20446+1642 BPM 2246 AB

20^h 44^m 34.82^s +16° 41' 35.1" P.A. 16.00 sep 90.0 mag 14.42,15.40

Coord 2000	20446+1642	Discov num	BPM2246	Comp	AB	Coord arcsec 2000	20 44 34.82 +16 41 35.1
Date first	1995	Date last	2015	Obs	7
Pa first	16	Pa last	16	P.A. Now (θ)	16°
Sep first	90.0	Sep last	89.979	Sep. Now (ρ)	89.979"
Mag pri	14.42	Mag sec	15.40	delta mag (ΔM)	0.98	Spectral class
Pri motion ra	-022	Sec motion ra	+007
Pri motion dec	-011	Sec motion dec	-002
Notes	N V (See Notes, Proper motion indicates physical)

rPM=1.234

This double is physical.

20446+1642 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 44 35 +16 41 35	BPM 2246 AB	2015	7	16	90.0	14.42	15.40	0.98		<===
Show			20 44 35 +16 41 35	BPM 2247 AC	2015	7	173	116.0	14.42	15.69	1.27

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation

Delphinus

Gaia DR2

1811221316845353728

WDS 20446+1642 BPM 2246 AB : NOTES

discov_num	notes	refcode
BPM2246	AB: [PM2000] 2383150 + [PM2000] 2383263.	Gvr2010
BPM2247	AC: [PM2000] 2383150 + [PM2000] 2383211.	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
20446+1642	BPM2246	AB	1997	2	16	90.2	14.61	15.40		NV	204434.82+164135.1
20446+1642	BPM2246	AB	2001	3	16	90.1	14.61	15.40		NV	204434.82+164135.1
20446+1642	BPM2246	AB	2015	4	16	90.0	14.42	15.40		NV	204434.82+164135.1

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

WDS 20446+1642 BPM 2246 AB : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20446+1642 BPM 2246 AB : MEASURES

No records found.

WDS 20446+1642 : VIRTUAL EYEPIECE

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

WDS 20446+1642 : ALADIN DSS IMAGE @ 20^h 44^m 34.82^s +16° 41' 35.1"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20446+1642 BPM 2246 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		20446+1642	BPM2246	AB	16	90.0	1
Show		20446+1642	BPM2247	AC	173	116.0	1
Show		20446+1635	BPM2248	AB	95	107.8	7
Show		20446+1635	BPM2249	AC	29	107.0	7
Show		20446+1635	BPM2250	BC	332	117.2	8
Show		20437+1635	BPM2237		49	108.4	15
Show		20435+1657	STF2720		177	4.0	23
Show		20463+1624	BPM2257		337	107.8	31
Show		20431+1705	BLL 51		159	56.3	33
Show		20453+1715	GWP2993		104	11.1	36
Show		20434+1712	J 845		224	4.0	36
Show		20456+1714	COU 425		327	0.7	36
Show		20446+1605	BPM2245		198	112.1	37
Show		20466+1616	BPM2261		202	69.5	40
Show		20434+1604	HJ 1564		41	11.4	41
Show		20463+1715	GWP2995		257	8.3	42
Show		20467+1607	STF2727	AB	266	8.8	46
Show		20467+1607	FYM 18	AD	323	109.4	46
Show		20448+1730	BPM2252		246	39.8	49
Show		20442+1731	BPM2241		344	107.2	50
Show		20433+1728	J 3109		245	7.8	50
Show		20432+1728	LOS 9		116	2.8	51
Show		20468+1602	BPM2264		222	107.2	51
Show		20411+1631	FMR 161		322	27.8	51
Show		20462+1554	WSI 110	Aa,Ab	343	0.0	53
Show		20462+1554	STF2725	AB	12	6.2	53
Show		20417+1716	BPM2230		15	58.6	54
Show		20415+1611	J 2319		192	7.5	56
Show		20430+1734	BPM2236		331	95.7	57
Show		20481+1616	SKF1770		223	3.4	57
Show		20485+1628	BPM2271		127	97.8	58
Show		20435+1540	GWP2990		291	26.5	64
Show		20436+1537	J 3108		196	6.3	64
Show		20481+1601	BPM2269		222	81.9	66
Show		20457+1537	BPM2255		85	72.3	68
Show		20413+1551	UC 4257		208	20.3	70
Show		20479+1732	BRT1348		123	5.7	70
Show		20444+1752	UC 4276		284	50.8	71
Show		20406+1559	BPM2225		57	22.7	71
Show		20416+1738	J 3107		119	6.0	74
Show		20408+1733	BPM2226		226	107.2	75
Show		20466+1532	J 3110		222	6.9	75
Show		20489+1558	BPM2275		143	74.7	77
Show		20409+1738	J 191		166	1.3	78
Show		20437+1800	LDS4857		128	52.4	80
Show		20485+1545	BPM2272		333	103.7	81
Show		20500+1702	UC 4303		81	18.2	81
Show		20503+1630	LDS1048	AB	151	13.7	81
Show		20503+1630	LDS1048	AC	213	1.6	81
Show		20503+1649	TDT2571		258	0.8	83
Show		20501+1707	HEI 183		25	0.5	84

WDS 20446+1642 : COMPONENTS

	A	B
B	pa=15.4° sep=89.70"
C	pa=173.4° sep=115.92"	pa=183.0° sep=201.91"

20446+1642 A

Coord arcsec 2000

204434.82+164135.1

Mag

14.42

PmRA

-22.00

PmDE

-11.0

20446+1642 B

Coord arcsec 2000	204436.47+164301.6		Mag	15.4		PmRA	7.00		PmDE	-2.0
Calc delta mag	0.98		Calc coord	yes

20446+1642 C

Coord arcsec 2000	204435.75+163940.0		Mag	15.69		PmRA	-9.00		PmDE	-14.0
Calc delta mag	1.27		Calc coord	yes