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16426+2340
STF 2087 AC

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

16426+2340 STF 2087 AC

16^h 42^m 34.83^s +23° 40' 01.9" P.A. 355.00 sep 118.9 mag 8.84,12.52 Sp G5IV

Coord 2000	16426+2340	Discov num	STF2087	Comp	AC	Coord arcsec 2000	16 42 34.83 +23 40 01.9
Date first	1911	Date last	2015	Obs	6
Pa first	354	Pa last	354.6	P.A. Now (θ)	354.6°
Sep first	121.4	Sep last	118.901	Sep. Now (ρ)	118.901"
Mag pri	8.84	Mag sec	12.52	delta mag (ΔM)	3.68	Spectral class	G5IV (yellow)
Pri motion ra	+003	Sec motion ra	-014
Pri motion dec	+006	Sec motion dec	-008
Notes	W

rPM=1.366

This double is not physical.

16426+2340 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 150828	84552	16 42 35 +23 40 02	STF 2087 AB	2020	91	287	5.3	8.84	8.90	0.06
Show		84552	16 42 35 +23 40 02	STF 2087 AC	2015	6	355	118.9	8.84	12.52	3.68		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Hercules

SAO

84552

Tycho2

2045-00346-1

Gaia DR2

1299746168507031424

WDS 16426+2340 STF 2087 AC : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STFA		(F. Struve DD - Appendix list #1)	...................
STFB		(F. Struve DD - Appendix list #2)	...................
StF1833A	Ma -	Struve, F.G.W.	1833MmRAS...5...13H
StF1833A	+Mc	cited by Herschel (MemRAS 5, 13, 1833)
StF1833B	Ma -	Struve, F.G.W.	1833AN.....10..389B
StF1833B		cited by Bessel (AN 10, 389, 1833)
StF1837	Ma -	Struve, F.G.W.	1837AN.....14...249
StF1837		Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837		(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A	Ma -	Struve, F.G.W.	1844QB43.S66.......
StF1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A	Ma -	Struve, F.G.W.	.
StF1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A	Ma -	Struve, F.G.W.	1865AN.....64...81E
StF1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A	Ma -	Struve, F.G.W.	1875AN.....85..323D
StF1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878	Ma -	Struve, F.G.W.	.
StF1878		Pulkova Observations 9, 1878
StF1878B	Ma -	Struve, F.G.W.	1878Obs.....2..239G
StF1878B		cited by Gledhill (Obs 2, 239, 1878)
StF1880A	Ma -	Struve, F.G.W.	1880Obs.....3..535G
StF1880A		cited by Gledhill (Obs 3, 535, 1880)
StF1906A	Ma -	Struve, F.G.W.	1906QB821.B972.....
StF1906A		cited in BDS (Burnham Double Star Cat.), 1906
StF1906B	Ma -	Struve, F.G.W.	1906MmRAS..56....1L
StF1906B		cited by Lewis (MemRAS 56, 1, 1906)
StF1922A	Ma -	Struve, F.G.W.	1922AN....216...49R
StF1922A		cited by Rabe (AN 216, 49, 1922)
StF1932A	Ma -	Struve, F.G.W.	1932QB821.A43......
StF1932A		cited in ADS (Aitken Double Star Cat.), 1932
StF2002	- -	Weis, J.
StF2002		F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002		USNO Library : QB 821 .S8 W49 2002
StF2022	- -	email note from Jan Weis: 6 July 2022
StF9999	Ma -	Struve, F.G.W.	...................
StF9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
16426+2340	STF2087	AC	1997	3	354	119.6	8.84	12.00	G5IV	D	164234.83+234001.9
16426+2340	STF2087	AC	2001	4	355	119.2	8.84	12.00	G5IV	D	164234.83+234001.9
16426+2340	STF2087	AC	2015	5	355	118.9	8.84	12.52	G5IV	W	164234.83+234001.9

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

WDS 16426+2340 STF 2087 AC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 16426+2340 STF 2087 AC : MEASURES

No records found.

WDS 16426+2340 : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 16426+2340 : ALADIN DSS IMAGE @ 16^h 42^m 34.83^s +23° 40' 01.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 16426+2340 STF 2087 AC : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		16426+2340	STF2087	AB	287	5.3
Show		16426+2340	STF2087	AC	355	118.9
Show		16417+2338	POU3241		29	3.3	12
Show		16442+2331	STF2094	AB	75	1.1	24
Show		16442+2331	STF2094	AC	312	24.9	24
Show		16442+2331	SMR 63	AD	14	44.7	24
Show		16405+2336	POU3237		156	11.3	29
Show		16439+2411	TDS 832		189	1.0	36
Show		16396+2344	COU 414		196	1.7	42
Show		16447+2419	TDT 64		168	0.8	49
Show		16410+2425	POU3238		31	12.4	51
Show		16434+2251	POU3243		287	4.4	51
Show		16466+2348	POU3245		345	13.5	55
Show		16416+2435	POU3240		148	6.1	56
Show		16464+2400	LDS4693		292	36.8	57
Show		16396+2300	STF2079		91	16.7	58
Show		16463+2307	POU3244		336	14.0	61
Show		16414+2439	POU3239		347	3.4	62
Show		16453+2435	HDS2376		253	0.7	67
Show		16395+2244	HU 486		165	1.3	71
Show		16388+2245	HU 485		278	4.4	76
Show		16440+2453	TDT 56		259	1.5	76
Show		16463+2438	AG 351		303	3.0	77
Show		16474+2300	HU 666		228	0.8	78
Show		16382+2244	POU3235		232	5.4	82
Show		16418+2507	TDT 36		165	0.4	88
Show		16388+2230	UC 3199		304	37.0	89
Show		16433+2508	STF2089		63	2.8	90
Show		16395+2217	CVR 836		348	12.2	94
Show		16361+2309	TDS9996		194	0.9	94
Show		16493+2326	POU3247		118	7.4	94
Show		16489+2259	POU3246		167	16.9	97
Show		16442+2200	J 1326	AB	235	2.6	98
Show		16442+2200	J 1326	AC	71	8.8	98
Show		16393+2213	HDS2360		222	0.1	98
Show		16501+2358	POU3248		348	11.7	105
Show		16409+2157	HO 553		184	12.0	106
Show		16393+2517	LDS4684		47	8.7	107
Show		16421+2151	HU 487		96	0.2	109
Show		16505+2320	KPP4015	AB	114	2.4	111
Show		16501+2256	CVR 842		261	16.0	114
Show		16415+2147	J 738		248	2.0	114
Show		16501+2432	POU3249		9	7.9	115
Show		16493+2450	TDT 102		211	0.5	115
Show		16342+2329	POU3233		142	1.1	117
Show		16343+2314	POU3234		200	7.0	117
Show		16475+2520	KPP3309		296	12.4	121
Show		16398+2534	TDT 26		219	0.7	121
Show		16357+2225	UC 3189		13	42.1	122
Show		16360+2502	TDS9995		347	0.4	122
Show		16352+2446	KPP4007		198	3.4	122

WDS 16426+2340 : COMPONENTS

	A	B
B	pa=288.7° sep=4.85"
C	pa=355.1° sep=118.82"	pa=357.2° sep=116.96"

16426+2340 A

Name	HD 150828	Coord arcsec 2000	164234.83+234001.9	Mag	8.84	Spectral class	G5IV (yellow)
PmRA	3.00	PmDE	6.0	SAO	84552	HIP	81810
Tycho2	2045-00346-1	HD	150828	GC	22485	BD	BD+23 2978

Tycho2

Tycho2	2045-00346-1	Pflag		RAmdeg	250.64502945	DEmdeg	23.66723017
PmRA	-30.4	PmDE	19.7	E RAmdeg	11	E DEmdeg	9
E pmRA	1.2	E pmDE	1.1	EpRAm	1990.84	EpDEm	1991.13
Num	6	Q RAmdeg	1.2	Q DEmdeg	0.9	Q pmRA	1.2
Q pmDE	0.9	BTmag	9.646	E BTmag	0.023	VTmag	8.843
E VTmag	0.016	Prox	54	TYC	T	HIP	81810
CCDM	A	RAdeg	250.64510556	DEdeg	23.66718556	EpRA 1990	1.76
EpDE 1990	1.82	E RAdeg	11.4	E DEdeg	9.3	Posflg
Corr	-0.3

SAO

SAO	84552	DelFlag		RA1950		PmRA1950	-0.0017
DE1950		PmDE1950	0.028	Vmag	8.8	SpType	G0
Double code		Source	70	CatNum	22485	DM	BD+23 2978
DMcomp	A	BDsup		HD	150828	M HD	1
GC	22485	RA1950rad	4.36541866	DE1950rad	0.41469917	PmRA2000	-0.0016
PmDE2000	0.029

Hipparcos

Catalog	H	HIP	81810	Proxy	H	RAhms	16 42 34.83
DEdms	+23 40 01.9	Vmag	8.06	VarFlag		R Vmag	H
RAdeg	250.645	DEdeg	23.6672	AstroRef	A	Plx	15.76
CCDM	16426+2341	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	288	Rho	5.32	HD	150828	BD	BD+23 2978
CD		CP		Dm number	+23 2978	VIred	0.76
SpType	G5IV...	R SpType		Coord arcsec 2000	164234.83+234001.9

Hipparcos 2

HIP	81810	Sn	15	So	3	Nc	2
RArad	4.3745823447	DErad	0.4130704036	Plx	18.57	PmRA	-27.82
PmDE	18.95	E RArad	0.68	E DErad	0.64	E Plx	0.97
E pmRA	0.78	E pmDE	0.77	Hpmag	8.2105	E Hpmag	0.0019
SHp	0.018	VA	0	BV	0.75	E BV	0.012
VI	0.79

16426+2340 B

Coord arcsec 2000	164234.50+234003.5		Mag	8.9		PmRA	-30.00		PmDE	21.0
Tycho2	2045-01484-1		Calc delta mag	0.06		Calc coord	yes

Tycho2

Tycho2	2045-01484-1	Pflag		RAmdeg	250.64348144	DEmdeg	23.66769703
PmRA	-26.9	PmDE	16.8	E RAmdeg	11	E DEmdeg	9
E pmRA	1.2	E pmDE	1.2	EpRAm	1990.89	EpDEm	1991.19
Num	5	Q RAmdeg	0.8	Q DEmdeg	1.1	Q pmRA	0.8
Q pmDE	1.2	BTmag	9.680	E BTmag	0.022	VTmag	8.898
E VTmag	0.016	Prox	54	TYC	T	HIP	81810
CCDM	B	RAdeg	250.64354861	DEdeg	23.66765861	EpRA 1990	1.74
EpDE 1990	1.81	E RAdeg	10.8	E DEdeg	9.0	Posflg
Corr	-0.2

16426+2340 C

Coord arcsec 2000	164234.08+234200.3		Mag	12.52		PmRA	-14.00		PmDE	-8.0
Calc delta mag	3.68		Calc coord	yes