16521-1820 DON 814

16^h 52^m 10.23^s -18° 21' 16.8" P.A. 84.00 sep 0.9 mag 11.00,11.30

Coord 2000	16521-1820	Discov num	DON 814	Comp		Coord arcsec 2000	16 52 10.23 -18 21 16.8
Date first	1932	Date last	2016	Obs	5
Pa first	80	Pa last	83.5	P.A. Now (θ)	83.5°
Sep first	0.7	Sep last	0.942	Sep. Now (ρ)	0.942"
Mag pri	11.00	Mag sec	11.30	delta mag (ΔM)	0.3	Spectral class
Pri motion ra		Sec motion ra
Pri motion dec		Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Ophiuchus

Tycho2

6222-00619-1

Gaia DR2

4132190651119418240

WDS 16521-1820 DON 814 : 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
16521-1820	DON 814		1939	3	80	0.7	11.00	11.30
16521-1820	DON 814		2015	4	83	0.9	11.00	11.30			165210.23-182116.8
16521-1820	DON 814		2016	5	84	0.9	11.00	11.30			165210.23-182116.8

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

WDS 16521-1820 DON 814 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 16521-1820 DON 814 : MEASURES

No records found.

WDS 16521-1820 : VIRTUAL EYEPIECE

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WDS 16521-1820 : ALADIN DSS IMAGE @ 16^h 52^m 10.23^s -18° 21' 16.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 16521-1820 DON 814 : 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		16521-1820	DON 814		84	0.9
Show		16523-1814	UC 3246		25	109.6	8
Show		16539-1854	DON 815	AB	221	2.7	42
Show		16539-1854	DON 815	AC	320	9.3	42
Show		16525-1921	TDT 125		137	0.6	60
Show		16523-1921	GWP2675		37	83.9	61
Show		16539-1919	B 1838		256	0.7	63
Show		16531-1716	KPP1964		118	15.5	67
Show		16490-1725	GWP2670		9	44.5	73
Show		16564-1904	GWP2680		53	20.7	74
Show		16577-1811	ARA 434		153	11.8	79
Show		16467-1847	UC 3230		314	11.4	83
Show		16561-1928	KPP4018		166	2.7	88
Show		16490-1936	HJ 4888	AB	223	13.5	88
Show		16466-1743	HU 313		320	0.3	88
Show		16509-1950	B 1830	BC	303	0.1	91
Show		16509-1950	B 1830	AB	59	0.4	91
Show		16586-1803	OL 99		128	3.0	95
Show		16571-1932	OCC 940	Ba,Bb	-1	0.0	100
Show		16571-1932	SHJ 240	AB	233	4.4	100
Show		16505-2001	UC 3240		197	45.9	103
Show		16462-1721	SKI 10		84	3.3	104
Show		16489-1649	LDS4695		25	16.3	105
Show		16475-1945	LDS 571		25	196.6	106
Show		16573-1702	UC 3260		302	24.7	108
Show		16560-1648	KUI 76		299	23.6	109
Show		16454-1915	ARA 706		92	9.0	111
Show		17002-1813	RST3059		252	5.6	116
Show		16593-1926	HDS2403		264	0.4	120
Show		17003-1854	DVG 45		233	119.9	121
Show		16534-2025	WSI 86		180	0.4	125
Show		17004-1737	ARA 244		322	7.2	126
Show		16470-2006	OCC 453		-1	0.1	129
Show		16593-1654	HU 162		197	0.7	135
Show		17006-1714	OCC1029		61	0.1	139
Show		17019-1853	OCC 40		-1	0.1	142
Show		16438-1658	UC 3218		73	25.0	146
Show		17014-1715	RST3061		211	0.3	148
Show		16523-1553	FAL 54		101	5.3	149
Show		17001-1639	HDS2406		171	0.2	154
Show		16480-1558	DEA 56		101	30.4	156
Show		16413-1804	OCC 36		-1	0.0	156
Show		17031-1904	BRT1501		167	3.6	161
Show		16545-2100	ARA1120		2	6.3	162
Show		16405-1825	OCC 512		-1	0.0	167
Show		16447-2029	ARA1119		193	6.4	167
Show		17030-1719	RST3063		162	1.1	167
Show		16585-2047	JKS 14		125	12.9	171
Show		16419-1955	KUI 73	AB	213	25.0	174
Show		16419-1955	TOK 306	AC	252	673.5	174
Show		17040-1742	RST3066		103	0.5	174

WDS 16521-1820 : COMPONENTS

	A
B	pa=83.2° sep=0.89"

16521-1820 A

Componente originario normalizzato

Coord arcsec 2000

165210.23-182116.8

Mag

16521-1820 B

Componente originario normalizzato	AB		Coord arcsec 2000	165210.29-182116.7		Mag	11.3		Tycho2	6222-00619-1
Calc delta mag	0.3		Calc coord	yes

Tycho2

Tycho2	6222-00619-1	Pflag		RAmdeg	253.04272137	DEmdeg	-18.35463650
PmRA	-13.4	PmDE	-2.0	E RAmdeg	45	E DEmdeg	62
E pmRA	2.9	E pmDE	3.2	EpRAm	1988.43	EpDEm	1985.52
Num	3	Q RAmdeg	0.9	Q DEmdeg	0.3	Q pmRA	0.9
Q pmDE	0.2	BTmag	11.870	E BTmag	0.085	VTmag	11.398
E VTmag	0.094	Prox	999	TYC	T	HIP
CCDM		RAdeg	253.04275417	DEdeg	-18.35463167	EpRA 1990	1.69
EpDE 1990	1.22	E RAdeg	45.6	E DEdeg	65.1	Posflg
Corr	0.3