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21193+5837
STF 2790 AD

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21193+5837 STF 2790 AD

21^h 19^m 15.69^s +58° 37' 24.6" P.A. 352.00 sep 74.8 mag 5.85,10.07 Sp M1I+B2+B3 dist. 591.72 pc (1930.19 l.y.)

Coord 2000	21193+5837		Discov num	STF2790		Comp	AD		Coord arcsec 2000	21 19 15.69 +58 37 24.6
Date first	1880		Date last	2015		Obs	11
Pa first	351		Pa last	352.1		P.A. Now (θ)	352.1°
Sep first	74.5		Sep last	74.817		Sep. Now (ρ)	74.817"
Mag pri	5.85		Mag sec	10.07		delta mag (ΔM)	4.22		Spectral class	M1I+B2+B3 (red/blue-white)
Pri motion ra	-004		Sec motion ra	+016
Pri motion dec	-003		Sec motion dec	+005
Notes	N (See Notes)

rPM=1.285

This double is not physical.

21193+5837 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		33318	21 19 16 +58 37 25	BAG 9 Aa,Ab	2006	27	123	0.1	5.90	7.42	1.52
Show	V381 Cep	33318	21 19 16 +58 37 25	STF 2790 AB	2015	31	45	4.6	5.85	9.27	3.42
Show		33318	21 19 16 +58 37 25	STF 2790 AC	2015	4	183	15.8	5.85	15.20	9.35
Show		33318	21 19 16 +58 37 25	STF 2790 AD	2015	11	352	74.8	5.85	10.07	4.22		<===

Quintuple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	V381 Cep		Constellation	Cepheus		SAO	33318		HIP	105259
Tycho2	3965-00453-1		Gaia DR2	2191213153886504704		HD	203338		HR	8164
ADS	14864		BD	BD+58 2249		Distance	591.72		Distance ly	1930.19