20181+4044 TAR 5 AD

20h 18m 06.99s +40° 43' 55.6" P.A. 181.00 sep 49.6 mag 5.96,11.00 Sp O9V+B9V dist. 595.24 pc (1941.67 l.y.)

Coord 2000 20181+4044 Discov num TAR   5 Comp AD Coord arcsec 2000 20 18 06.99 +40 43 55.6
Date first 1887 Date last 2006 Obs 8
Pa first 182 Pa last 180.6 P.A. Now (θ) 180.6°
Sep first 49.4 Sep last 49.63 Sep. Now (ρ) 49.63"
Mag pri 5.96 Mag sec 11.00 delta mag (ΔM) 5.04 Spectral class O9V+B9V (blue/blue-white)
Pri motion ra -003 Sec motion ra -002
Pri motion dec -007 Sec motion dec -006
Notes N (See Notes)




rPM=0.186 (< 0.3, Physical double)

This double is physical.



20181+4044 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49438 20 18 07 +40 43 56 CHR 96 Aa,Ab 2018 31 151 0.1 6.60 6.80 0.20 Y
Show HD 193322 49438 20 18 07 +40 43 56 STF 2666 AB 2018 86 245 2.8 5.96 8.24 2.28
Show 49438 20 18 07 +40 43 56 STF 2666 AC 2006 13 207 34.0 5.96 10.70 4.74
Show 49438 20 18 07 +40 43 56 TAR 5 AD 2006 8 181 49.6 5.96 11.00 5.04 <===
Show 20 18 06 +40 43 25 STF 2666 CD 2018 13 142 24.1 10.70 11.00 0.30


Quintuple system
4 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Cygnus SAO 49438 HIP 100069 Tycho2 3155-02321-1
Gaia DR2 2062360626011542272 HD 193322 HR 7767 ADS 13672
BD BD+40 4103 Distance 595.24 Distance ly 1941.67