20139+1806 BPMA242

 
 
20h 13m 52.56s +18 05' 50.5" P.A. 194.00 sep 288.2 mag 15.04,15.48
 
 
Coord 2000
20139+1806
Discov num
BPMA242
Comp
Coord arcsec 2000
20 13 52.56 +18 05 50.5
Date first
1997
Date last
2015
Obs
9
Pa first
194
Pa last
194
P.A. Now (θ)
194°
Sep first
287.9
Sep last
288.2
Sep. Now (ρ)
288.2"
Mag pri
15.04
Mag sec
15.48
delta mag (ΔM)
0.44
Spectral class
Pri motion ra
-012
Sec motion ra
-021
Pri motion dec
-021
Sec motion dec
-033
Notes
N V (See Notes, Proper motion indicates physical)
Visually invisible, K-band or other infrared star rPM=0.383
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
194
Precise sep
288.157
Constellation
Sagitta
Tycho2
1622-00428-1
Gaia DR2
90159563520
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20139+1806 BPMA242 2000 2 194 288.1 15.04 15.48 NV 201352.56+180550.5
20139+1806 BPMA242 2001 3 194 288.0 15.04 15.48 NV 201352.56+180550.5
20139+1806 BPMA242 2010 4 194 288.5 15.04 15.48 NV 201352.56+180550.5
20139+1806 BPMA242 2015 5 194 288.1 15.04 15.48 NV 201352.56+180550.5

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