20051+2039 BUP 203AC

Coord 2000	20051+2039		Discov num	BUP 203		Comp	AC		Coord arcsec 2000	20 05 04.91 +20 38 53.3
Date first	1895		Date last	2015		Obs	8
Pa first	104		Pa last	102		P.A. Now (θ)	102°
Sep first	59.5		Sep last	59.4		Sep. Now (ρ)	59.4"
Mag pri	8.75		Mag sec	12.97		delta mag (ΔM)	4.22		Spectral class	C6II (red carbon star)
Pri motion ra	+001		Sec motion ra	+002
Pri motion dec	-001		Sec motion dec	+004
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1.14 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		88158	20051+2039	BUP 203	AB	1895	2015	7	247	13.4	8.75	13.50	4.75
Show		88158	20051+2039	BUP 203	AC	1895	2015	8	102	59.4	8.75	12.97	4.22		<===
Show		88158	20051+2039	BLL 44	AD	1879	2015	9	95	75.3	8.75	12.20	3.45

Quadruple system
4 visible stars in this system

Precise pa	102.2		Precise sep	59.358		Constellation	Sagitta		SAO	88158
Tycho2	1629-01033-1		Gaia DR2	43707604736		HD	190606

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20051+2039	BUP 203	AC	2000	3	102	59.4	8.75	12.10		N D	200504.91+203853.3
20051+2039	BUP 203	AC	2001	4	103	59.5	8.75	12.10		N D	200504.91+203853.3
20051+2039	BUP 203	AC	2015	5	102	59.4	8.75	12.97	C6II	N	200504.91+203853.3

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