 00 26.00 +34 10 42.4 |
|
| Date first |
1902 |
|
Date last |
2015 |
|
Obs |
16 |
|
| Pa first |
32 |
|
Pa last |
30.4 |
|
P.A. Now (θ) |
30.4° |
|
| Sep first |
6.5 |
|
Sep last |
6.81 |
|
Sep. Now (ρ) |
6.81" |
|
| Mag pri |
8.84 |
|
Mag sec |
10.53 |
|
delta mag (ΔM) |
1.69 |
|
Spectral class |
A2 (white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
-008 |
|
| Pri motion dec |
-010 |
|
Sec motion dec |
-010 |
|
| Notes |
|
|
rPM=0.312
Nature of this double is uncertain.
21004+3411 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
70781 |
21 00 26 +34 10 42 |
BU 1329 AB |
2012 |
26 |
39 |
0.3 |
8.90 |
9.10 |
0.20 |
|
|
| Show |
HD 200121 |
70781 |
21 00 26 +34 10 42 |
BU 1329 AB,C |
2015 |
16 |
30 |
6.8 |
8.84 |
10.53 |
1.69 |
|
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200121 |
|
Constellation |
Cygnus |
|
SAO |
70781 |
|
Tycho2 |
2709-00544-1 |
|
| Gaia DR2 |
1866412333803837312 |
|
HD |
200121 |
|
