18429+0545 BU 136 (HD 172979)
18h 42m 53.31s +05° 44' 27.9" P.A. 7.00 sep 4.6 mag 9.15,10.19 Sp B9
| Coord 2000 |
18429+0545 |
|
Discov num |
BU 136 |
|
Comp |
|
|
Coord arcsec 2000 |
18 42 53.31 +05 44 27.9 |
|
| Date first |
1873 |
|
Date last |
2018 |
|
Obs |
28 |
|
| Pa first |
10 |
|
Pa last |
6.5 |
|
P.A. Now (θ) |
6.5° |
|
| Sep first |
4.0 |
|
Sep last |
4.634 |
|
Sep. Now (ρ) |
4.634" |
|
| Mag pri |
9.15 |
|
Mag sec |
10.19 |
|
delta mag (ΔM) |
1.04 |
|
Spectral class |
B9 (blue-white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
-007 |
|
| Pri motion dec |
-028 |
|
Sec motion dec |
+002 |
|
| Notes |
|
|
rPM=1.066
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 172979 |
|
Constellation |
Serpens |
|
Tycho2 |
0459-01307-1 |
|
Gaia DR2 |
4285472428980497152 |
|
| HD |
172979 |
|
