18543-4252 DON 931 (HD 174823)

18^h 54^m 23.24^s -42° 51' 49.4" P.A. 246.00 sep 0.5 mag 9.80,11.20 Sp K1III:

Coord 2000	18543-4252	Discov num	DON 931	Comp		Coord arcsec 2000	18 54 23.24 -42 51 49.4
Date first	1931	Date last	1936	Obs	2
Pa first	249	Pa last	245.8	P.A. Now (θ)	245.8°
Sep first	0.4	Sep last	0.54	Sep. Now (ρ)	0.54"
Mag pri	9.80	Mag sec	11.20	delta mag (ΔM)	1.4	Spectral class	K1III: (yellow-orange)
Pri motion ra	+009	Sec motion ra
Pri motion dec	+001	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 174823		Constellation	Corona Austrina		Tycho2	7924-00499-1		Gaia DR2	6715306509763699712
HD	174823

WDS 18543-4252 DON 931 (HD 174823) : 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
18543-4252	DON 931		1936	2	246	0.5	9.80	11.20	K1III:		185423.24-425149.4

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WDS 18543-4252 DON 931 (HD 174823) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18543-4252 DON 931 (HD 174823) : MEASURES

No records found.

WDS 18543-4252 (HD 174823) : VIRTUAL EYEPIECE

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WDS 18543-4252 (HD 174823) : ALADIN DSS IMAGE @ 18^h 54^m 23.24^s -42° 51' 49.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18543-4252 DON 931 (HD 174823) : 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		18543-4252	DON 931		246	0.5
Show		18541-4310	BRT1081		246	3.8	19
Show		18565-4246	KPP 428		348	3.5	24
Show		18561-4230	LDS 658		258	76.1	29
Show		18508-4301	UC 3694		319	27.5	41
Show		18506-4304	BRT1080		308	5.5	44
Show		18547-4343	RSS 494		350	23.0	52
Show		18516-4337	UC 3698		114	50.9	56
Show		18508-4335	DON 926		274	0.9	59
Show		18599-4316	TDT1175		72	0.6	65
Show		18530-4143	UC 3710		97	52.0	71
Show		18565-4401	DON 935		26	1.3	74
Show		18522-4143	HDO 291	A,BC	341	36.6	74
Show		18522-4143	I 1385	BC	292	0.6	75
Show		19012-4250	UC 3761		94	46.6	75
Show		18482-4216	CPO9001		216	2.6	77
Show		18481-4330	KPP4341	BC	302	7.1	79
Show		18481-4330	KPP4341	AB	144	2.1	79
Show		18481-4330	KPP4341	AC	297	6.0	79
Show		18554-4131	BRT1082		273	2.8	82
Show		19012-4327	TDT1183		233	0.6	83
Show		18472-4315	BRT1078		302	3.2	83
Show		18468-4318	BRT1077		331	4.1	87
Show		18555-4420	UC 3726		79	19.9	90
Show		19029-4245	LDS 663		76	5.7	94
Show		19024-4219	UC 3770		141	16.6	95
Show		18583-4417	CPO 604		305	4.7	96
Show		19032-4255	TDT1201		91	0.5	98
Show		18583-4418	B 2872		301	3.8	98
Show		19027-4216	POL 7		187	2.5	99
Show		18457-4226	HDS2660		354	0.1	100
Show		19034-4238	SEE 365		256	4.3	101
Show		18463-4206	DON 922		316	8.4	101
Show		19035-4310	UC 3780	AB	71	16.6	102
Show		18599-4131	UC 3750		220	45.9	102
Show		19035-4310	KPP4394	BC	338	4.0	102
Show		18499-4422	DON 925		170	2.7	103
Show		18572-4114	UC 3736		46	53.2	104
Show		18524-4111	UC 3704		144	64.9	104
Show		19021-4151	DON 939		89	1.3	106
Show		18494-4120	TDT1073		3	0.5	108
Show		18459-4158	UC 3665		87	37.2	109
Show		19016-4407	COO 229		339	3.2	109
Show		18588-4115	TOI1061		174	0.4	109
Show		18489-4120	RST2075		96	9.5	111
Show		18455-4155	FAL 64	AB	134	11.9	114
Show		18583-4438	NZO 96		115	5.5	115
Show		18510-4104	HJ 5066		85	10.1	115
Show		18548-4054	CPO 601		246	6.1	118
Show		19054-4300	UC 3794		146	38.9	121
Show		19054-4239	CPO 608	AB	250	5.3	123

WDS 18543-4252 : COMPONENTS

	A
B	pa=238.5° sep=0.42"

18543-4252 A

Componente originario normalizzato	AB	Name	HD 174823	Coord arcsec 2000	185423.24-425149.4	Mag	9.8
Spectral class	K1III: (yellow-orange)	PmRA	9.00	PmDE	1.0	Tycho2	7924-00499-1
HD	174823

Tycho2

Tycho2	7924-00499-1	Pflag		RAmdeg	283.59682134	DEmdeg	-42.86374484
PmRA	9.1	PmDE	1.4	E RAmdeg	17	E DEmdeg	20
E pmRA	1.6	E pmDE	1.3	EpRAm	1989.73	EpDEm	1984.92
Num	4	Q RAmdeg	1.4	Q DEmdeg	0.9	Q pmRA	1.4
Q pmDE	0.9	BTmag	11.065	E BTmag	0.052	VTmag	9.558
E VTmag	0.024	Prox	999	TYC	T	HIP
CCDM		RAdeg	283.59679389	DEdeg	-42.86374861	EpRA 1990	1.79
EpDE 1990	1.76	E RAdeg	16.7	E DEdeg	21.9	Posflg
Corr	-0.1

18543-4252 B

Componente originario normalizzato	AB		Coord arcsec 2000	185423.21-425149.6		Mag	11.2		Calc delta mag	1.4
Calc coord	yes