21369+4025 DRS 20 (74 Cyg)

21^h 36^m 56.98^s +40° 24' 48.6" P.A. 58.00 sep 7.0 mag 4.51,13.30 Sp A5V dist. 65.83 pc (214.74 l.y.)

Coord 2000	21369+4025	Discov num	DRS 20	Comp		Coord arcsec 2000	21 36 56.98 +40 24 48.6
Date first	2008	Date last	2008	Obs	2
Pa first	57	Pa last	58.1	P.A. Now (θ)	58.1°
Sep first	6.9	Sep last	6.98	Sep. Now (ρ)	6.98"
Mag pri	4.51	Mag sec	13.30	delta mag (ΔM)	8.79	Spectral class	A5V (white)
Pri motion ra	-001	Sec motion ra
Pri motion dec	+012	Sec motion dec
Notes	N K (See Notes, K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	74 Cyg	Constellation	Cygnus	SAO	51101	HIP	106711
Tycho2	3187-02159-1	Gaia DR2	1966070246674941824	HD	205835	HR	8266
GC	30263	BD	BD+39 4612	Flamsteed	74 Cygni	Flamsteed name	74 Cyg
FK5	811	Distance	65.83	Distance ly	214.74

SUSPECTED ORBITAL ELEMENTS

Identifier	21369+4025
coord_arcsec_2000	213656.98+402448.6

Period (P)	574.632d	± 9.4158	Periastron (T)	48579.5391d (1991.882y)	± 18.6175	Semi-major axis (a)	8.56m	± 0.91
Eccentricity (e)	0.5349	± 0.1066	Inclination (i)	102.1°	± 4.39	Longitude of periastron (ω)	306.56°	± 14.01
Node (Ω)	18.92°	± 4.91	Notes	n		Reference	HIP1997d
Equinox			Last observation	1991		Grade	9	(1=Definitive, 9=Indet.)

label	theta	rho
2000-01-01	352.2	0.004
2001-01-01	200.3	0.010
2002-01-01	220.8	0.006
2003-01-01	14.1	0.005
2004-01-01	204.5	0.011
2005-01-01	238.0	0.004
2006-01-01	104.0	0.001
2007-01-01	208.6	0.010
2008-01-01	296.5	0.002
2009-01-01	194.4	0.007
2010-01-01	213.6	0.008
2011-01-01	355.0	0.004
2012-01-01	200.7	0.010
2013-01-01	221.7	0.006
2014-01-01	15.6	0.005
2015-01-01	204.8	0.011
2016-01-01	240.7	0.004
2017-01-01	145.2	0.001
2018-01-01	208.9	0.010
2019-01-01	304.2	0.002
2020-01-01	195.2	0.007
2021-01-01	214.2	0.008
2022-01-01	357.6	0.004
2023-01-01	201.1	0.010
2024-01-01	222.8	0.006
2025-01-01	17.3	0.005
2026-01-01	205.2	0.011
2027-01-01	243.7	0.003
2028-01-01	165.6	0.002
2029-01-01	209.3	0.010
2030-01-01	311.7	0.002

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS 21369+4025 DRS 20 (74 Cyg) : NOTES

discov_num	notes	refcode
74 Cyg	Hipparcos astrometric solution assumes circular orbit (e = omega = 0).	HIP1997d

REFERENCES

refcode	metd	author	reference
HIP1997d	orb -	Hipparcos	1997yCat.1239....0E
HIP1997d		Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d		(DMSA/O Orbital Solutions)

DISCOVERER

idgroup	discov	author
1	DRS	De Rosa, R.J., Bulger, J., Patience, J., Leland, B., Macintosh, B., Schnieder, A.,
1	DRS	Song, I., Marois, C. et al.
2	DRS	De Rosa, R.J., Patience, J., Vigan, A., Wilson, P.A., Schnieder, A.,
2	DRS	McConnell, N.J., Wiktorowicz, S.J., Marois, C., Song, I., Macintosh, B.,
2	DRS	Graham, J.R., Bessell, M.S., Doyon, R., & Lai, O.
3	DRS	De Rosa, R.J., Patience, J., Wilson, P. A., Schneider, A., Wiktorowicz, S. J.,
3	DRS	Vigan, A., Marois, C., Song, I., Macintosh, B., Graham, J. R., et al.
6	DRS	De Rosa, R.J., Patience, J., Ward-Duong, K., Vigan, A., Marois, C., Song, I.,
6	DRS	Macintosh, B., Graham, J.R., Doyon, R., Bessell, M.S., et al.
7	DRS	De Rosa, R.J., Nielsen, E.L., Rameau, J., Duchene, G., Greenbaum, A.Z., Wang, J.J.,
7	DRS	Ammons, S.M., Bailey, V.P., Barman, T., Bulger, J., Chilcote, J., Cotten, T.,
7	DRS	Doyon, R., Esposito, T.M., Fitzgerald, M.P., Follette, K.B., Gerard, B.L.,
7	DRS	Goodsell, S.J., Graham, J.R., Hibon, P., Horn, J., Hung, L.-W., Ingraham, P.,
7	DRS	Kalas, P., Konopacky, Q., Larkin, J.E., Macintosh, B., Maire, J., Marchis, F.,
7	DRS	Marley, M.S., Marois, C., Metchev, S., Millar-Blanchaer, M.A., Oppenheimer, R.,
7	DRS	Palmer, D., Patience, J., Perrin, M., Poyneer, L., Pueyo, L., Rajan, A., Rantakyro,
7	DRS	F.T., Ren, B., Ruffio, J.-B., Savransky, D., Schneider, A.C., Sivaramakrishnan, A.,
7	DRS	Song, I., Soummer, R., Tallis, M., Thomas, S., Wallace, J.K., Ward-Duong, K.,
7	DRS	Wiktorowicz, S. & Wolff, S.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21369+4025	DRS 20		2008	1	58	7.0	4.51	13.30	A5V	N DK	213656.98+402448.6

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WDS 21369+4025 DRS 20 (74 Cyg) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21369+4025 DRS 20 (74 Cyg) : MEASURES

No records found.

WDS 21369+4025 (74 Cyg) : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 21369+4025 (74 Cyg) : ALADIN DSS IMAGE @ 21^h 36^m 56.98^s +40° 24' 48.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21369+4025 DRS 20 (74 Cyg) : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		21369+4025	DRS 20		58	7.0
Show		21363+4012	AG 273		3	8.9	16
Show		21363+4002	MLB 28		256	4.3	24
Show		21361+4048	TDT3051		275	0.6	26
Show		21346+4024	MLB 27	AB	325	16.9	28
Show		21346+4024	MLB 27	AC	277	19.3	28
Show		21346+4024	MLB 27	CD	253	6.5	28
Show		21351+4000	MLB 901		233	5.8	33
Show		21396+4049	MLB 29		340	6.8	39
Show		21365+4105	TDT3055		247	0.5	41
Show		21371+3942	TDT3063		159	0.6	43
Show		21408+4027	TDT3102		25	1.4	45
Show		21393+3948	KPP4241		95	4.0	46
Show		21385+3942	MLB 786		209	5.3	47
Show		21331+4047	GRV 477		316	21.5	49
Show		21332+4001	MLB 990		231	4.1	50
Show		21335+3951	TDT3030		176	0.8	53
Show		21353+3935	ALI1163		342	7.1	54
Show		21417+4022	TDT3111		296	2.7	55
Show		21399+3941	A 1446		40	1.3	56
Show		21324+4002	HO 162		330	3.5	57
Show		21336+3943	TDT3031		296	0.6	57
Show		21366+3928	VYS 10		261	1.0	58
Show		21416+4048	S 796	AB	233	58.2	58
Show		21416+4048	S 796	AC	282	132.4	58
Show		21416+4048	FYM 112	AD	163	70.0	58
Show		21416+4048	FYM 112	AE	143	73.8	58
Show		21416+4048	FYM 112	AF	305	55.0	58
Show		21397+3934	TDT3090		171	0.7	60
Show		21333+3940	MLB 900		279	6.8	62
Show		21327+3948	HO 604		316	5.3	62
Show		21419+4058	MLB 30		228	9.1	62
Show		21399+3931	A 1445	AB	283	1.5	64
Show		21399+3931	HJ 1675	AC	264	37.9	64
Show		21331+3938	MLB 899	AB	51	3.2	64
Show		21331+3938	MLB 899	AC	142	27.9	64
Show		21316+4005	MLB 898		251	6.7	65
Show		21387+3924	TDT3080		245	2.7	65
Show		21354+4128	GRV 480		17	15.1	67
Show		21312+4013	MLB 897		23	4.9	67
Show		21321+3949	COU1974		136	0.2	67
Show		21314+4004	HO 161		15	2.9	68
Show		21422+4057	DAM 231		292	8.9	68
Show		21383+3917	GRV 488		19	59.8	70
Show		21371+3915	GRV 485		74	19.6	70
Show		21431+4021	TDT3121		157	1.7	71
Show		21412+4117	COU1977		97	1.2	71
Show		21308+4013	MLB 896	AB	340	3.1	72
Show		21308+4013	MLB 896	AC	69	29.0	72
Show		21424+4105	KUI 108	AB	14	0.2	74
Show		21424+4105	ARY 129	AB,C	132	145.5	74

WDS 21369+4025 : COMPONENTS

	A
B	pa=50.7° sep=5.83"

21369+4025 A

Componente originario normalizzato	AB	Name	74 Cyg	Coord arcsec 2000	213656.98+402448.6	Mag	4.51
Spectral class	A5V (white)	PmRA	-1.00	PmDE	12.0	SAO	51101
HIP	106711	Tycho2	3187-02159-1	HD	205835	HR	8266
GC	30263	BD	BD+39 4612	Flamsteed	74 Cygni	Flamsteed name	74 Cyg
FK5	811

Tycho2

Tycho2	3187-02159-1	Pflag		RAmdeg	324.23739513	DEmdeg	40.41352152
PmRA	-2.3	PmDE	12.5	E RAmdeg	3	E DEmdeg	3
E pmRA	0.6	E pmDE	0.6	EpRAm	1991.16	EpDEm	1991.32
Num	20	Q RAmdeg	1.7	Q DEmdeg	1.3	Q pmRA	1.7
Q pmDE	1.5	BTmag	5.266	E BTmag	0.014	VTmag	5.060
E VTmag	0.009	Prox	999	TYC	T	HIP	106711
CCDM		RAdeg	324.23740167	DEdeg	40.41349250	EpRA 1990	1.59
EpDE 1990	1.68	E RAdeg	3.2	E DEdeg	3.2	Posflg
Corr	0.3

SAO

SAO	51101	DelFlag		RA1950		PmRA1950	-0.0005
DE1950		PmDE1950	0.017	Vmag	5.1	SpType	A5
Double code		Source	74	CatNum	811	DM	BD+39 4612
DMcomp		BDsup		HD	205835	M HD	0
GC	30263	RA1950rad	5.65024949	DE1950rad	0.70141657	PmRA2000	-0.0003
PmDE2000	0.014

Hipparcos

Catalog	H	HIP	106711	Proxy		RAhms	21 36 56.98
DEdms	+40 24 48.6	Vmag	5.04	VarFlag		R Vmag	H
RAdeg	324.237	DEdeg	40.4135	AstroRef	+	Plx	15.79
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag	O	Source		Qual		M HIP
Theta		Rho		HD	205835	BD	BD+39 4612
CD		CP		Dm number	+39 4612	VIred	0.19
SpType	A5V	R SpType		Coord arcsec 2000	213656.98+402448.6

Hipparcos 2

HIP	106711	Sn	75	So	4	Nc	1
RArad	5.6590102679	DErad	0.7053484751	Plx	15.19	PmRA	-1.48
PmDE	12.46	E RArad	0.23	E DErad	0.24	E Plx	0.35
E pmRA	0.27	E pmDE	0.28	Hpmag	5.1005	E Hpmag	0.0003
SHp	0.005	VA	0	BV	0.198	E BV	0.003
VI	0.22

CCDM

Ccdm	21369+4025	RComp		Comp	A	Note1
Note2	%	Discov num		DRAs	2.98	DDEs	-11.3
R dRAs	82	Year		Theta		Rho
Obs	1	Vmag	5.0	Sp	A5	PmNote
PmRA	-2	PmDE	12	Dm number	+39 4612	Cat1	BD
Name2	+40 2231	Cat2	AGK2/3	HD	205835	M HD
ADS BDS		M ADS BDS		N IDS		IDS
HIC	106711

21369+4025 B

Componente originario normalizzato	AB		Coord arcsec 2000	213657.38+402452.3		Mag	13.3		Calc delta mag	8.79
Calc coord	yes