17340-7808 DAW 217 AB,D
17h 33m 59.78s -78° 08' 08.1" P.A. 185.00 sep 31.8 mag 8.47,14.80 Sp A4V
| Coord 2000 |
17340-7808 |
|
Discov num |
DAW 217 |
|
Comp |
AB,D |
|
Coord arcsec 2000 |
17 33 59.78 -78 08 08.1 |
|
| Date first |
1918 |
|
Date last |
2000 |
|
Obs |
3 |
|
| Pa first |
189 |
|
Pa last |
184.9 |
|
P.A. Now (θ) |
184.9° |
|
| Sep first |
32.1 |
|
Sep last |
31.76 |
|
Sep. Now (ρ) |
31.76" |
|
| Mag pri |
8.47 |
|
Mag sec |
14.80 |
|
delta mag (ΔM) |
6.33 |
|
Spectral class |
A4V (white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
+006 |
|
| Pri motion dec |
-012 |
|
Sec motion dec |
-022 |
|
| Notes |
|
|
rPM=0.62
Nature of this double is uncertain.
17340-7808 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 157512 |
257508 |
17 33 60 -78 08 08 |
RST 3093 AB |
1991 |
3 |
246 |
0.4 |
8.85 |
9.52 |
0.67 |
|
|
| Show |
|
257508 |
17 33 60 -78 08 08 |
HJ 4937 AB,C |
2000 |
4 |
223 |
34.7 |
9.35 |
12.84 |
3.49 |
|
|
| Show |
|
257508 |
17 33 60 -78 08 08 |
DAW 217 AB,D |
2000 |
3 |
185 |
31.8 |
8.47 |
14.80 |
6.33 |
|
<=== |
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Apus |
|
SAO |
257508 |
|
Tycho2 |
9448-01415-1 |
|
Gaia DR2 |
5776856494885384448 |
|
| HD |
157512 |
|
