17421+2127 DRD 1

17^h 42^m 00.55^s +21° 27' 12.0" P.A. 352.00 sep 17.2 mag 9.05,14.75 Sp K0

Coord 2000	17421+2127	Discov num	DRD 1	Comp		Coord arcsec 2000	17 42 00.55 +21 27 12.0
Date first	1982	Date last	2015	Obs	7
Pa first	354	Pa last	352.4	P.A. Now (θ)	352.4°
Sep first	17.4	Sep last	17.23	Sep. Now (ρ)	17.23"
Mag pri	9.05	Mag sec	14.75	delta mag (ΔM)	5.7	Spectral class	K0 (yellow-orange)
Pri motion ra	+002	Sec motion ra
Pri motion dec	-009	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Hercules

Tycho2

1563-03054-1

Gaia DR2

4556051417258100480

WDS 17421+2127 DRD 1 : NOTES

discov_num	notes	refcode
DRD 1	Initially entered incorrectly as AC pair in 17420+2127.

REFERENCES

refcode	metd	author	reference
Drd1983	Ma j	Durand, P.	1983O&T.....3...30D
Drd1983		Obs. et Travaux 3, 30, 1983
Drd1988	Ma -	Durand, P.	1988O&T....13...27D
Drd1988		Obs. et Travaux 13, 27, 1988
Drd2007	C j	Durand, P. & Pinlou, C.	2007O&T....67...20D
Drd2007		Obs. et Travaux 67, 20, 2007
Drd2008	C j	Durand, P.	2008O&T....71...13D
Drd2008		Obs. et Travaux 71, 13, 2008
Drd2009	C j	Durand, P.	2009O&T....74...23D
Drd2009		Obs. et Travaux 74, 23, 2009
Drd2011	C j	Durand, P., Caille, S. & Honnart, F.	2009O&T....79...12D
Drd2011		Obs. et Travaux 79, 12, 2011

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17421+2127	DRD 1		2007	3	354	17.5	9.05	14.75	K0	N	174200.55+212712.0
17421+2127	DRD 1		2015	4	352	17.2	9.05	14.75	K0	N	174200.55+212712.0

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WDS 17421+2127 DRD 1 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 17421+2127 DRD 1 : MEASURES

No records found.

WDS 17421+2127 : VIRTUAL EYEPIECE

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WDS 17421+2127 : ALADIN DSS IMAGE @ 17^h 42^m 00.55^s +21° 27' 12.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 17421+2127 DRD 1 : 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		17421+2127	DRD 1		352	17.2
Show		17420+2127	STF2197		357	7.9	3
Show		17418+2130	COU 114		261	0.1	5
Show		17427+2138	BRT2438		354	3.1	15
Show		17416+2111	STF2196		257	3.3	17
Show		17414+2111	STF2195		286	21.6	19
Show		17433+2137	DUQ 1	Aa,Ab	283	0.2	20
Show		17433+2137	ALP 31	AB	189	23.0	20
Show		17421+2103	A 1371		113	0.1	25
Show		17404+2144	BRT2436		187	5.6	28
Show		17441+2202	KPP4057	AB	88	5.9	47
Show		17410+2214	SMA 78		238	17.1	49
Show		17452+2107	COU 630		124	0.2	50
Show		17387+2106	KPP3320		250	1.7	51
Show		17422+2031	BRT2437		58	4.1	56
Show		17434+2032	UC 3390		41	23.6	59
Show		17459+2153	STT 335		140	24.8	61
Show		17429+2019	COU 29		191	2.6	70
Show		17386+2219	COU 316	BC	276	2.3	71
Show		17428+2017	COU 28		169	3.5	71
Show		17386+2219	COU 316	AB	186	34.2	71
Show		17406+2017	AG 211		130	2.7	74
Show		17436+2237	HU 1285		211	0.5	74
Show		17370+2150	BRT2435		300	2.9	74
Show		17445+2236	HU 1286		269	3.2	78
Show		17432+2245	COU 629		207	4.0	80
Show		17375+2036	GAU 21	AB	4	16.0	82
Show		17464+2229	KPP4060		7	2.8	88
Show		17360+2100	STF2190	AB	22	10.4	89
Show		17360+2100	WAL 83	AC	37	76.8	89
Show		17481+2205	DAM 860		314	6.0	94
Show		17422+2302	UC 3385		139	24.3	95
Show		17411+2302	LDS4759		105	47.9	96
Show		17445+2304	KPP3321		201	9.1	103
Show		17352+2207	TDT 423		193	0.4	104
Show		17473+2241	COU 633	AB	237	3.0	105
Show		17473+2241	GII 252	Aa,Ab	140	0.2	105
Show		17378+2257	AG 210	AB	190	4.2	108
Show		17378+2257	FYM 246	AC	339	11.2	108
Show		17402+2318	TDT 458		302	2.6	114
Show		17393+2316	TDT 451		222	1.9	115
Show		17376+2306	FOX 204		58	18.6	117
Show		17474+2300	POU3312		94	8.5	119
Show		17496+2226	COU 502		40	2.0	121
Show		17335+2203	TDT 409		257	0.7	124
Show		17471+1945	UC 3405	AB	259	27.2	125
Show		17471+1945	UC 3405	AC	226	1.2	125
Show		17422+2333	TDT 467		282	0.7	126
Show		17506+2046	GRV 966		84	27.8	128
Show		17379+2323	POU3302		203	8.6	130
Show		17355+2311	RAO 511		-1	0.3	137

WDS 17421+2127 : COMPONENTS

	A
B	pa=352.9° sep=17.21"

17421+2127 A

Componente originario normalizzato	AB		Coord arcsec 2000	174200.55+212712.0		Mag	9.05		Spectral class	K0 (yellow-orange)
PmRA	2.00		PmDE	-9.0		Tycho2	1563-03054-1

Tycho2

Tycho2	1563-03054-1	Pflag		RAmdeg	265.50228197	DEmdeg	21.45332668
PmRA	2.0	PmDE	-9.7	E RAmdeg	11	E DEmdeg	10
E pmRA	1.2	E pmDE	1.1	EpRAm	1990.19	EpDEm	1990.40
Num	8	Q RAmdeg	0.8	Q DEmdeg	1.4	Q pmRA	0.8
Q pmDE	1.5	BTmag	10.176	E BTmag	0.025	VTmag	9.050
E VTmag	0.016	Prox	999	TYC	T	HIP
CCDM		RAdeg	265.50227694	DEdeg	21.45334944	EpRA 1990	1.72
EpDE 1990	1.68	E RAdeg	10.5	E DEdeg	10.3	Posflg
Corr	-0.2

17421+2127 B

Componente originario normalizzato	AB		Coord arcsec 2000	174200.40+212729.1		Mag	14.75		Calc delta mag	5.7
Calc coord	yes