17195-5004 FIN 356 (HD 156331)

17^h 19^m 30.51^s -50° 03' 49.3" P.A. 101.00 sep 0.1 mag 7.00,7.00 Sp F8III+B9V dist. 59.03 pc (192.56 l.y.)

Coord 2000	17195-5004	Discov num	FIN 356	Comp		Coord arcsec 2000	17 19 30.51 -50 03 49.3
Date first	1959	Date last	2021	Obs	19
Pa first	112	Pa last	101	P.A. Now (θ)	89.3°
Sep first	0.1	Sep last	0.074	Sep. Now (ρ)	0.055"
Mag pri	7.00	Mag sec	7.00	delta mag (ΔM)	0	Spectral class	F8III+B9V (yellow-white/blue-white)
Pri motion ra	+012	Sec motion ra
Pri motion dec	-038	Sec motion dec
Notes	N O (See Notes, Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 156331	Constellation	Ara	SAO	244631	HIP	84759
Tycho2	8349-03741-1	Gaia DR2	5926350154581350528	HD	156331	HR	6423
GC	23365	CD	CD-4911324	CP	CP-49 9879	Distance	59.03
Distance ly	192.56

ORBITAL ELEMENTS

Period (P)	12.93y	± 0.15	Periastron (T)	2010.65y	± 0.16	Semi-major axis (a)	0.114a	± 0.016
Eccentricity (e)	0.814	± 0.053	Inclination (i)	98.6°	± 1.9	Longitude of periastron (ω)	93.6°	± 1.4
Node (Ω)	85.9°	± 1	Notes			Reference	Tok2017b
Equinox	2000		Last observation			Grade	2	(1=Definitive, 9=Indet.)

label	theta	rho
2000	246.2	0.058
2001	235.2	0.049
2002	218.2	0.038
2003	191.0	0.031
2004	158.5	0.032
2005	134.0	0.041
2006	119.1	0.052
2007	109.6	0.063
2008	102.7	0.072
2009	96.9	0.074
2010	90.0	0.058
2011	264.4	0.042
2012	254.1	0.062
2013	245.5	0.058
2014	234.3	0.048
2015	216.6	0.037
2016	188.8	0.031
2017	156.4	0.033
2018	132.7	0.041
2019	118.3	0.053
2020	109.1	0.064
2021	102.3	0.072
2022	96.5	0.073
2023	89.3	0.055
2024	263.3	0.045
2025	253.5	0.062
2026	244.9	0.057
2027	233.3	0.047
2028	215.0	0.037
2029	186.5	0.031
2030	154.4	0.033

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

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

WDS 17195-5004 FIN 356 (HD 156331) : NOTES

discov_num	notes	refcode
FIN 356	Composite spectrum, F8III+B9V.

REFERENCES

refcode	metd	author	reference
Tok2017b	orb j	Tokovinin, A.	2017AJ....154..110T
Tok2017b		AJ 154, 110, 2017

DISCOVERER

idgroup	discov	author
1	FIN	Finsen, W.S.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17195-5004	FIN 356		1992	3	311	0.1	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2009	6	95	0.1	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2012	10	71	0.1	7.00	7.00	F8III+B9V	N D	171930.51-500349.3
17195-5004	FIN 356		2013	11	58	0.0	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2014	12	49	0.0	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2015	13	26	0.0	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2017	15	128	0.0	7.00	7.00	F8III+B9V	N	171930.51-500349.3
17195-5004	FIN 356		2018	16	128	0.0	7.00	7.00	F8III+B9V	NO	171930.51-500349.3
17195-5004	FIN 356		2019	17	116	0.1	7.00	7.00	F8III+B9V	NO	171930.51-500349.3
17195-5004	FIN 356		2020	18	109	0.1	7.00	7.00	F8III+B9V	NO	171930.51-500349.3
17195-5004	FIN 356		2021	19	101	0.1	7.00	7.00	F8III+B9V	NO	171930.51-500349.3

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

WDS 17195-5004 FIN 356 (HD 156331) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 17195-5004 FIN 356 (HD 156331) : MEASURES

No records found.

WDS 17195-5004 (HD 156331) : VIRTUAL EYEPIECE

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WDS 17195-5004 (HD 156331) : ALADIN DSS IMAGE @ 17^h 19^m 30.51^s -50° 03' 49.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 17195-5004 FIN 356 (HD 156331) : 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		17195-5004	FIN 356		101	0.1	1
Show		17201-4950	BRT 956		177	4.5	16
Show		17176-5010	I 1314		330	2.7	20
Show		17198-5025	RST1949		75	2.4	22
Show		17207-4930	B 2831		317	9.6	36
Show		17230-5032	I 1316		193	1.1	44
Show		17189-4920	B 2407		122	9.6	44
Show		17232-4937	SWR 218		265	11.0	45
Show		17151-5033	I 1000		168	1.1	52
Show		17247-4955	CPO 522		332	5.2	52
Show		17149-5032	SKF1414		195	18.7	53
Show		17249-5011	I 1318		194	2.1	53
Show		17248-4951	BRT 964		358	5.2	53
Show		17249-4950	CPO 523		118	4.7	55
Show		17206-4909	RST 919		89	2.4	57
Show		17165-4915	RST 914		118	1.2	57
Show		17191-4902	RST 918		310	0.5	61
Show		17166-4910	RST 915		325	1.1	61
Show		17147-4921	RST 910		200	1.9	64
Show		17178-5108	HJ 4927		148	10.9	66
Show		17255-4932	RST 926		10	2.5	67
Show		17218-5107	BRT 959		99	5.1	68
Show		17232-5101	HDS2454		150	0.3	68
Show		17145-4913	RST 909	AB	196	0.6	71
Show		17145-4913	RST 909	AC	205	2.7	71
Show		17124-5021	RST1938		102	0.9	71
Show		17260-5038	HDO 313	AB	187	47.7	71
Show		17260-5038	HDO 313	AC	110	41.3	71
Show		17176-4855	I 1601		169	1.6	72
Show		17259-4926	CPO 524		112	4.3	74
Show		17273-4944	BRT 968		22	3.2	78
Show		17116-4949	NSN 375		166	29.0	78
Show		17274-4941	BRT 969		49	4.0	80
Show		17272-5038	SEE 328	AB	159	75.5	82
Show		17272-5038	SEE 328	AD	166	40.6	82
Show		17235-5116	BRT 963		135	4.6	82
Show		17140-4902	RST 907		150	0.3	82
Show		17272-5038	SEE 328	BC	272	4.2	83
Show		17283-4951	RST 928		107	2.2	86
Show		17293-5015	ELP 42		16	0.7	96
Show		17111-4912	CPO 513		193	4.2	97
Show		17297-4947	I 1323		126	0.3	100
Show		17290-5048	CPO 527		34	4.0	101
Show		17295-5040	SWR 223		209	13.1	102
Show		17087-4955	RST 900		145	1.6	105
Show		17089-5034	HDS2421		121	0.6	107
Show		17305-5013	CPO9237	AB	126	4.4	107
Show		17305-5013	CPO9237	AC	245	7.4	107
Show		17298-4920	CPO 529		208	4.1	110
Show		17264-4837	SHY 297	AB	314	127.0	110
Show		17264-4837	TOK 415	Ba,Bb	119	1.0	111

WDS 17195-5004 : COMPONENTS

	A
B	pa=106.8° sep=0.05"

17195-5004 A

Componente originario normalizzato	AB	Name	HD 156331	Coord arcsec 2000	171930.51-500349.3	Mag	7
Spectral class	F8III (yellow-white)	PmRA	12.00	PmDE	-38.0	SAO	244631
HIP	84759	Tycho2	8349-03741-1	HD	156331	HR	6423
GC	23365	CD	CD-4911324	CP	CP-49 9879

Tycho2

Tycho2	8349-03741-1	Pflag		RAmdeg	259.87714057	DEmdeg	-50.06376737
PmRA	7.0	PmDE	-34.9	E RAmdeg	4	E DEmdeg	5
E pmRA	1.0	E pmDE	1.0	EpRAm	1991.32	EpDEm	1990.71
Num	13	Q RAmdeg	1.0	Q DEmdeg	1.2	Q pmRA	1.0
Q pmDE	1.1	BTmag	6.732	E BTmag	0.015	VTmag	6.314
E VTmag	0.010	Prox	999	TYC	T	HIP	84759
CCDM		RAdeg	259.87711556	DEdeg	-50.06368333	EpRA 1990	1.72
EpDE 1990	1.33	E RAdeg	3.9	E DEdeg	4.7	Posflg
Corr	0.2

SAO

SAO	244631	DelFlag		RA1950		PmRA1950	-0.0012
DE1950		PmDE1950	-0.014	Vmag	6.5	SpType	F0
Double code		Source	70	CatNum	23365	DM	CD-4911324
DMcomp		BDsup		HD	156331	M HD	0
GC	23365	RA1950rad	4.5188179	DE1950rad	-0.87286933	PmRA2000	-0.0014
PmDE2000	-0.015

Hipparcos

Catalog	H	HIP	84759	Proxy		RAhms	17 19 30.51
DEdms	-50 03 49.3	Vmag	6.27	VarFlag		R Vmag	H
RAdeg	259.877	DEdeg	-50.0637	AstroRef		Plx	17.95
CCDM	17195-5004	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	156331	BD
CD	CD-4911324	CP	CP-49 9879	Dm number	-4911324	VIred	0.47
SpType	F2III	R SpType		Coord arcsec 2000	171930.51-500349.3

Hipparcos 2

HIP	84759	Sn	5	So	0	Nc	1
RArad	4.5357114211	DErad	-0.8737761168	Plx	16.94	PmRA	8.76
PmDE	-32.86	E RArad	0.51	E DErad	0.28	E Plx	0.51
E pmRA	0.61	E pmDE	0.27	Hpmag	6.3619	E Hpmag	0.001
SHp	0.007	VA	0	BV	0.413	E BV	0.007
VI	0.48

CCDM

Ccdm	17195-5004	RComp		Comp	A	Note1
Note2		Discov num		DRAs	0.52	DDEs	10.7
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	7.2	Sp	F0	PmNote	*
PmRA	8	PmDE	-27	Dm number	-4911324	Cat1	CD
Name2	244631	Cat2	SAO	HD	156331	M HD
ADS BDS		M ADS BDS		N IDS		IDS	17118S4958A
HIC	84759

17195-5004 B

Componente originario normalizzato	AB		Coord arcsec 2000	171930.51-500349.3		Mag	7		Spectral class	B9V (blue-white)
Calc coord	yes

CCDM

Ccdm	17195-5004	RComp		Comp	B	Note1
Note2		Discov num	FIN 356	DRAs		DDEs
R dRAs		Year	1959	Theta	112	Rho	0.1
Obs	1	Vmag	7.2	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	17118S4958B
HIC	84759