18341-4218 DON 910 (HD 170961)

18^h 34^m 07.81^s -42° 17' 41.1" P.A. 143.00 sep 0.6 mag 9.60,11.80 Sp A2/3IV

Coord 2000	18341-4218	Discov num	DON 910	Comp		Coord arcsec 2000	18 34 07.81 -42 17 41.1
Date first	1931	Date last	1936	Obs	2
Pa first	147	Pa last	143	P.A. Now (θ)	143°
Sep first	0.6	Sep last	0.62	Sep. Now (ρ)	0.62"
Mag pri	9.60	Mag sec	11.80	delta mag (ΔM)	2.2	Spectral class	A2/3IV (white)
Pri motion ra	+008	Sec motion ra
Pri motion dec	-007	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 170961		Constellation	Corona Austrina		SAO	229116		Tycho2	7910-00686-1
Gaia DR2	6722488859013187712		HD	170961		DM	CP-42 8425

WDS 18341-4218 DON 910 (HD 170961) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Don1937	Ma j	Donner, H.F.	1937MmRAS..65...51R
Don1937		MemRAS 65, 51, 1937
Don1955	Ma -	Donner, H.F.	1955POMic..11....1R
Don1955		Pub. Univ. Michigan Obs. 11, 1, 1955
Don1964	Ma j	Donner, H.F.	1964POMic...9...73R
Don1964		Pub. Univ. Michigan Obs. 9, 73, 1964

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18341-4218	DON 910		1936	2	143	0.6	9.60	11.80	A2/3IV		183407.81-421741.1

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WDS 18341-4218 DON 910 (HD 170961) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18341-4218 DON 910 (HD 170961) : MEASURES

No records found.

WDS 18341-4218 (HD 170961) : VIRTUAL EYEPIECE

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WDS 18341-4218 (HD 170961) : ALADIN DSS IMAGE @ 18^h 34^m 07.81^s -42° 17' 41.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18341-4218 DON 910 (HD 170961) : 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		18341-4218	DON 910		143	0.6
Show		18334-4240	CPO 82	AB	45	5.9	24
Show		18334-4240	I 9020	AC	74	25.1	24
Show		18329-4156	B 2453		256	6.3	26
Show		18323-4159	CPO9268		83	5.3	28
Show		18370-4207	I 1374		119	2.2	34
Show		18368-4233	CRI 20		92	8.4	34
Show		18302-4202	CPO 587		56	4.6	47
Show		18366-4140	RST2067		192	1.6	47
Show		18297-4221	BRT1060		179	3.2	49
Show		18367-4137	CPO 593		257	3.7	50
Show		18382-4240	CPO 595		17	3.9	51
Show		18378-4148	BRT1071		353	3.6	51
Show		18345-4127	RST2063		181	6.3	52
Show		18298-4241	BRT1059		23	2.7	54
Show		18300-4149	TDT 915		90	0.8	55
Show		18385-4247	DON 915		211	2.5	57
Show		18295-4243	DON 904		108	1.2	57
Show		18293-4157	B 2449		269	10.2	58
Show		18309-4307	BRT1061		26	9.3	61
Show		18312-4312	DAM 677		210	3.5	64
Show		18300-4134	RST2058		38	0.5	64
Show		18289-4246	CPO9267		36	5.6	65
Show		18402-4200	UC 3634		112	43.8	70
Show		18314-4322	CPO 81	AB	35	12.4	71
Show		18314-4322	CPO 81	AC	110	8.1	71
Show		18387-4127	HJ 5052		130	5.7	73
Show		18400-4137	I 1377		81	1.7	78
Show		18285-4129	BRT1058	AB	178	5.2	78
Show		18285-4129	BRT1058	Aa,Ab	102	0.2	78
Show		18411-4227	TDS 932			4.0	78
Show		18274-4154	TDT 883		294	0.5	79
Show		18412-4210	I 250		110	1.2	80
Show		18270-4223	BRT1055		81	5.5	80
Show		18269-4228	BRT1054		165	3.5	81
Show		18287-4318	DON 903		149	1.2	85
Show		18352-4048	CPO 591		7	5.2	90
Show		18421-4237	UC 3645		333	14.3	90
Show		18312-4344	I 1369		238	4.3	92
Show		18404-4320	SKF1149		22	42.5	94
Show		18321-4046	RST4014	AB	231	0.3	95
Show		18321-4046	RST4014	Aa,Ab	327	0.1	95
Show		18390-4336	BRT1073	AB	285	4.3	95
Show		18390-4336	DAM 113	AC	153	10.2	95
Show		18322-4045	RST2061		132	2.4	96
Show		18341-4358	BRT1064		332	4.4	100
Show		18408-4330	DON 918		130	2.1	103
Show		18251-4148	BRT1050		312	2.8	106
Show		18362-4402	BRT1068		141	1.8	107
Show		18308-4358	DON 905		53	0.5	108
Show		18431-4134	I 1380		170	1.5	109

WDS 18341-4218 : COMPONENTS

	A
B	pa=150.9° sep=0.57"

18341-4218 A

Componente originario normalizzato	AB	Name	HD 170961	Coord arcsec 2000	183407.81-421741.1	Mag	9.6
Spectral class	A2/3IV (white)	PmRA	8.00	PmDE	-7.0	SAO	229116
Tycho2	7910-00686-1	HD	170961	DM	CP-42 8425

Tycho2

Tycho2	7910-00686-1	Pflag		RAmdeg	278.53255110	DEmdeg	-42.29476430
PmRA	11.0	PmDE	-3.2	E RAmdeg	11	E DEmdeg	15
E pmRA	1.2	E pmDE	1.4	EpRAm	1989.23	EpDEm	1988.91
Num	6	Q RAmdeg	1.0	Q DEmdeg	1.3	Q pmRA	1.0
Q pmDE	1.2	BTmag	9.701	E BTmag	0.024	VTmag	9.499
E VTmag	0.024	Prox	999	TYC	T	HIP
CCDM		RAdeg	278.53251694	DEdeg	-42.29475556	EpRA 1990	1.82
EpDE 1990	1.76	E RAdeg	11.5	E DEdeg	15.6	Posflg
Corr	-0.2

SAO

SAO	229116	DelFlag		RA1950		PmRA1950	0.0012
DE1950		PmDE1950	0.004	Vmag	9	SpType	A0
Double code		Source	48	CatNum	17491	DM	CP-42 8425
DMcomp		BDsup		HD	170961	M HD	0
GC		RA1950rad	4.84574345	DE1950rad	-0.73886424	PmRA2000	0.0012
PmDE2000	0.003

CCDM

Ccdm	18341-4218	RComp		Comp	A	Note1
Note2		Discov num		DRAs	1.77	DDEs	19.5
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.3	Sp	A0	PmNote	*
PmRA	13	PmDE	4	Dm number	-4213388	Cat1	CD
Name2	229116	Cat2	SAO	HD	170961	M HD
ADS BDS		M ADS BDS		N IDS		IDS	18270S4222A
HIC

18341-4218 B

Componente originario normalizzato	AB		Coord arcsec 2000	183407.83-421741.6		Mag	11.8		Calc delta mag	2.2
Calc coord	yes

CCDM

Ccdm	18341-4218	RComp		Comp	B	Note1
Note2		Discov num	DON 910	DRAs		DDEs
R dRAs		Year	1931	Theta	144	Rho	0.6
Obs	2	Vmag	11.5	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	18270S4222B
HIC