21137-1249 OCC 974 (HD 202021)

21^h 13^m 39.10^s -12° 49' 25.5" P.A. -1.00 sep 0.2 mag 9.60,9.60 Sp A3III

Coord 2000	21137-1249	Discov num	OCC 974	Comp		Coord arcsec 2000	21 13 39.10 -12 49 25.5
Date first	1996	Date last	1996	Obs	0
Pa first	-1	Pa last	-1	P.A. Now (θ)	-1
Sep first	0.2	Sep last	0.2	Sep. Now (ρ)	0.2"
Mag pri	9.60	Mag sec	9.60	delta mag (ΔM)	0	Spectral class	A3III (white)
Pri motion ra	+019	Sec motion ra
Pri motion dec	+005	Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 202021		Constellation	Aquarius		SAO	164225		Tycho2	5780-00595-1
Gaia DR2	6885718266463914496		HD	202021

WDS 21137-1249 OCC 974 (HD 202021) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
OCC1971	O j	Taylor, G.E., O'Leary, B., van Fladern, T.C. Bartholdi, P., Owen, F.,	1971Natur.234..405T
OCC1971		Hubbard, W.B., Smith, B.A., Smith, S.A., Fallon, F.W. Devinney, E.J. & Oliver, J.
OCC1971		Nature 234, 405, 1971 (also summarized in OCC2010)
OCC1972	O j	Hubbard, W.B. & van Flandern, T.C.	1972AJ.....77...65H
OCC1972		AJ 77, 65, 1972
OCC1976	O j	Taylor, G.E., Walker, E.N., Quintanilla, A.R. & Lopez de Coca, M.P.	1976A&A....50..121T
OCC1976		A&A 50, 121, 1976 (also summarized in OCC2010)
OCC1990	O j	Dunham, D.W., Dunham, J.B., Binzel, R.P., Evans, D.S., Freuh, M., Henry, G.W.,	1990AJ.....99.1636D
OCC1990		A'Hearn, M.A., Schnurr, R., Betts, R., Haynes, H., Orcutt, R., Bowell, E., et al.
OCC1990		AJ 99, 1636, 1990 (also summarized in OCC2010)
OCC1993	O j	Sato, I., Soma, M. & Hirose, T.	1993AJ....105.1553S
OCC1993		AJ 105, 1553, 1993 (also summarized in OCC2010)
OCC2001	O -	Vasundhara, R., Jayakumar, K., Velu, C., Appakutty, M., Paranjpye, A.,	2001BASI...29..577V
OCC2001		Kulkarni, H., Nitsure, P., Prabhunne, M. & Shah, K.
OCC2001		Bull. Astr. Soc. India 29, 577, 2001 (also summarized in OCC2010)
OCC2002	O -	Occult. Doubles Cat., D. Dunham, ed.	.
OCC2002		http://www.lunar-occultations.com/iota/iotandx.htm
OCC2008	O j	Ling, A.	2008JRASC.102...15L
OCC2008		JRASC 102, 15, 2008
OCC2009	O u	Herald, D. and Sandy, R.	2009JDSO....5..208H
OCC2009		JDSO 5, 208, 2009
OCC2009b	O j	Lin, C.-L., Zhang, Z.-W., Chen, W.P., King, S.-K., Lin, H.-C., Bianco, F.B.,	2009PASP..121..359L
OCC2009b		Lehner, M.J., Coehlo, N., Wang, J.-H., Mondal, S., Alcock, C., Axelrod, T., et al.
OCC2009b		PASP 121, 359, 2009 (also summarized in OCC2010)
OCC2010	O u	Herald, D., Boyle, R., Dunham, D., Hirose, T., Maley, P., Timerson, B., Farris,	2010JDSO....6...88H
OCC2010		T., Frappa, E., Lecacheux, J., Hayamizu, T., Kozubal, M., Nolthenius, R., et al.
OCC2010		JDSO 6, 88, 2010
OCC2010b	O u	Herald, D., Loader, B. & Parker, S.	2010JDSO....6..150H
OCC2010b		JDSO 6, 150, 2010
OCC2010c	O -	Herald, D., Kashiwagura, M., Loader, B., Messner, S., Sandy, R. & Togashi, H.	2010JDSO....6..152H
OCC2010c		JDSO 6, 152, 2010
OCC2010d	O u	Loader, B., Asada, Y., Breit, D., Bradshaw, J., Gault, D., Herald, D., Iverson,	2010JDSO....6..176L
OCC2010d		E., Ishida, M., Karasaki, H., Kashiwagura, M., Miyashita, K., Messner, S., et al.
OCC2010d		JDSO 6, 176, 2010
OCC2011	O u	George, T., Timerson, B., Coughlin, K. & Fleishman, R.	2011JDSO....7..129G
OCC2011		JDSO 7, 129, 2011
OCC2011b	O u	Loader, B. Bradshaw, J., Breit, D., Gault, D., George, T., Herald, D., Iverson,	2011JDSO....7..159L
OCC2011b		E., Ishida, M., Karasaki, H., Kashiwagura, M., Kenmotsu, K., Lowe, D., et al.
OCC2011b		JDSO 7, 159, 2011
OCC2011c	O u	George, T., Timerson, B., Cooke, B., Degenhardt, S., Dunham, D.W., Messner, S.,	2011JDSO....7..169G
OCC2011c		Suggs, R., Venable, R. & Warren, W.H.
OCC2011c		JDSO 7, 169, 2011
OCC2011d	O -	George, T., Timerson, B., Beard, T., Blank, T., Dantowitz, R., Davis, J.,	2011JDSO....7..175G
OCC2011d		di Cicco, D., Dunham, D.W., Hill, M., Sliski, A. & Sumner, R.
OCC2011d		JDSO 7, 175, 2011
OCC2011e	O j	Bulder, H., Loader, B., Herald, D., Messner, S., Ling, A., Raab, H.,	...................
OCC2011e		Culbertson, B., Black, S., Ishida, M., Ohno, T., & Miyashita, K.
OCC2011e		J. for Occultation Astron., #3, Jul-Sep 2011 (some data also in OCC2008)
OCC2012a	O j	George, T., Timerson, B., Degenhardt, S., Bracken, C., Cadmus, R., Carcich, A.,	2012JDSO....8..306G
OCC2012a		Centala, J., Modic, R., & Slauson, D.
OCC2012a		JDSO 8, 306, 2012
OCC2012b	O u	Loader, B., Asada, Y., Bradshaw, J., Breit, D., Fuertes, J., Gault, D., George,T.,	2012JDSO....8..313L
OCC2012b		Graham, P., Herald, D., Holenstein, B., Iverson, E., Ishida, M., et al.
OCC2012b		JDSO 8, 313, 2012
OCC2013a	O -	George, T., Timerson, B., Brooks, J., Conrad, S., Dunham, J.B., Dunham, D.W.,	2013JDSO....9...88G
OCC2013a		Jones,R., Lipka, T.R., Thomas, W., Warren, W.J., Jr., Wasson, R. & Wisniewski, J.
OCC2013a		JDSO 9, 88, 2013
OCC2013b	O j	Giacchini, B.L., Timerson, B., George, T., Degenhardt, S. & Herald, D.	2013JDSO....9..130G
OCC2013b		JDSO 9, 130, 2013
OCC2013c	O j	Casas, R., Juan, J., Naves, R., Perello, C., Rovira, J., Selva, A. & Schnabel, C.	2013JDSO....9..183C
OCC2013c		JDSO 9, 183, 2013
OCC2013d	O j	Herald, D., Talbot, J., Bradshaw, J., Broughton, J., Hanna, W. & Watson, D.	2013JDSO....9..226H
OCC2013d		JDSO 9, 226, 2013
OCC2013e	O -	Herald, D.	2013JDSO....9..274H
OCC2013e		JDSO 9, 274, 2013
OCC2014a	O -	Loader, B.	2014JDSO...10....2L
OCC2014a		JDSO 10, 2, 2014
OCC2014b	O -	Gault, D.	2014JDSO...10....4G
OCC2014b		JDSO 10, 4, 2014
OCC2014c	O -	Herald, D., Talbot, J., Chad, C., Broughton, J. & Anderson, P.	2014JDSO...10...29H
OCC2014c		JDSO 10, 29, 2014
OCC2014d	O j	Herald, D., Talbot, J. & Kerr, S.	2014JDSO...10..107H
OCC2014d		JDSO 10, 107, 2014
OCC2014e	O u	Loader, B., Bradshaw, J., Breit, D., Edens, E., Forbes, M., Gault, D., George, T.,	2014JDSO...10..150L
OCC2014e		Haymes, T., Herald, D., Holenstein, B., Ito, T., Iverson, E., et al.
OCC2014e		JDSO 10, 150, 2014
OCC2014f	O -	Soma, M., Hayamizu, T., Ishida, M., Owada, M., Ida, M., Aikawa, R., Hashimoto, A.,	2014JDSO...10..240S
OCC2014f		Horaguchi, T., Kitazaki, K., Uchiyama, S., Uehara, S., Yaeza, A., et al.
OCC2014f		JDSO 10, 240, 2014
OCC2016a	O j	Loader, B., Asai, A., Bardecker, J., Bradshaw, J., Breit, D., Buettner, D.,	2016JDSO...12..143L
OCC2016a		Chad, C., Denyer, P., Edens, E., Forbes, M., Gault, D., George, T., et al.
OCC2016a		JDSO 12, 143, 2016
OCC2016b	O -	Gault, D. & Herald, D.	2016JDSO...12..556G
OCC2016b		JDSO 12, 556, 2016
OCC2017a	O j	Loader, B., Anderson, P., Asai, A., Bradshaw, J., Breit, D., Forbes, M.,	2017JDSO...13..585L
OCC2017a		Gault, D., George, T., Haymes, T., Herald, D., Ishida, M., Kerr, S., et al.
OCC2017a		JDSO 13, 585, 2016
OCC2018a	O j	Timerson, B., George, T., Blank, T., Maley, P., Messner, S. & Moore, J.	2018JDSO...14..395T
OCC2018a		JDSO 14, 395, 2018	.
OCC2019a	O j	Timerson, B., George, T., Bean, J., Blank, T., Bardecker, J., Dunham, D., Dunham,	2019JDSO...15..162T
OCC2019a		J., Gimple, B., Maley, P., Anthony, S., Wiesenborn, C., Hunt, T., Sumner, R. &
OCC2019a		Thomas, W.
OCC2019a		JDSO 15, 162, 2019	.
OCC2019b	O j	Hirose, T., Ida, M., Yamamura, H., Uchiyama, S., Hashimoto, A., Aikawa, R.,	2019JDSO...15..268H
OCC2019b		Terakubo, K., Sato, M. & Shima, K.
OCC2019b		JDSO 15, 268, 2019	.
OCC2019c	O j	Loader, B., Asada, Y., Asai, A., Bardecker, J., Bourgeois, J., Bradshaw, J., Chad,	2019JDSO...15..503L
OCC2019c		C., Ellington, C., Gault, D., Giacchini, B., Haymes, T., Herald, D., Ishida, M.,
OCC2019c		Iverson, E., Kerr, S., Manek, J., McKay, G., Messner, S., Pratt, A., Sandy, R.,
OCC2019c		Watanabe, H., Yamamura, H. & Yoshida, H.
OCC2019c		JDSO 15, 503, 2019	.
OCC2019d	O j	Giacchini, B.L., George, T., Spagnotto, J. & Wilberger, A.J.	2019JDSO...15..554G
OCC2019d		JDSO 15, 554, 2019	.
OCC2020a	O -	Perello, C., Frappa, E., Janik, T., Kattentidt, B., Polak, J., Rottenborn, M. &	2020JDSO...16...87P
OCC2020a		Selva, A.
OCC2020a		JDSO 16, 87, 2020
OCC2020b	O	Herald, D.	2020JDSO...16..113H
OCC2020b		JDSO 16, 105, 2020
OCC2020c	O	Bardecker, J. & Messner, S.	2020JDSO...16..405B
OCC2020c		JDSO 16, 405, 2020
OCC2020d	O	Gault, D., Barry, T., Nosworthy, P., Hanna, W., Messner, S., Oesper, D., Dunford,	2020JDSO...16..440G
OCC2020d		R., Trank, R., Preston, S. & Herald, D.
OCC2020d		JDSO 16, 440, 2020
OCC2020e	O	Boutet, M. & Sanchez, J.	2020JDSO...16..483B
OCC2020e		JDSO 16, 483, 2020
OCC2021a	O	Hayamizu, T., Soma, M., Watanabe, Ha., Asai, A., Watanable, Hi. & Nohara, H.	2021JDSO...17..131H
OCC2021a		JDSO 17, 131, 2021
OCC2021b	O	Frappa, E., Zeleny, P., Baruffetti, P., Bendjeddou, A., Bigi, M., Bouazara, O.,	2021JDSO...17..230F
OCC2021b		Gacem, A., Khenifer, H.M., Mokhtari, L., Nosal, P., Rayane, H., Selimi, T.E.M.,
OCC2021b		Sposetti, S. & Aissa, D.B.
OCC2021b		JDSO 17, 230, 2021
OCC2022a	O	Hayamizu, T., Soma, M., Watanabe, Hi., Asai, A., Watanable, Ha., Akira, A.,	2022JDSO...18...61H
OCC2022a		Ida, M., Uchiyama, S., Nagata, T., Yamamura, H., Owada, M. & Yamashita, M.
OCC2022a		JDSO 18, 61, 2022
OCC2022b	O j	Andersson, S.	2022JDSO...18..207A
OCC2022b		JDSO 18, 207, 2022
OCC2022c	O j	Klos, O.	2022JDSO...18..210K
OCC2022c		JDSO 18, 210, 2022
OCC2023a	O j	Bardecker, J.	2023JDSO...19...59B
OCC2023a		JDSO 19, 59, 2023

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974			0			9.60	9.60			211339.10-124925.5
21137-1249	OCC 974		1996	0	-1	0.2	9.60	9.60			211339.10-124925.5

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

WDS 21137-1249 OCC 974 (HD 202021) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21137-1249 OCC 974 (HD 202021) : MEASURES

No records found.

WDS 21137-1249 (HD 202021) : 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 21137-1249 (HD 202021) : ALADIN DSS IMAGE @ 21^h 13^m 39.10^s -12° 49' 25.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 21137-1249 OCC 974 (HD 202021) : 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		21137-1249	OCC 974		-1	0.2	1
Show		21133-1246	GWP3046		353	23.7	7
Show		21131-1247	OCC 973		-1	0.1	9
Show		21152-1305	OCC 972		-1	0.1	28
Show		21160-1312	YSC 118		252	0.5	42
Show		21145-1207	BRT2780		347	3.4	45
Show		21103-1304	CBL 181		246	17.1	52
Show		21151-1340	KPP3124		108	6.2	55
Show		21141-1155	TDT2845		64	0.5	55
Show		21177-1252	KPP 489		3	3.9	59
Show		21176-1231	KPP2572		167	23.3	61
Show		21124-1149	OCC 403		74	0.0	63
Show		21152-1145	LDS1479		242	2.0	69
Show		21130-1133	VOU 24	AB	173	0.2	77
Show		21130-1133	RST4077	AC	223	2.0	77
Show		21192-1247	KPP4232		259	2.2	81
Show		21083-1222	TDT2779		95	0.7	83
Show		21115-1132	VOU 30		149	0.2	84
Show		21079-1211	HU 84		324	4.7	93
Show		21101-1405	LDS5918		351	312.3	94
Show		21070-1241	RST4693		51	0.3	99
Show		21155-1424	OCC 589		-1	0.2	99
Show		21096-1412	TDT2794		261	0.4	101
Show		21202-1330	HDS3037		157	0.3	104
Show		21096-1122	TOK 633		313	999.9	106
Show		21191-1400	UC 4440		42	15.4	107
Show		21108-1429	FOX 257		355	12.7	108
Show		21109-1429	FOX 258		40	9.1	108
Show		21080-1141	HO 149		300	0.8	108
Show		21072-1355	STF2752	AB	186	3.7	116
Show		21072-1355	BU 157	AC	285	33.9	116
Show		21072-1355	KPR 5	AD	46	225.0	116
Show		21214-1219	HJ 280		211	47.8	118
Show		21100-1435	TDT2799		153	1.4	119
Show		21138-1046	OCC 420		-1	0.0	124
Show		21223-1213	GWP3053		165	26.9	132
Show		21124-1500	H 1 47		309	4.2	132
Show		21200-1113	BRT2781		134	5.3	135
Show		21229-1246	OCC 24		-1	0.1	137
Show		21141-1035	J 1404		237	7.1	137
Show		21208-1121	OCC 946		-1	0.0	138
Show		21165-1036	UC 4424		295	11.7	140
Show		21154-1508	GWP3049		298	23.2	141
Show		21193-1055	ZIE 14		76	4.4	142
Show		21074-1057	CVR 887		309	11.0	146
Show		21084-1454	FOX 256		280	16.4	147
Show		21180-1038	GWP3051		23	13.1	147
Show		21154-1021	STF2776	AB	52	83.5	151
Show		21154-1021	STF2776	BC	338	5.9	152
Show		21242-1253	HJ 5517		312	51.3	155
Show		21203-1048	HU 86	AB	240	4.3	156

WDS 21137-1249 : COMPONENTS

	A
B	pa=0.0° sep=0.00"

21137-1249 A

Componente originario normalizzato	AB	Name	HD 202021	Coord arcsec 2000	211339.10-124925.5	Mag	9.6
Spectral class	A3III (white)	PmRA	19.00	PmDE	5.0	SAO	164225
Tycho2	5780-00595-1	HD	202021	DM	BD-13 5878

Tycho2

Tycho2	5780-00595-1	Pflag		RAmdeg	318.41292961	DEmdeg	-12.82376732
PmRA	18.6	PmDE	5.4	E RAmdeg	10	E DEmdeg	15
E pmRA	1.1	E pmDE	1.1	EpRAm	1989.92	EpDEm	1986.47
Num	11	Q RAmdeg	1.5	Q DEmdeg	0.9	Q pmRA	1.5
Q pmDE	0.9	BTmag	9.650	E BTmag	0.025	VTmag	9.429
E VTmag	0.024	Prox	663	TYC	T	HIP
CCDM		RAdeg	318.41288500	DEdeg	-12.82378000	EpRA 1990	1.79
EpDE 1990	1.44	E RAdeg	10.4	E DEdeg	17.3	Posflg
Corr	-0.1

SAO

SAO	164225	DelFlag		RA1950		PmRA1950	0.0036
DE1950		PmDE1950	0.031	Vmag	8.8	SpType	A3
Double code		Source	20	CatNum	7521	DM	BD-13 5878
DMcomp		BDsup		HD	202021	M HD	0
GC		RA1950rad	5.54542281	DE1950rad	-0.22743197	PmRA2000	0.0038
PmDE2000	0.029

21137-1249 B

Componente originario normalizzato

Coord arcsec 2000

211339.10-124925.5

Mag

9.6

Calc coord

yes