18549-2357 RCH 7 AB
18h 54m 53.19s -23° 57' 03.5" P.A. 20.00 sep 1.6 mag 7.89,11.07
Coord 2000 |
18549-2357 |
|
Discov num |
RCH 7 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 54 53.19 -23 57 03.5 |
|
Date first |
2009 |
|
Date last |
2016 |
|
Obs |
2 |
|
Pa first |
20 |
|
Pa last |
19.6 |
|
P.A. Now (θ) |
19.6° |
|
Sep first |
1.6 |
|
Sep last |
1.591 |
|
Sep. Now (ρ) |
1.591" |
|
Mag pri |
7.89 |
|
Mag sec |
11.07 |
|
delta mag (ΔM) |
3.18 |
|
Spectral class |
|
|
Pri motion ra |
-003 |
|
Sec motion ra |
|
|
Pri motion dec |
-004 |
|
Sec motion dec |
|
|
Notes |
K
(K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
18549-2357 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
18 54 53 -23 57 04 |
RCH 7 AB |
2016 |
2 |
20 |
1.6 |
7.89 |
11.07 |
3.18 |
|
<=== |
Show |
|
|
18 54 53 -23 57 04 |
OCC 1044 Aa,Ab |
2009 |
0 |
-1 |
0.0 |
7.90 |
11.70 |
3.80 |
|
|
Show |
|
|
18 54 53 -23 57 04 |
OCC 1044 Aa,Ac |
2009 |
0 |
-1 |
0.0 |
7.90 |
12.20 |
4.30 |
|
|
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Sagittarius |
|
Tycho2 |
6860-01491-1 |
|
Gaia DR2 |
4075291508516892032 |
|