21293-1720 LEO 27 AB (HD 204472)

21^h 29^m 17.03^s -17° 20' 01.0" sep 3.4 mag 10.97,11.30 Sp F2V

Coord 2000	21293-1720	Discov num	LEO 27	Comp	AB	Coord arcsec 2000	21 29 17.03 -17 20 01.0
Date first	1917	Date last	2016	Obs	9
Pa first	0	Pa last	359.5	P.A. Now (θ)	359.5°
Sep first	3.5	Sep last	3.367	Sep. Now (ρ)	3.367"
Mag pri	10.97	Mag sec	11.30	delta mag (ΔM)	0.33	Spectral class	F2V (yellow-white)
Pri motion ra	-013	Sec motion ra	-013
Pri motion dec	-056	Sec motion dec	+063
Notes

rPM=1.85

This double is not physical.

21293-1720 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 204472		21 29 17 -17 20 01	LEO 27 AB	2016	9	0	3.4	10.97	11.30	0.33		<===
Show			21 29 17 -17 20 01	SHT 37 AC	2015	4	326	35.5	10.97	14.43	3.46
Show			21 29 17 -17 20 01	SHT 37 AD	2015	4	330	27.1	10.97	16.10	5.13

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 204472		Constellation	Capricornus		Tycho2	6365-00764-1		Gaia DR2	6834845035973718528
HD	204472

WDS 21293-1720 LEO 27 AB (HD 204472) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Leo1918	Ma -	Leonard, F.C.	1918MNRAS..78..475L
Leo1918		MNRAS 78, 475, 1918
Leo1933	Ma -	Leonard, F.C.	1933LicOB..16...90L
Leo1933		Lick Obs. Bull. 16, 90, 1933
Leo1943	Ma -	Leonard, F.C.	1943PASP...55..241L
Leo1943		PASP 55, 241, 1943
Sht1998	-	Shatsky, N.I.	1998SvAL...24..257S
Sht1998		SvAL 24, 257, 1998
Sht1999	C -	Shatsky, N.I., Sinachopoulos, D., Prado, P. & van Dessel, E.	1999A&AS..139...69S
Sht1999		A&AS 139, 69, 1999
Sht2002	A -	Shatsky, N.I. & Tokovinin, A.	2002A&A...382...92S
Sht2002		A&A 382, 92, 2002
Sht2014	-	Denisenko, D., Lipunov, V., Balanutsa, P. & Shatsky, N.	2014ATel.5788....1D
Sht2014		Astronomer's Telegram #5788 (http://www.astronomerstelegram.org/?read=5788)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21293-1720	LEO 27	AB	1999	5	360	3.3	10.97	11.30	F2V	D	212917.03-172001.0
21293-1720	LEO 27	AB	2015	7	0	3.4	10.97	11.30	F2V		212917.03-172001.0
21293-1720	LEO 27	AB	2016	9	0	3.4	10.97	11.30	F2V		212917.03-172001.0

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

WDS 21293-1720 LEO 27 AB (HD 204472) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21293-1720 LEO 27 AB (HD 204472) : MEASURES

No records found.

WDS 21293-1720 (HD 204472) : VIRTUAL EYEPIECE

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Pass over with the mouse cursor to display the catalog designation.

WDS 21293-1720 (HD 204472) : ALADIN DSS IMAGE @ 21^h 29^m 17.03^s -17° 20' 01.0"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21293-1720 LEO 27 AB (HD 204472) : 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		21293-1720	LEO 27	AB		3.4
Show		21293-1720	SHT 37	AC	326	35.5
Show		21293-1720	SHT 37	AD	330	27.1
Show		21284-1715	RST3285		242	2.9	14
Show		21278-1731	LDS4887		243	53.5	24
Show		21313-1716	RST3288		121	3.1	29
Show		21310-1740	HU 1313		224	0.7	32
Show		21285-1751	LDS 744		146	19.4	34
Show		21269-1632	KPP1601		143	12.2	59
Show		21247-1737	CVR 899		112	9.0	69
Show		21341-1716	HJ 3037		354	26.7	70
Show		21270-1824	OCC 747		-1	0.1	72
Show		21285-1836	ARA 810		219	15.9	78
Show		21237-1744	SHN 250		-1	0.0	83
Show		21251-1612	GWP3059		196	13.6	91
Show		21245-1620	SLN 90		8	7.6	91
Show		21337-1612	A 2096		15	0.9	93
Show		21332-1836	BRT1568		132	5.7	95
Show		21247-1835	HJ 3024		73	14.5	101
Show		21357-1639	FAL 72		153	9.4	102
Show		21352-1616	OCC 170		-1	0.1	107
Show		21282-1906	HJ 3029		352	19.0	108
Show		21345-1841	UC 4499	AB	293	18.7	110
Show		21345-1841	JNN 326	Aa,Ab	270	0.3	110
Show		21314-1534	RST4088		317	1.3	111
Show		21278-1911	OCC 58		-1	0.1	113
Show		21230-1605	GWP3055		236	74.4	118
Show		21314-1914	SEE 449	AB	179	2.2	119
Show		21355-1846	I 380	AB	354	1.2	125
Show		21355-1846	I 380	AC	69	42.5	125
Show		21371-1622	HJ 5282	AB	95	20.5	127
Show		21371-1622	HJ 5282	BC	10	29.7	127
Show		21211-1811	UC 4453	AB	293	18.2	128
Show		21216-1825	ARA 502		123	6.8	128
Show		21291-1932	RST3286		3	1.6	133
Show		21375-1618	HJ 5284		268	55.9	134
Show		21198-1738	DON1008		176	4.7	138
Show		21353-1915	OCC 70		-1	0.1	144
Show		21288-1450	LDS 745		81	14.3	151
Show		21281-1450	RST4085		279	1.1	152
Show		21401-1757	LDS6357		44	8.3	160
Show		21242-1948	HU 1312	AB	86	2.6	165
Show		21404-1815	DON1014		17	0.1	168
Show		21380-1913	LDS 751		355	18.9	168
Show		21286-1432	LDS1481		89	3.3	169
Show		21402-1826	COO 243		65	5.0	170
Show		21337-1444	HJ 3036		91	6.1	170
Show		21371-1928	H 6 6	AB	46	65.8	170
Show		21371-1928	BU 9024	AC	164	62.7	170
Show		21174-1746	UC 4430		14	12.3	172
Show		21223-1455	BU 1262		109	1.9	177

WDS 21293-1720 : COMPONENTS

	A	B	C
B	pa=359.5° sep=3.37"
C	pa=326.9° sep=34.99"	pa=323.7° sep=32.20"
D	pa=331.2° sep=26.81"	pa=327.4° sep=23.90"	pa=133.2° sep=8.50"

21293-1720 A

Name	HD 204472		Coord arcsec 2000	212917.03-172001.0		Mag	10.97		Spectral class	F2V (yellow-white)
PmRA	-13.00		PmDE	-56.0		Tycho2	6365-00764-1		HD	204472

Tycho2

Tycho2	6365-00764-1	Pflag		RAmdeg	322.32099021	DEmdeg	-17.33363437
PmRA	-15.6	PmDE	-29.0	E RAmdeg	51	E DEmdeg	56
E pmRA	2.3	E pmDE	2.4	EpRAm	1984.27	EpDEm	1983.52
Num	4	Q RAmdeg	0.7	Q DEmdeg	1.8	Q pmRA	0.7
Q pmDE	1.9	BTmag	11.310	E BTmag	0.085	VTmag	10.969
E VTmag	0.093	Prox	999	TYC	T	HIP
CCDM		RAdeg	322.32102833	DEdeg	-17.33356583	EpRA 1990	1.61
EpDE 1990	1.49	E RAdeg	54.2	E DEdeg	59.1	Posflg
Corr	-0.3

21293-1720 B

Coord arcsec 2000	212917.03-171957.6		Mag	11.3		PmRA	-13.00		PmDE	63.0
Calc delta mag	0.33		Calc coord	yes

21293-1720 C

Coord arcsec 2000	212915.70-171931.7		Mag	14.43		PmRA	-3.00		PmDE	-12.0
Calc delta mag	3.46		Calc coord	yes

21293-1720 D

Coord arcsec 2000	212916.13-171937.5		Mag	16.1		PmRA	-1.00		PmDE	-23.0
Calc delta mag	5.13		Calc coord	yes