18199-2222 DON 891 (HD 168308)

18^h 19^m 55.65^s -22° 22' 00.7" P.A. 78.00 sep 4.8 mag 9.75,11.00 Sp B9II

Coord 2000	18199-2222	Discov num	DON 891	Comp		Coord arcsec 2000	18 19 55.65 -22 22 00.7
Date first	1928	Date last	2015	Obs	5
Pa first	82	Pa last	77.9	P.A. Now (θ)	77.9°
Sep first	4.5	Sep last	4.795	Sep. Now (ρ)	4.795"
Mag pri	9.75	Mag sec	11.00	delta mag (ΔM)	1.25	Spectral class	B9II (blue-white)
Pri motion ra	-017	Sec motion ra	+095
Pri motion dec	-003	Sec motion dec	+001
Notes

rPM=1.18

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 168308		Constellation	Sagittarius		Tycho2	6277-00032-1		Gaia DR2	4090549427065849856
HD	168308

WDS 18199-2222 DON 891 (HD 168308) : 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
18199-2222	DON 891		1943	2	83	4.6	9.60	11.00	B9II		181956.20-222136.0
18199-2222	DON 891		1999	3	79	4.8	9.75	11.00	B9II	D	181955.65-222200.7
18199-2222	DON 891		2015	5	78	4.8	9.75	11.00	B9II		181955.65-222200.7

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WDS 18199-2222 DON 891 (HD 168308) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18199-2222 DON 891 (HD 168308) : MEASURES

No records found.

WDS 18199-2222 (HD 168308) : VIRTUAL EYEPIECE

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WDS 18199-2222 (HD 168308) : ALADIN DSS IMAGE @ 18^h 19^m 55.65^s -22° 22' 00.7"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18199-2222 DON 891 (HD 168308) : 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		18199-2222	DON 891		78	4.8
Show		18209-2216	ARA1873		97	14.1	16
Show		18197-2244	BRT1528		321	4.2	23
Show		18182-2231	ARA1869		160	6.4	25
Show		18196-2247	ARA1870		254	6.5	25
Show		18178-2220	ARA1868		112	9.9	30
Show		18220-2233	J 2208		170	6.4	32
Show		18217-2203	ARA1874		288	9.6	32
Show		18208-2257	ARA1872		77	6.9	37
Show		18226-2213	BRT1532		245	5.8	38
Show		18192-2146	ARA1527		191	13.4	39
Show		18224-2202	ARA1877		255	9.0	41
Show		18224-2201	ARA1878		264	12.4	42
Show		18223-2248	ARA1876		84	10.8	42
Show		18228-2235	ARA1880		244	10.3	42
Show		18169-2212	ARA1867		270	16.2	44
Show		18189-2304	B 2443		59	8.3	45
Show		18220-2143	ARA1528		298	16.6	49
Show		18164-2215	ARA1865		305	14.2	49
Show		18174-2148	OCC1077		-1	0.0	49
Show		18167-2240	BRT1524		239	4.1	50
Show		18185-2309	TDT 787		241	0.6	51
Show		18233-2245	BRT1533		65	1.9	51
Show		18231-2252	ARA1881		134	13.3	54
Show		18218-2309	ARA2228		195	14.0	54
Show		18237-2209	BRT1534		117	4.7	55
Show		18236-2245	ARA1884		338	13.8	56
Show		18159-2218	ARA1863		236	12.3	56
Show		18168-2259	OCC 289		-1	0.0	57
Show		18158-2220	OCC1076		-1	0.0	58
Show		18235-2252	ARA1883		216	6.5	59
Show		18163-2253	BRT1522		95	6.0	60
Show		18181-2318	BRT1526		354	4.4	62
Show		18241-2248	ARA1886	AB	64	15.2	63
Show		18241-2248	ARA1886	AC	152	7.9	63
Show		18234-2143	ARA1530		101	14.5	63
Show		18157-2158	ARA1862		289	15.3	64
Show		18190-2118	ARA1526		314	12.7	66
Show		18152-2213	OCC1075		-1	0.0	67
Show		18163-2137	BRT1523		175	4.3	68
Show		18218-2327	DON 895		141	2.2	70
Show		18189-2330	ARA2226		124	12.2	70
Show		18239-2139	BRT1536		71	3.5	70
Show		18177-2120	BRT1525		179	4.4	70
Show		18150-2236	ITF 32		12	4.7	71
Show		18236-2133	RST5112		25	0.3	72
Show		18239-2129	BRT1535		307	4.5	77
Show		18227-2328	BRT3067		29	3.3	77
Show		18175-2331	ARA2224		316	11.8	77
Show		18143-2211	BRT1521		159	3.3	79
Show		18144-2207	OCC1074		-1	0.0	79

WDS 18199-2222 : COMPONENTS

	A
B	pa=76.9° sep=4.45"

18199-2222 A

Componente originario normalizzato	AB	Name	HD 168308	Coord arcsec 2000	181955.65-222200.7	Mag	9.75
Spectral class	B9II (blue-white)	PmRA	-17.00	PmDE	-3.0	Tycho2	6277-00032-1
HD	168308

Tycho2

Tycho2	6277-00032-1	Pflag		RAmdeg	274.98191090	DEmdeg	-22.36687378
PmRA	-10.5	PmDE	-0.2	E RAmdeg	15	E DEmdeg	20
E pmRA	2.8	E pmDE	2.8	EpRAm	1991.34	EpDEm	1990.97
Num	3	Q RAmdeg	1.5	Q DEmdeg	0.8	Q pmRA	1.5
Q pmDE	0.8	BTmag	9.883	E BTmag	0.027	VTmag	9.750
E VTmag	0.031	Prox	785	TYC	T	HIP
CCDM		RAdeg	274.98193694	DEdeg	-22.36687333	EpRA 1990	1.77
EpDE 1990	1.74	E RAdeg	15.1	E DEdeg	19.5	Posflg
Corr	-0.1

18199-2222 B

Componente originario normalizzato	AB		Coord arcsec 2000	181955.96-222159.7		Mag	11		PmRA	95.00
PmDE	1.0		Calc delta mag	1.25		Calc coord	yes