19542+1755 BPM1808

 
 
19h 54m 09.69s +17 54' 41.5" P.A. 195.00 sep 86.6 mag 15.32,15.58
 
 
Coord 2000
19542+1755
Discov num
BPM1808
Comp
Coord arcsec 2000
19 54 09.69 +17 54 41.5
Date first
1997
Date last
2015
Obs
7
Pa first
195
Pa last
195
P.A. Now (θ)
195°
Sep first
86.8
Sep last
86.6
Sep. Now (ρ)
86.6"
Mag pri
15.32
Mag sec
15.58
delta mag (ΔM)
0.26
Spectral class
Pri motion ra
-056
Sec motion ra
-023
Pri motion dec
-025
Sec motion dec
-027
Notes
N V (See Notes, Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=0.539
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
195.3
Precise sep
86.551
Constellation
Sagitta
SAO
105398
Tycho2
1620-02556-1
Gaia DR2
71397698816
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19542+1755 BPM1808 1997 2 195 86.7 15.32 15.58 NV 195409.69+175441.5
19542+1755 BPM1808 2001 3 195 86.7 15.32 15.58 NV 195409.69+175441.5
19542+1755 BPM1808 2010 4 195 86.1 15.32 15.58 NV 195409.69+175441.5
19542+1755 BPM1808 2015 5 195 86.6 15.32 15.58 NV 195409.69+175441.5

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