Coord 2000	20333+4119	Discov num	HER 4	Comp	Aa,Ab	Coord arcsec 2000	20 33 15.08 +41 18 50.5
Date first	1961	Date last	2005	Obs	4
Pa first	200	Pa last	17	P.A. Now (θ)	17°
Sep first	0.9	Sep last	1.1	Sep. Now (ρ)	1.1"
Mag pri	8.98	Mag sec	14.00	delta mag (ΔM)	5.02	Spectral class	O5.5I (blue)
Pri motion ra	-003	Sec motion ra
Pri motion dec	-004	Sec motion dec
Notes	V (Proper motion indicates physical)

Visually invisible, K-band or other infrared star This double is physical.

20333+4119 SYSTEM COMPONENTS

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		49781	20333+4119	HER 4	Aa,Ab	1961	2005	4	17	1.1	8.98	14.00	5.02		<===
Show		49781	20333+4119	HER 4	Aa,Ac	1961	2018	6	340	3.1	8.98	14.00	5.02
Show		49781	20333+4119	HJ 1539	AB	1828	2015	22	203	9.5	9.23	10.80	1.57
Show		49781	20333+4119	ARN 77	AC	1893	2015	11	121	38.0	9.23	10.14	0.91
Show		49781	20333+4119	HJ 1539	AD	1828	2015	9	51	18.2	9.23	11.80	2.57
Show		49781	20333+4119	CAN 52	Aa,N	2005	2005	1	354	7.6	5.50	13.30	7.80
Show		49781	20333+4119	CAN 52	Aa,O	2005	2014	5	310	9.2	5.50	12.00	6.50
Show		49781	20333+4119	ARN 77	BC	1892	2015	14	106	37.8	10.80	10.14	0.66
Show		49781	20333+4119	CAN 52	BF	2008	2008	1	230	0.6	6.60	12.00	5.40
Show		49781	20333+4119	CAN 52	BG	2008	2008	1	307	2.8	6.60	14.90	8.30
Show		49781	20333+4119	CAN 52	BH	2008	2008	1	9	3.6	6.60	14.80	8.20
Show		49781	20333+4119	CAN 52	BI	2008	2008	1	298	4.2	6.60	14.00	7.40
Show		49781	20333+4119	CAN 52	BJ	2008	2008	2	203	4.8	6.60	12.50	5.90
Show		49781	20333+4119	CAN 52	BK	2008	2008	1	81	6.9	6.60	15.20	8.60
Show		49781	20333+4119	CAN 52	BL	2008	2008	2	35	8.0	6.60	14.20	7.60
Show		49781	20333+4119	CAN 52	BM	2008	2008	1	16	11.3	6.60	15.40	8.80
Show		49781	20333+4119	MZA 29	CE	1998	2015	11	185	10.2	10.14	15.40	5.26
Show		49781	20333+4119	CAN 52	CP	2005	2005	1	36	1.7	6.60	14.80	8.20
Show		49781	20333+4119	CAN 52	CQ	1998	2015	7	248	10.3	6.60	11.60	5.00
Show		49781	20333+4119	CAN 52	DN	2008	2008	1	256	15.5	8.80	15.30	6.50
Show		49781	20333+4119	CAN 52	DR	2008	2008	2	174	2.7	8.20	14.30	6.10
Show		49781	20333+4119	CAN 52	DS	2008	2008	2	317	3.0	8.20	13.10	4.90
Show		49781	20333+4119	CAN 52	DT	2008	2008	1	314	4.8	8.20	15.70	7.50
Show		49781	20333+4119	CAN 52	DU	2008	2008	2	342	5.2	8.20	14.40	6.20
Show		49781	20333+4119	CAN 52	DV	2008	2008	1	303	6.0	8.20	14.90	6.70
Show		49781	20333+4119	CAN 52	DW	2008	2008	1	271	7.9	8.20	16.00	7.80
Show		49781	20333+4119	CAN 52	DX	2008	2008	1	50	8.2	8.20	16.40	8.20
Show		49781	20333+4119	CAN 52	DY	2008	2008	1	147	8.7	8.20	15.00	6.80
Show		49781	20333+4119	CAN 52	D,Za	2008	2008	1	48	9.0	8.20	15.90	7.70
Show		49781	20333+4119	CAN 52	D,Zb	2008	2008	1	78	10.4	8.20	16.50	8.30
Show		49781	20333+4119	CAN 52	D,Zc	2008	2008	1	83	10.6	8.20	16.70	8.50
Show		49781	20333+4119	CAN 52	D,Zd	2008	2008	1	136	11.1	8.20	16.70	8.50
Show		49781	20333+4119	CAN 52	D,Ze	1998	2014	5	67	12.5	8.20	15.30	7.10
Show		49781	20333+4119	CAN 52	D,Zf	2008	2008	1	326	13.5	8.20	16.20	8.00

33-fold system
25 visible stars in this system

OTHER CATALOGS AND DESIGNATIONS

Precise pa	17.3	Precise sep	1.13	Constellation	Cygnus	SAO	49781
HIP	101425	Tycho2	3161-01325-1	Gaia DR2	24247057920	BD	BD+40 4227
Distance	255.75	Distance ly	834.26

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20333+4119	HER 4	Aa,Ab	1961	1	200	0.9	8.98	14.00	O6e		203315.08+411850.5
20333+4119	HER 4	Aa,Ab	2005	4	17	1.1	8.98	14.00	O5.5I	V	203315.08+411850.5

If you need more information about this double, apply for a data request form to the WDS.