19506-1917 HJ 2900 (HD 187412)

19^h 50^m 33.08^s -19° 17' 07.3" P.A. 63.00 sep 19.4 mag 9.60,11.80 Sp K0III

Coord 2000	19506-1917	Discov num	HJ 2900	Comp		Coord arcsec 2000	19 50 33.08 -19 17 07.3
Date first	1830	Date last	2016	Obs	12
Pa first	49	Pa last	63.2	P.A. Now (θ)	63.2°
Sep first	10.0	Sep last	19.389	Sep. Now (ρ)	19.389"
Mag pri	9.60	Mag sec	11.80	delta mag (ΔM)	2.2	Spectral class	K0III (yellow-orange)
Pri motion ra	-003	Sec motion ra	+013
Pri motion dec	+016	Sec motion dec	+009
Notes	N (See Notes)

rPM=1.073

This double is not physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 187412		Constellation	Sagittarius		SAO	163031		Tycho2	6320-00840-1
Gaia DR2	6868760709087951232		HD	187412

WDS 19506-1917 HJ 2900 (HD 187412) : NOTES

discov_num	notes	refcode
HJ 2900	BDS 9702, HJ 1446 probably same star (van den Bos).	B__1949c

REFERENCES

refcode	metd	author	reference
B__1949c	Ma j	van den Bos, W.H.	1949CiUO..108..312V
B__1949c		Union Obs. Johannesburg Circ. 108, 312, 1949

DISCOVERER

idgroup	discov	author
1	HJ	Herschel, J.F.W.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19506-1917	HJ 2900		1999	8	63	19.1	9.60	11.80	K0III	N D	195033.08-191707.3
19506-1917	HJ 2900		2010	10	63	19.3	9.60	11.80	K0III	N	195033.08-191707.3
19506-1917	HJ 2900		2016	11	64	19.4	9.60	11.80	K0III	N	195033.08-191707.3

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

WDS 19506-1917 HJ 2900 (HD 187412) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19506-1917 HJ 2900 (HD 187412) : MEASURES

No records found.

WDS 19506-1917 (HD 187412) : VIRTUAL EYEPIECE

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WDS 19506-1917 (HD 187412) : ALADIN DSS IMAGE @ 19^h 50^m 33.08^s -19° 17' 07.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 19506-1917 HJ 2900 (HD 187412) : 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		19506-1917	HJ 2900		63	19.4	1
Show		19492-1902	B 451		54	0.5	25
Show		19508-1846	KPP4172		332	1.9	32
Show		19536-1912	DAM 183		248	7.0	44
Show		19546-1914	HJ 1446		54	16.9	48
Show		19491-2000	RST5144		124	2.9	48
Show		19541-1930	ARA 793		246	11.7	52
Show		19471-1953	BU 146		78	0.5	61
Show		19512-1816	UC 4041		315	13.9	63
Show		19472-2003	BRT1555		247	3.9	67
Show		19512-2023	SHN 240		-1	0.3	68
Show		19548-1949	GWP2907		141	108.3	68
Show		19480-1819	UC 4025		124	76.3	69
Show		19512-2030	TDT1804		242	0.5	74
Show		19462-1959	TDT1723		14	0.6	75
Show		19501-2034	TDT1788		228	0.6	77
Show		19537-2022	UC 4046		106	64.0	79
Show		19444-1939	ARA 792		227	8.8	90
Show		19552-2021	HLD 36		219	1.3	92
Show		19445-1829	AAQ 11		351	5.7	94
Show		19487-1747	GWP2897		204	26.3	94
Show		19448-1832	RST3237		171	3.2	94
Show		19440-1947	BHA 33		187	11.2	98
Show		19574-1907	TDT1875		255	0.6	98
Show		19522-1741	UC 4044		278	26.8	100
Show		19536-2048	LDS4822		267	45.3	100
Show		19535-2054	ARA1572		255	9.0	106
Show		19480-2057	HDS2815		19	0.2	107
Show		19448-2029	DON 965	AB	241	2.8	107
Show		19448-2029	DON 965	AC	208	4.8	107
Show		19448-2029	HJ 2890	AD	280	30.7	107
Show		19448-2029	HJ 2890	AE	348	30.0	107
Show		19567-2029	DON 973		348	4.3	113
Show		19441-2027	BHA 34		108	6.5	115
Show		19430-1957	WSP 67	AB	54	4.5	115
Show		19430-1957	WSP 67	AC	69	6.0	115
Show		19430-1957	WSP 67	AD	153	18.4	115
Show		19430-1957	WSP 67	AE	330	14.5	115
Show		19430-1957	WSP 67	AF	316	23.5	115
Show		19446-2039	ARA1198		72	14.7	118
Show		19438-2028	UC 4014		52	45.0	119
Show		19431-2023	RST3234		158	1.2	125
Show		19559-2103	ARA1573		207	8.9	131
Show		19452-1729	GWP2887		229	298.5	132
Show		19597-1940	LDS4827		253	15.1	132
Show		19585-1723	HJ 1454		233	15.8	134
Show		19459-2113	ARA1571		332	15.4	134
Show		19531-2126	HJ 2902		31	16.2	134
Show		19488-2129	TDS1016		270	0.8	134
Show		19428-2034	ARA1195		186	12.5	134
Show		19598-1852	J 1767		173	7.6	135

WDS 19506-1917 : COMPONENTS

	A
B	pa=61.8° sep=18.53"

19506-1917 A

Componente originario normalizzato	AB	Name	HD 187412	Coord arcsec 2000	195033.08-191707.3	Mag	9.6
Spectral class	K0III (yellow-orange)	PmRA	-3.00	PmDE	16.0	SAO	163031
Tycho2	6320-00840-1	HD	187412	DM	BD-19 5622

Tycho2

Tycho2	6320-00840-1	Pflag		RAmdeg	297.63784267	DEmdeg	-19.28536693
PmRA	-2.1	PmDE	13.2	E RAmdeg	16	E DEmdeg	19
E pmRA	1.6	E pmDE	1.7	EpRAm	1988.27	EpDEm	1986.39
Num	7	Q RAmdeg	0.9	Q DEmdeg	0.8	Q pmRA	1.0
Q pmDE	0.8	BTmag	10.806	E BTmag	0.046	VTmag	9.598
E VTmag	0.024	Prox	999	TYC	T	HIP
CCDM		RAdeg	297.63784806	DEdeg	-19.28539972	EpRA 1990	1.77
EpDE 1990	1.70	E RAdeg	17.3	E DEdeg	22.1	Posflg
Corr	-0.2

SAO

SAO	163031	DelFlag		RA1950		PmRA1950	0.0008
DE1950		PmDE1950	0.006	Vmag	9.1	SpType	K0
Double code		Source	22	CatNum	8504	DM	BD-19 5622
DMcomp		BDsup		HD	187412	M HD	0
GC		RA1950rad	5.18206379	DE1950rad	-0.33882417	PmRA2000	0.0009
PmDE2000	0.005

CCDM

Ccdm	19506-1917	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.89	DDEs	-7.9
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.1	Sp	K0	PmNote	*
PmRA	11	PmDE	6	Dm number	-19 5622	Cat1	BD
Name2	163031	Cat2	SAO	HD	187412	M HD
ADS BDS	B 9642	M ADS BDS		N IDS		IDS	19447S1932A
HIC

19506-1917 B

Componente originario normalizzato	AB		Coord arcsec 2000	195034.23-191658.6		Mag	11.8		PmRA	13.00
PmDE	9.0		Calc delta mag	2.2		Calc coord	yes

CCDM

Ccdm	19506-1917	RComp		Comp	B	Note1
Note2		Discov num	HJ 2900	DRAs		DDEs
R dRAs		Year	1905	Theta	058	Rho	18.9
Obs	5	Vmag	11.3	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	B 9642	M ADS BDS	N	N IDS		IDS	19447S1932B
HIC