20045+1638 BPM 1972 AB

20^h 04^m 27.13^s +16° 38' 10.9" P.A. 206.00 sep 37.6 mag 15.08,15.74

Coord 2000	20045+1638	Discov num	BPM1972	Comp	AB	Coord arcsec 2000	20 04 27.13 +16 38 10.9
Date first	1994	Date last	2015	Obs	8
Pa first	206	Pa last	206.1	P.A. Now (θ)	206.1°
Sep first	37.6	Sep last	37.601	Sep. Now (ρ)	37.601"
Mag pri	15.08	Mag sec	15.74	delta mag (ΔM)	0.66	Spectral class
Pri motion ra	-013	Sec motion ra	-009
Pri motion dec	-003	Sec motion dec	-013
Notes	N U (See Notes, Proper motion indicates non-physical)

rPM=0.681

This double is not physical.

20045+1638 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 04 27 +16 38 11	BPM 1972 AB	2015	8	206	37.6	15.08	15.74	0.66		<===
Show			20 04 27 +16 38 11	BPM 1973 AC	2015	8	330	98.3	15.08	15.39	0.31
Show			20 04 27 +16 38 11	BPM 1974 AD	2015	8	297	102.2	15.08	15.45	0.37

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Sagitta

Gaia DR2

1808171031090574976

WDS 20045+1638 BPM 1972 AB : NOTES

discov_num	notes	refcode
BPM1972	AB: [PM2000] 2159565 + [PM2000] 2159415.	Gvr2010
BPM1973	AC: [PM2000] 2159565 + [PM2000] 2159146.	Gvr2010
BPM1974	AD: [PM2000] 2159565 + [PM2000] 2158789.	Gvr2010

REFERENCES

refcode	metd	author	reference
Gvr2010	Pa -	Gavras, P. Sinachopoulos, D., Le Campion, J.F., & Cucourant, C.	2010A&A...521A 4G
Gvr2010	+T	A&A 521, A4, 2010
Gvr2010		(Note: mean measures from AC2000.2, CdC2000, USNO-A2.0, Yellow Sky, and M2000
Gvr2010		catalogs, spanning years ~1900-2000)

DISCOVERER

idgroup	discov	author
1	BPM	Bordeaux PM2000 catalogue (main catalog: separation < 2')

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20045+1638	BPM1972	AB	2000	2	206	37.4	15.08	15.74		NV	200427.13+163810.9
20045+1638	BPM1972	AB	2001	3	206	37.3	15.08	15.74		NV	200427.13+163810.9
20045+1638	BPM1972	AB	2015	4	207	37.7	15.08	15.74		NU	200427.13+163810.9

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

WDS 20045+1638 BPM 1972 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20045+1638 BPM 1972 AB : MEASURES

No records found.

WDS 20045+1638 : 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 20045+1638 : ALADIN DSS IMAGE @ 20^h 04^m 27.13^s +16° 38' 10.9"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20045+1638 BPM 1972 AB : 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		20045+1638	BPM1972	AB	206	37.6
Show		20045+1638	BPM1973	AC	330	98.3
Show		20045+1638	BPM1974	AD	297	102.2
Show		20036+1634	BPM1966		301	16.8	13
Show		20036+1635	SLE 678		334	13.2	14
Show		20034+1631	BPM1964		97	46.3	18
Show		20053+1654	BPM1987		213	54.4	20
Show		20049+1620	GWP2921		211	37.8	20
Show		20058+1647	BPM1995		209	82.9	22
Show		20041+1700	EGG 3	Ba,Bb	192	0.2	23
Show		20041+1700	STF2622	AB	193	6.0	23
Show		20041+1700	STF2622	AC	304	17.1	23
Show		20052+1619	SLE 681		313	13.3	24
Show		20041+1704	STT 592	AB	291	163.2	27
Show		20041+1704	STT 592	AC	335	217.0	27
Show		20041+1704	BUP 202	AD	3	89.1	27
Show		20041+1704	BUP 202	AE	51	175.0	27
Show		20041+1704	BUP 202	AF	315	142.4	27
Show		20041+1704	LIM 3	Aa,Ab	337	0.5	27
Show		20041+1704	SBN 1	Aa,Ac	95	7.1	27
Show		20041+1704	SMR 20	AI	129	132.1	27
Show		20041+1704	TNN 14	AJ	283	3.3	27
Show		20041+1704	TNN 14	AK	162	6.2	27
Show		20041+1704	TNN 14	AL	140	9.3	27
Show		20031+1656	BPM1957		81	96.1	27
Show		20040+1704	BPM1970		183	36.6	27
Show		20057+1617	BPM1992		139	118.9	28
Show		20041+1704	ENG 69	BC	24	152.0	28
Show		20041+1704	STTA202	BG	230	181.4	28
Show		20041+1704	BUP 202	CH	185	95.6	30
Show		20048+1606	J 3049	AB	269	1.8	35
Show		20048+1606	DAM 190	AC	265	10.3	35
Show		20039+1604	BPMA231		62	276.1	36
Show		20069+1630	BPM2002		284	110.9	36
Show		20064+1615	A 1667		268	4.1	37
Show		20044+1715	COU 325	AB	225	0.8	37
Show		20044+1715	GII 28	AB,C	107	3.8	37
Show		20058+1709	BPM1996		153	72.3	37
Show		20069+1649	TDT1989		215	1.7	38
Show		20070+1647	BPM2004		262	117.6	38
Show		20032+1712	BPM1960		348	93.0	39
Show		20019+1651	BPM1938		82	118.4	39
Show		20035+1715	TDT1941		165	1.1	40
Show		20024+1609	BPM1950	BC	267	49.5	40
Show		20024+1609	BPM1949	AB	20	117.2	42
Show		20054+1559	SLE 683	AB	356	9.1	42
Show		20054+1559	SLE 683	AC	5	9.6	42
Show		20020+1702	BPM1942		288	114.8	43
Show		20075+1641	J 832		86	2.9	44
Show		20048+1554	STT 397		179	46.1	45
Show		20057+1719	BPM1991		76	95.7	45

WDS 20045+1638 : COMPONENTS

	A	B	C
B	pa=205.1° sep=37.30"
C	pa=330.7° sep=97.28"	pa=345.0° sep=122.76"
D	pa=298.2° sep=98.82"	pa=318.5° sep=107.47"	pa=226.0° sep=54.81"

20045+1638 A

Coord arcsec 2000

200427.13+163810.9

Mag

15.08

PmRA

-13.00

PmDE

-3.0

20045+1638 B

Coord arcsec 2000	200426.03+163737.1		Mag	15.74		PmRA	-9.00		PmDE	-13.0
Calc delta mag	0.66		Calc coord	yes

20045+1638 C

Coord arcsec 2000	200423.81+163935.7		Mag	15.39		PmRA	-2.00		PmDE	-14.0
Calc delta mag	0.31		Calc coord	yes

20045+1638 D

Coord arcsec 2000	200421.07+163857.6		Mag	15.45		PmRA	-19.00		PmDE	-25.0
Calc delta mag	0.37		Calc coord	yes