17315-7112 B 2838 (HD 157739)
17h 31m 30.16s -71° 12' 16.0" P.A. 40.00 sep 12.6 mag 9.13,11.81 Sp A1IV/V dist. 309.6 pc (1009.92 l.y.)
| Coord 2000 |
17315-7112 |
|
Discov num |
B 2838 |
|
Comp |
|
|
Coord arcsec 2000 |
17 31 30.16 -71 12 16.0 |
|
| Date first |
1895 |
|
Date last |
2015 |
|
Obs |
7 |
|
| Pa first |
38 |
|
Pa last |
40.1 |
|
P.A. Now (θ) |
40.1° |
|
| Sep first |
12.8 |
|
Sep last |
12.556 |
|
Sep. Now (ρ) |
12.556" |
|
| Mag pri |
9.13 |
|
Mag sec |
11.81 |
|
delta mag (ΔM) |
2.68 |
|
Spectral class |
A1IV/V (white) |
|
| Pri motion ra |
+000 |
|
Sec motion ra |
+007 |
|
| Pri motion dec |
-005 |
|
Sec motion dec |
-009 |
|
| Notes |
|
|
rPM=0.707
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 157739 |
|
Constellation |
Apus |
|
SAO |
257506 |
|
HIP |
85764 |
|
| Tycho2 |
9280-02061-1 |
|
Gaia DR2 |
5804753514365145856 |
|
HD |
157739 |
|
CP |
CP-71 2153 |
|
| Distance |
309.6 |
|
Distance ly |
1009.92 |
|