18257-2102 HLD 144 AB (HD 169475)
18h 25m 39.08s -21° 02' 17.5" P.A. 42.00 sep 2.8 mag 9.20,9.13 Sp A3/5II
| Coord 2000 |
18257-2102 |
|
Discov num |
HLD 144 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 25 39.08 -21 02 17.5 |
|
| Date first |
1888 |
|
Date last |
2015 |
|
Obs |
15 |
|
| Pa first |
39 |
|
Pa last |
42.3 |
|
P.A. Now (θ) |
42.3° |
|
| Sep first |
3.1 |
|
Sep last |
2.788 |
|
Sep. Now (ρ) |
2.788" |
|
| Mag pri |
9.20 |
|
Mag sec |
9.13 |
|
delta mag (ΔM) |
0.07 |
|
Spectral class |
A3/5II (white) |
|
| Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
| Pri motion dec |
-023 |
|
Sec motion dec |
-023 |
|
| Notes |
|
|
Nature of this double is uncertain.
18257-2102 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 169475 |
|
18 25 39 -21 02 18 |
HLD 144 AB |
2015 |
15 |
42 |
2.8 |
9.20 |
9.13 |
0.07 |
|
<=== |
| Show |
|
|
18 25 39 -21 02 18 |
HLD 144 AC |
2015 |
4 |
281 |
68.8 |
9.20 |
12.60 |
3.40 |
|
|
| Show |
|
|
18 25 34 -21 02 06 |
HLD 144 CD |
2015 |
5 |
159 |
7.5 |
11.50 |
11.80 |
0.30 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 169475 |
|
Constellation |
Sagittarius |
|
Tycho2 |
6278-01761-2 |
|
Gaia DR2 |
4091112999846349312 |
|
| HD |
169475 |
|
