21161+1606 BU 1261 (HD 202531)

21^h 16^m 07.68^s +16° 06' 12.4" P.A. 151.00 sep 1.8 mag 9.00,10.20 Sp A2

Coord 2000	21161+1606	Discov num	BU 1261	Comp		Coord arcsec 2000	21 16 07.68 +16 06 12.4
Date first	1886	Date last	2016	Obs	30
Pa first	152	Pa last	150.5	P.A. Now (θ)	150.5°
Sep first	1.4	Sep last	1.791	Sep. Now (ρ)	1.791"
Mag pri	9.00	Mag sec	10.20	delta mag (ΔM)	1.2	Spectral class	A2 (white)
Pri motion ra	+017	Sec motion ra
Pri motion dec	+011	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 202531		Constellation	Pegasus		Tycho2	1650-00985-1		Gaia DR2	1784576817208462208
HD	202531

WDS 21161+1606 BU 1261 (HD 202531) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Bu_1873a	Ma -	Burnham, S.W. (BU 1 - 81)	1873MNRAS..33..351B
Bu_1873a		MNRAS 33, 351, 1873
Bu_1873b	Ma -	Burnham, S.W. (BU 82 - 106)	1873MNRAS..33..437B
Bu_1873b		MNRAS 33, 437, 1873
Bu_1873c	-	Burnham, S.W.	1873MNRAS..33..567B
Bu_1873c		MNRAS 33, 567, 1873
Bu_1873d	Ma -	Burnham, S.W. (BU 107 - 182)	1873MNRAS..34...59B
Bu_1873d		MNRAS 34, 59, 1873
Bu_1874a	Ma -	Burnham, S.W. (BU 183 - 229)	1874MNRAS..34..382B
Bu_1874a		MNRAS 34, 382, 1874
Bu_1874b	Ma -	Burnham, S.W. (BU 230 - 300)	1874MNRAS..35...31B
Bu_1874b		MNRAS 35, 31, 1874
Bu_1874c	-	Burnham, S.W.	1874MNRAS..34..370B
Bu_1874c		MNRAS 34, 370, 1874
Bu_1874d	Ma -	Burnham, S.W.	1874MNRAS..34..393B
Bu_1874d		MNRAS 34, 393, 1874
Bu_1874e	Ma -	Burnham, S.W.	1874MNRAS..35...28B
Bu_1874e		MNRAS 35, 28, 1874
Bu_1875	Ma -	Burnham, S.W. (BU 301 - 390)	1875AN.....86..337B
Bu_1875		AN 86, 337, 1875
Bu_1876	Ma -	Burnham, S.W. (BU 391 - 436)	1876AN.....88..225B
Bu_1876		AN 88, 225, 1876
Bu_1876b	-	Burnham, S.W.	1876MNRAS..36...99B
Bu_1876b		MNRAS 36, 99, 1876
Bu_1876c	-	Burnham, S.W.	1876MNRAS..36..331B
Bu_1876c		MNRAS 36, 331, 1876 (no new data)
Bu_1877	Ma -	Burnham, S.W. (BU 453 - 482)	1877MNRAS..38...78B
Bu_1877		MNRAS 38, 78, 1877
Bu_1878a	Ma -	Burnham, S.W.	1878MNRAS..38..408B
Bu_1878a		MNRAS 38, 408, 1878
Bu_1878b	-	Burnham, S.W.	1878MNRAS..38..476B
Bu_1878b		MNRAS 38, 476, 1878
Bu_1878c	-	Burnham, S.W.	1878MNRAS..38..478B
Bu_1878c		MNRAS 38, 478, 1878
Bu_1878d	Ma j	Burnham, S.W.	1878AN.....92..235B
Bu_1878d		AN 92, 235, 1878
Bu_1879	Ma j	Burnham, S.W.	1879MmRAS..44..141B
Bu_1879		MemRAS 44, 141, 1879
Bu_1879B	Ma -	Burnham, S.W.	1879Obs.....3...20G
Bu_1879B		cited by Gledhill (Obs 3, 20, 1879)
Bu_1879C	Ma -	Burnham, S.W.	1879Obs.....3..142G
Bu_1879C		cited by Gledhill (Obs 3, 142, 1879)
Bu_1879d	Ma -	Burnham, S.W.	1879Obs.....3...92B
Bu_1879d		Obs 3, 92, 1879
Bu_1879e	Ma -	Burnham, S.W.	1879MNRAS..40...99B
Bu_1879e		MNRAS 40, 99, 1879
Bu_1880A	Ma -	Burnham, S.W.	1880Obs.....3..508G
Bu_1880A		cited by Gledhill (Obs 3, 508, 1880)
Bu_1880C	Ma -	Burnham, S.W.	1880Obs.....3..314G
Bu_1880C		cited by Gledhill (Obs 3, 314, 1880)
Bu_1880D	Ma -	Burnham, S.W.	1880Obs.....3..352G
Bu_1880D		cited by Gledhill (Obs 3, 352, 1880)
Bu_1880e	Ma -	Burnham, S.W.	1880Obs.....3..408B
Bu_1880e		Obs 3, 408, 1880
Bu_1880f	Ma -	Burnham, S.W.	1880MNRAS..40..497B
Bu_1880f		MNRAS 40, 497, 1880
Bu_1880g	Ma -	Burnham, S.W.	1880MNRAS..41...33B
Bu_1880g		MNRAS 41, 33, 1880
Bu_1881	Ma j	Burnham, S.W.	1881Obs.....4...19G
Bu_1881		cited by Gledhill (Obs 4, 19, 1881)
Bu_1882a	Ma -	Burnham, S.W. (BU 776 - 863)	1882PWasO...1...91B
Bu_1882a		Pub. Washburn Obs. 1, 91, 1882
Bu_1882b	Ma -	Burnham, S.W.	1882PWasO...1..113B
Bu_1882b		Pub. Washburn Obs. 1, 113, 1882
Bu_1883	Ma j	Burnham, S.W. (BU 864 - 1025)	1883MmRAS..47..167B
Bu_1883		MemRAS 47, 167, 1883
Bu_1883b	Ma -	Burnham, S.W.	1883MNRAS..43..318B
Bu_1883b		MNRAS 43, 318, 1883
Bu_1884	Ma j	Burnham, S.W.	1884MNRAS..44..365H
Bu_1884		MNRAS 44, 365, 1884
Bu_1884b	Ma -	Burnham, S.W.	1884AN....110..133B
Bu_1884b		AN 110, 133, 1884
Bu_1884C	Ma -	Burnham, S.W.	1884AReg...22..216S
Bu_1884C		cited by Sadler (Astr. Register 22, 216, 1884)
Bu_1887	Ma -	Burnham, S.W. (BU 734 - 775)	1887PLicO...1...24B
Bu_1887		Pub. Lick Obs. 1, 24,45, 1887
Bu_1889a	Ma -	Burnham, S.W.	1889AN....122..159B
Bu_1889a		AN 122, 159, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889b	Ma -	Burnham, S.W. (BU 1026 - 1038)	1889AN....123....1B
Bu_1889b		AN 123, 1, 1889 (measures also in Bu_1894a)	1894PLicO...2..185B
Bu_1889c	Ma -	Burnham, S.W.	1889AN....123...75B
Bu_1889c		AN 123, 75, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889d	Ma -	Burnham, S.W.	1889PASP....1...36B
Bu_1889d		PASP 1, 36, 1889 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1889e	Ma j	Burnham, S.W.	1889AN....121...63B
Bu_1889e		AN 121, 63, 1889 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1889f	Ma j	Bunham, S.W.	1889MNRAS..49..418B
Bu_1889f		MNRAS 49, 418, 1889
Bu_1890a	Ma -	Burnham, S.W. (BU 1093 - 1154)	1889AN....124...49B
Bu_1890a		AN 124, 49, 1890 (measures also in Bu_1894c)	1894PLicO...2..197B
Bu_1890b	Ma -	Burnham, S.W.	1890AN....125...41B
Bu_1890b		AN 125, 41, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1890c	Ma -	Burnham, S.W.	1890PASP....2..138B
Bu_1890c		PASP 2, 138, 1890 (measures also in Bu_1894)	1894PLicO...2....3B
Bu_1891a	orb -	Burnham, S.W.	1891SidM...10..273B
Bu_1891a		Sidereal Messenger 10, 273, 1891
Bu_1891b	orb -	Burnham, S.W.	1891Obs....14..263B
Bu_1891b		Observatory 14, 263, 1891
Bu_1891c	Ma j	Burnham, S.W.	1891AN....127..289B
Bu_1891c		AN 127, 289, 1891
Bu_1892	Ma -	Burnham, S.W. (BU 1225 - 1266)	1892AN....130..257B
Bu_1892		AN 130, 257, 1892 (measures also in Bu_1894e)	1894PLicO...2..221B
Bu_1892b	Ma -	Burnham, S.W.	1892AN....130...77B
Bu_1892b		AN 130, 77, 1892
Bu_1893a	Ma -	Burnham, S.W.	1893AN....131..329B
Bu_1893a		AN 131, 329, 1893 (most measures also in Bu_1894)	1894PLicO...2.....B
Bu_1893b	orb -	Burnham, S.W.	1893MNRAS..53..478B
Bu_1893b		MNRAS 53, 478, 1893
Bu_1893c	orb -	Burnham, S.W.	1893MNRAS..54..119B
Bu_1893c		MNRAS 54, 119, 1893
Bu_1893d	orb -	Burnham, S.W.	1893AstAp..12..494B
Bu_1893d		AstAp 12, 494, 1893
Bu_1893e	orb -	Burnham, S.W.	1893AstAp..12..585B
Bu_1893e		AstAp 12, 585, 1893
Bu_1893f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1893MNRAS..53..273B
Bu_1893f		MNRAS 53, 273, 1893 (most measures also in Bu_1893a)	1893AN....131..329B
Bu_1893g	orb -	Burnham, S.W.	1893MNRAS..53..482B
Bu_1893g		MNRAS 53, 482, 1893
Bu_1894	Ma j	Burnham, S.W.	1894PLicO...2....3B
Bu_1894		Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a)	1893AN....131..329B
Bu_1894a	Ma j	Burnham, S.W. (BU 1026 - 1038)	1894PLicO...2..185B
Bu_1894a		Pub. Lick Obs. 2, 185, 1894
Bu_1894b	Ma j	Burnham, S.W. (BU 1039 - 1092)	1894PLicO...2..188B
Bu_1894b		Pub. Lick Obs. 2, 188, 1894
Bu_1894c	Ma -	Burnham, S.W. (BU 1093 - 1154)	1894PLicO...2..197B
Bu_1894c		Pub. Lick Obs. 2, 197, 1894
Bu_1894d	Ma -	Burnham, S.W. (BU 1155 - 1224)	1894PLicO...2..206B
Bu_1894d		Pub. Lick Obs. 2, 206, 1894
Bu_1894e	Ma -	Burnham, S.W. (BU 1225 - 1266)	1894PLicO...2..221B
Bu_1894e		Pub. Lick Obs. 2, 221, 1894
Bu_1894f	Ma -	Burnham, S.W. (BU 1267 - 1274)	1894PLicO...2..229B
Bu_1894f		Pub. Lick Obs. 2, 229, 1894 (all measures also in Bu_1893f)	1893MNRAS..53..273B
Bu_1894g	Ma -	Burnham, S.W.	1894PLicO...2..159B
Bu_1894g		Pub. Lick Obs. 2, 159, 1894
Bu_1898	orb -	Burnham, S.W.	1898MNRAS..59...59B
Bu_1898		MNRAS 58, 59, 1898
Bu_1900	Ma -	Burnham, S.W.	1900PYerO...1....1B
Bu_1900		Pub. Yerkes Obs. 1, 1, 1900
Bu_1902A	Ma j	Burnham, S.W.	1902AN....158..241E
Bu_1902A		cited by Espin (AN 158, 241, 1902)
Bu_1903	Ma -	Burnham, S.W.	1903PYerO...2....1B
Bu_1903		Pub. Yerkes Obs. 2, 1, 1903
Bu_1906	Ma j	Burnham, S.W.	1906QB821.B972.....
Bu_1906	+M	Burnham Double Star Cat., 1906
Bu_1906B	Ma -	Burnham, S.W.	1906MmRAS..56....1L
Bu_1906B	+orb	cited by Lewis (MemRAS 56, 1, 1906)
Bu_1907	Ma -	Burnham, S.W.	1907AN....176..129B
Bu_1907		AN 176, 129, 1907 (most data in Bu_1913)	1913QB811.B8.......
Bu_1908	Ma -	Burnham, S.W.	1908MNRAS..68..517B
Bu_1908		MNRAS 68, 517, 1908
Bu_1908A	Ma -	Burnham, S.W.	1908MNRAS..68..465B
Bu_1908A		cited by Barnard (MNRAS 68, 465, 1908)
Bu_1909	Ma -	Burnham, S.W.	1909AN....180...65B
Bu_1909		AN 180, 65, 1909 (most data in Bu_1913)	1913QB811.B8.......
Bu_1909b	Ma j	Burnham, S.W.	1909AN....182..133B
Bu_1909b		AN 182, 133, 1909
Bu_1910	Ma -	Burnham, S.W.	...................
Bu_1910		Journal Astronomique 1, no. 11, 81, 1910
Bu_1910b	Ma -	Burnham, S.W.	1910AN....185..145B
Bu_1910b		AN 185, 145, 1910 (most data in Bu_1913)	1913QB811.B8.......
Bu_1911	-	Burnham, S.W.	1911MNRAS..72..156J
Bu_1911		MNRAS 72, 156, 1911
Bu_1911b	Ma j	Burnham, S.W.	1911AN....189..385B
Bu_1911b		AN 189, 385, 1911
Bu_1913	Ma j	Burnham, S.W.	1913QB811.B8.......
Bu_1913	+Pa	Carnegie Inst. Wash. #168, 1913
Bu_1913	+T
Bu_1918	Ma j	Burnham, S.W.	1918AJ.....31..141B
Bu_1918		AJ 31, 141, 1918
Bu_1923A	Ma -	Burnham, S.W.	1923MNRAS..83..154E
Bu_1923A		cited by Espin (MNRAS 83, 154, 1923)
Bu_1927A	Ma -	Burnham, S.W.	1927sdsc.book......
Bu_1927A		cited in SDS (Southern Double Star Cat.), 1927
Bu_1932A	Ma -	Burnham, S.W.	1932QB821.A43......
Bu_1932A		cited in ADS (Aitken Double Star Cat.), 1932
Bu_1963A	Ma -	Burnham, S.W.	1963icvd.book.....J
Bu_1963A		cited in IDS (Lick Index Cat.), 1963
Bu_2002A	Ma -	Burnham, S.W.	2002yCat.1275....0D
Bu_2002A		cited in CCDM

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21161+1606	BU 1261		1999	27	148	1.7	9.00	10.20	A2		211607.68+160612.4
21161+1606	BU 1261		2016	28	151	1.8	9.00	10.20	A2		211607.68+160612.4

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

WDS 21161+1606 BU 1261 (HD 202531) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21161+1606 BU 1261 (HD 202531) : MEASURES

No records found.

WDS 21161+1606 (HD 202531) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 21161+1606 (HD 202531) : ALADIN DSS IMAGE @ 21^h 16^m 07.68^s +16° 06' 12.4"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21161+1606 BU 1261 (HD 202531) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		21161+1606	BU 1261		151	1.8
Show		21160+1600	HO 284		88	3.9	7
Show		21148+1605	NSN 742		60	1.9	20
Show		21148+1600	SMA 145		96	4.9	21
Show		21162+1629	BPM2354		11	84.5	23
Show		21176+1614	BPM2355		67	86.9	23
Show		21160+1639	BPM2353		262	20.8	34
Show		21175+1637	MAY9002		316	4.8	36
Show		21177+1636	J 850	AB	236	2.4	36
Show		21177+1636	J 850	AC	331	12.4	36
Show		21158+1642	GRV 441		39	19.0	37
Show		21177+1635	MAY9003		75	5.1	37
Show		21135+1559	HU 767		183	0.1	39
Show		21185+1541	BPMA254	AB	334	4.6	43
Show		21185+1541	BPMA254	AC	194	260.8	43
Show		21135+1604	SMA 143		8	8.7	43
Show		21185+1541	BPMA254	CD	329	5.9	44
Show		21181+1646	J 3238	AB	341	3.8	47
Show		21181+1646	J 3238	AC	210	31.0	47
Show		21162+1512	UC 4423		128	17.6	55
Show		21193+1640	BPM2358		21	97.3	58
Show		21121+1607	BPM2341		304	66.1	59
Show		21166+1505	HDS3028		20	0.1	62
Show		21133+1655	BU 681		242	2.9	64
Show		21172+1502	UC 4427		328	54.2	67
Show		21176+1711	BPM2356		47	119.4	69
Show		21167+1459	HU 961		14	2.2	69
Show		21206+1537	AG 416		350	23.7	71
Show		21114+1546	SMA 135		259	6.8	73
Show		21113+1546	SMA 134		51	6.4	73
Show		21129+1508	KPP4229		140	2.5	75
Show		21109+1615	SMA 133		333	11.6	77
Show		21133+1503	J 609		230	4.5	77
Show		21132+1500	SMA 139	AB	37	7.8	78
Show		21132+1500	SMA 139	AC	155	11.1	78
Show		21122+1511	SMA 138		274	12.1	79
Show		21126+1706	BPM2342		220	72.4	79
Show		21205+1518	UC 4447		81	32.4	80
Show		21212+1645	HJ 281	AB	334	14.1	83
Show		21108+1539	SMA 132		351	5.3	84
Show		21109+1527	DAM1260		91	56.6	85
Show		21213+1519	TDT2917		201	0.8	89
Show		21111+1659	KPP 486		334	3.9	91
Show		21106+1650	HU 367		339	0.3	92
Show		21218+1524	STJ 14		105	1.1	93
Show		21111+1704	HEI 187		255	1.2	93
Show		21216+1513	AG 417		13	35.8	95
Show		21152+1741	LDS4875		127	195.4	96
Show		21125+1727	BPMA252		173	255.4	97
Show		21228+1621	GWP3054		132	58.3	98
Show		21141+1741	BPM2349		124	51.8	100

WDS 21161+1606 : COMPONENTS

	A
B	pa=151.5° sep=1.77"

21161+1606 A

Componente originario normalizzato	AB	Name	HD 202531	Coord arcsec 2000	211607.68+160612.4	Mag	9
Spectral class	A2 (white)	PmRA	17.00	PmDE	11.0	Tycho2	1650-00985-1
HD	202531

Tycho2

Tycho2	1650-00985-1	Pflag		RAmdeg	319.03203144	DEmdeg	16.10345407
PmRA	10.7	PmDE	10.0	E RAmdeg	9	E DEmdeg	10
E pmRA	1.3	E pmDE	1.2	EpRAm	1991.02	EpDEm	1990.31
Num	8	Q RAmdeg	0.9	Q DEmdeg	1.6	Q pmRA	0.9
Q pmDE	1.6	BTmag	9.039	E BTmag	0.019	VTmag	8.867
E VTmag	0.018	Prox	999	TYC	T	HIP
CCDM		RAdeg	319.03200556	DEdeg	16.10343222	EpRA 1990	1.67
EpDE 1990	1.51	E RAdeg	8.9	E DEdeg	10.1	Posflg
Corr	-0.2

CCDM

Ccdm	21161+1606	RComp		Comp	A	Note1
Note2		Discov num		DRAs	1.63	DDEs	12.4
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	9.0	Sp	A2	PmNote	*
PmRA	5	PmDE	4	Dm number	+15 4384	Cat1	BD
Name2	+15 2373	Cat2	AGK2/3	HD	202531	M HD
ADS BDS	A14799	M ADS BDS		N IDS		IDS	21114N1541A
HIC

21161+1606 B

Componente originario normalizzato	AB		Coord arcsec 2000	211607.74+160610.8		Mag	10.2		Calc delta mag	1.2
Calc coord	yes

CCDM

Ccdm	21161+1606	RComp		Comp	B	Note1
Note2		Discov num	BU 1261	DRAs		DDEs
R dRAs		Year	1891	Theta	149	Rho	1.7
Obs	16	Vmag	10.2	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A14799	M ADS BDS		N IDS		IDS	21114N1541B
HIC