21075-0010 STF 2755 (IV Aqr)

21^h 07^m 32.88^s -00° 09' 49.9" P.A. 79.00 sep 25.4 mag 6.88,9.86 Sp M3III dist. 446.43 pc (1456.25 l.y.)

Coord 2000	21075-0010	Discov num	STF2755	Comp		Coord arcsec 2000	21 07 32.88 -00 09 49.9
Date first	1827	Date last	2019	Obs	34
Pa first	85	Pa last	78.8	P.A. Now (θ)	78.8°
Sep first	21.0	Sep last	25.423	Sep. Now (ρ)	25.423"
Mag pri	6.88	Mag sec	9.86	delta mag (ΔM)	2.98	Spectral class	M3III (red)
Pri motion ra	-007	Sec motion ra	+001
Pri motion dec	-009	Sec motion dec	+001
Notes

rPM=1.123

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Var name	IV Aqr	Constellation	Aquarius	SAO	145121	HIP	104279
Tycho2	5193-01280-1	HD	201098	GC	29522	BD	BD-00 4163
Distance	446.43	Distance ly	1456.25

WDS 21075-0010 STF 2755 (IV Aqr) : 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
21075-0010	STF2755		2006	24	79	24.8	6.88	9.86	M3III	D	210732.88-000949.9
21075-0010	STF2755		2012	28	80	25.1	6.88	9.86	M3III	D	210732.88-000949.9
21075-0010	STF2755		2013	29	79	25.1	6.88	9.86	M3III		210732.88-000949.9
21075-0010	STF2755		2015	30	79	24.9	6.88	9.86	M3III		210732.88-000949.9
21075-0010	STF2755		2016	31	80	25.4	6.88	9.86	M3III		210732.88-000949.9
21075-0010	STF2755		2017	32	80	25.2	6.88	9.86	M3III		210732.88-000949.9
21075-0010	STF2755		2018	33	80	25.2	6.88	9.86	M3III		210732.88-000949.9
21075-0010	STF2755		2019	34	80	25.4	6.88	9.86	M3III		210732.88-000949.9

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

WDS 21075-0010 STF 2755 (IV Aqr) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21075-0010 STF 2755 (IV Aqr) : MEASURES

No records found.

WDS 21075-0010 (IV Aqr) : 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 21075-0010 (IV Aqr) : ALADIN DSS IMAGE @ 21^h 07^m 32.88^s -00° 09' 49.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21075-0010 STF 2755 (IV Aqr) : 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		21075-0010	STF2755		79	25.4
Show		21073-0021	BAL 930		9	3.4	12
Show		21069-0020	J 1718		353	7.3	16
Show		21089+0013	BU 837		181	3.4	21
Show		21103-0016	LDS4866		245	1.8	44
Show		21089-0052	BAL 619		127	15.9	46
Show		21093+0048	BAL1225		215	18.7	48
Show		21053+0044	HDS3007		281	0.1	48
Show		21043+0008	BAL 929		352	14.0	49
Show		21086+0059	BAL1224		77	11.2	52
Show		21104-0042	BAL 620		314	2.9	54
Show		21113+0011	GWP3040		290	12.7	56
Show		21111+0041	SKF1774		308	1.2	62
Show		21119+0032	ITF 212		176	2.6	69
Show		21123-0002	KPP1761		90	13.6	72
Show		21029-0028	TDT2713		59	0.8	72
Show		21080-0104	J 1402		147	3.1	74
Show		21110+0102	A 2287		38	0.1	74
Show		21034-0050	CVR 885		109	27.0	75
Show		21101+0118	HDO 318		313	1.2	79
Show		21119-0053	UC 4401		234	25.6	79
Show		21039+0106	BAL1223		157	11.3	79
Show		21025+0038	HDO 320		225	3.0	81
Show		21069+0131	BAL1579		248	9.2	82
Show		21055-0110	BAL 617		308	14.0	86
Show		21058-0112	CVR 886		354	12.9	86
Show		21127-0045	J 1403		344	4.0	86
Show		21133-0024	NSN 73		265	7.9	88
Show		21129-0045	SLW1231		211	14.0	89
Show		21016-0014	TDT2701		43	1.0	89
Show		21112-0100	LDS4867		104	28.6	90
Show		21016-0029	NSN 500		80	34.1	91
Show		21020+0055	BAL1222		321	12.5	95
Show		21118+0121	UC 4400		189	33.5	96
Show		21119+0126	BAL1581		9	17.0	101
Show		21084+0151	BAL1580		224	4.4	103
Show		21059+0152	YSC 71		263	1.0	105
Show		21031+0132	STF2744	AB	107	1.2	107
Show		21031+0132	STF2744	AC	99	97.8	107
Show		21031+0132	STF2744	AD	300	73.9	107
Show		21116-0118	BAL 621	AB	136	11.3	107
Show		21116-0118	FYM 189	AC	46	12.4	107
Show		21143-0052	LYS 38		23	11.8	109
Show		21002-0014	TDS1110		79	0.9	111
Show		21147-0050	LYS 39	FG	11	20.0	112
Show		21099+0156	GWP3037	AB	180	76.0	112
Show		21099+0156	GWP3038	AC	1	111.6	112
Show		21147-0050	A 883	AB	264	0.1	115
Show		21147-0050	LYS 39	AF	297	185.0	115
Show		21147-0050	LYS 39	AH	126	262.6	115
Show		21147-0050	STF2775	AB,C	178	21.3	115

WDS 21075-0010 : COMPONENTS

	A
B	pa=78.8° sep=25.42"

21075-0010 A

Componente originario normalizzato	AB	Name	IV Aqr	Coord arcsec 2000	210732.88-000949.9	Mag	6.88
Spectral class	M3III (red)	PmRA	-7.00	PmDE	-9.0	SAO	145121
HIP	104279	Tycho2	5193-01280-1	HD	201098	GC	29522
BD	BD-00 4163

Tycho2

Tycho2	5193-01280-1	Pflag		RAmdeg	316.88698235	DEmdeg	-0.16385489
PmRA	-5.1	PmDE	-9.4	E RAmdeg	4	E DEmdeg	5
E pmRA	0.8	E pmDE	0.9	EpRAm	1991.07	EpDEm	1990.31
Num	20	Q RAmdeg	1.0	Q DEmdeg	0.8	Q pmRA	1.0
Q pmDE	0.8	BTmag	8.728	E BTmag	0.017	VTmag	6.879
E VTmag	0.010	Prox	251	TYC	T	HIP	104279
CCDM		RAdeg	316.88699417	DEdeg	-0.16383139	EpRA 1990	1.69
EpDE 1990	1.08	E RAdeg	3.8	E DEdeg	4.8	Posflg
Corr	-0.2

SAO

SAO	145121	DelFlag		RA1950		PmRA1950	-0.0007
DE1950		PmDE1950	-0.005	Vmag	6.8	SpType	Mb
Double code		Source	70	CatNum	29522	DM	BD-00 4163
DMcomp		BDsup		HD	201098	M HD	0
GC	29522	RA1950rad	5.51952235	DE1950rad	-0.00638673	PmRA2000	-0.0005
PmDE2000	-0.009

Hipparcos

Catalog	H	HIP	104279	Proxy		RAhms	21 07 32.88
DEdms	-00 09 49.8	Vmag	6.61	VarFlag	2	R Vmag	H
RAdeg	316.887	DEdeg	-0.163832	AstroRef		Plx	2.65
CCDM	21075-0010	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD	201098	BD	BD-00 4163
CD		CP		Dm number	-00 4163	VIred	2.93
SpType	M3	R SpType		Coord arcsec 2000	210732.88-000949.8

Hipparcos 2

HIP	104279	Sn	5	So	0	Nc	1
RArad	5.5307214624	DErad	-0.0028594023	Plx	2.24	PmRA	-7.4
PmDE	-9.26	E RArad	0.52	E DErad	0.26	E Plx	0.53
E pmRA	0.7	E pmDE	0.28	Hpmag	6.6017	E Hpmag	0.0031
SHp	0.049	VA	2	BV	1.548	E BV	0.024
VI	2.6

CCDM

Ccdm	21075-0010	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.90	DDEs	10.2
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	6.8	Sp	M2	PmNote	*
PmRA	-2	PmDE	-3	Dm number	-00 4163	Cat1	BD
Name2	-00 2732	Cat2	AGK2/3	HD	201098	M HD
ADS BDS	A14654	M ADS BDS		N IDS		IDS	21024S0034A
HIC	104279

21075-0010 B

Componente originario normalizzato	AB		Coord arcsec 2000	210734.54+000954.8		Mag	9.86		PmRA	1.00
PmDE	1.0		Calc delta mag	2.98		Calc coord	yes

CCDM

Ccdm	21075-0010	RComp		Comp	B	Note1
Note2		Discov num	STF2755	DRAs	4.51	DDEs	14.4
R dRAs	10	Year	1829	Theta	083	Rho	24.3
Obs	8	Vmag	10.4	Sp		PmNote	*
PmRA	2	PmDE	4	Dm number		Cat1
Name2	-00 2733	Cat2	AGK2/3	HD		M HD
ADS BDS	A14654	M ADS BDS		N IDS		IDS	21024S0034B
HIC