19452+4755 RAP  13AD

 
 
19h 45m 09.29s +47 54' 58.8" P.A. 291.00 sep 7.3 mag 12.50,15.50 Sp M
 
 
Coord 2000
19452+4755
Discov num
RAP  13
Comp
AD
Coord arcsec 2000
19 45 09.29 +47 54 58.8
Date first
1998
Date last
2015
Obs
3
Pa first
289
Pa last
291
P.A. Now (θ)
291°
Sep first
7.2
Sep last
7.3
Sep. Now (ρ)
7.3"
Mag pri
12.50
Mag sec
15.50
delta mag (ΔM)
3
Spectral class
M (red)
Pri motion ra
-032
Sec motion ra
Pri motion dec
-025
Sec motion dec
Notes
K (K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star
Nature of this double is uncertain.
 
 
19452+4755 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 19 45 09 +47 54 59 RAP 13 AB 2010 1 20 1.0 12.50
Show 19 45 09 +47 54 59 RAP 13 AC 2015 3 69 6.3 12.50 13.30 0.80
Show 19 45 09 +47 54 59 RAP 13 AD 2015 3 291 7.3 12.50 15.50 3.00 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
290.7
Precise sep
7.296
Constellation
Hydra
Gaia DR2
2086646952383285888
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19452+4755 RAP 13 AD 2010 2 290 7.0 12.50 15.50 M K 194509.29+475458.8
19452+4755 RAP 13 AD 2015 3 291 7.3 12.50 15.50 M K 194509.29+475458.8

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