20307+2657 OPI 25 AD

20^h 30^m 46.95^s +26° 57' 34.6" P.A. 357.00 sep 103.7 mag 10.03,11.80

Coord 2000	20307+2657	Discov num	OPI 25	Comp	AD	Coord arcsec 2000	20 30 46.95 +26 57 34.6
Date first	1924	Date last	2015	Obs	9
Pa first	356	Pa last	357.1	P.A. Now (θ)	357.1°
Sep first	99.9	Sep last	103.727	Sep. Now (ρ)	103.727"
Mag pri	10.03	Mag sec	11.80	delta mag (ΔM)	1.77	Spectral class
Pri motion ra	-036	Sec motion ra	-001
Pri motion dec	-043	Sec motion dec	-006
Notes

rPM=0.908

This double is not physical.

20307+2657 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 30 47 +26 57 35	OPI 25 AB	2015	9	29	14.0	10.03	13.50	3.47
Show	HD 340458		20 30 47 +26 57 35	OPI 25 AC	2015	9	324	27.0	10.03	12.50	2.47
Show			20 30 47 +26 57 35	OPI 25 AD	2015	9	357	103.7	10.03	11.80	1.77		<===

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Vulpecula		Tycho2	2165-00677-1		Gaia DR2	1856738212032193920		HD	340458
DM	BD+26 3916

WDS 20307+2657 OPI 25 AD : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Opi1927	Ma -	Opik, E.	1927PTarO..26e...1O
Opi1927		Pub. Tartu Obs. 26, #5, 1927
Opi1932	Ma -	Opik, E.	1932PTarO..27e...1O
Opi1932		Pub. Tartu Obs. 27, #5, 1932
Opi1932B	-	Opik, E.	1932QB821.A43......
Opi1932B		cited in ADS (Aitken Double Star Cat., 1932)

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20307+2657	OPI 25	AD	1999	2	357	103.1	10.03	11.80		D	203046.95+265734.6
20307+2657	OPI 25	AD	2002	3	357	103.2	10.03	11.80		D	203046.95+265734.6
20307+2657	OPI 25	AD	2012	4	358	104.5	10.03	11.80		D	203046.95+265734.6
20307+2657	OPI 25	AD	2015	5	357	103.7	10.03	11.80			203046.95+265734.6

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

WDS 20307+2657 OPI 25 AD : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 20307+2657 OPI 25 AD : MEASURES

No records found.

WDS 20307+2657 : VIRTUAL EYEPIECE

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

WDS 20307+2657 : ALADIN DSS IMAGE @ 20^h 30^m 46.95^s +26° 57' 34.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 20307+2657 OPI 25 AD : 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		20307+2657	OPI 25	AB	29	14.0	1
Show		20307+2657	OPI 25	AC	324	27.0	1
Show		20307+2657	OPI 25	AD	357	103.7	1
Show		20302+2651	WOR 9	AB	225	0.5	11
Show		20302+2651	BUP 213	AC	318	9.7	11
Show		20302+2651	BUP 213	AD	281	93.0	11
Show		20302+2651	BUP 213	AE	93	999.9	11
Show		20302+2651	LMP 45	AF	252	43.7	11
Show		20307+2710	TDT2332		169	0.7	13
Show		20293+2700	DOO 93	AC	227	27.4	20
Show		20293+2700	TDT2319	AB	344	2.1	20
Show		20291+2700	DOO 86		210	18.7	21
Show		20324+2703	DAM 328		76	12.4	23
Show		20290+2658	A 394		286	0.7	24
Show		20328+2700	DAM 329		237	8.5	28
Show		20310+2629	STF2692	AB	163	10.1	29
Show		20310+2629	STF2692	AC	301	25.8	29
Show		20310+2629	FYM 62	AD	57	28.0	29
Show		20332+2657	COU1170		291	4.1	34
Show		20294+2729	KPP1957		36	15.5	36
Show		20299+2624	S 750		320	68.3	36
Show		20337+2701	DAM 330		143	10.8	40
Show		20292+2731	HJ 1519		234	15.6	40
Show		20324+2731	FOX 93		184	1.4	41
Show		20338+2653	DAM 331		122	4.3	41
Show		20337+2659	HJ 1536	AB	99	16.3	41
Show		20337+2659	SMH 10	AC	127	15.0	41
Show		20284+2728	COU 725		59	0.5	44
Show		20333+2727	HDS2935		113	0.5	45
Show		20288+2735	TDS1076		293	1.0	46
Show		20298+2613	BKO 585		30	2.7	47
Show		20343+2659	SMH 11		80	15.9	48
Show		20281+2624	TOI3569		236	0.3	50
Show		20298+2610	HJ 1520		326	19.2	51
Show		20332+2616	RAO 438		288	0.7	53
Show		20268+2657	J 3086		17	3.7	53
Show		20280+2739	BRT 48		265	4.2	56
Show		20275+2735	BVD 164		350	2.9	58
Show		20269+2731	RAO 432		336	0.2	62
Show		20298+2556	J 1882		115	10.1	67
Show		20256+2642	BU 1488	BC	357	2.6	70
Show		20284+2800	TDT2311		97	1.5	70
Show		20256+2642	BU 1488	AB	73	74.2	71
Show		20320+2548	STF2695		257	0.3	72
Show		20258+2726	TDT2265		264	2.5	72
Show		20253+2651	BUP 210	AB	232	68.9	74
Show		20253+2651	BUP 210	AD	94	934.4	74
Show		20253+2651	BUP 210	AE	70	448.6	74
Show		20256+2723	J 2310	AB	323	33.5	74
Show		20256+2723	J 2310	AC	328	38.0	74
Show		20256+2723	J 2310	BC	357	5.3	75

WDS 20307+2657 : COMPONENTS

	A	B	C
B	pa=26.3° sep=13.61"
C	pa=327.3° sep=26.07"	pa=295.8° sep=22.35"
D	pa=357.4° sep=103.70"	pa=353.3° sep=92.01"	pa=6.6° sep=82.21"

20307+2657 A

Coord arcsec 2000	203046.95+265734.6		Mag	10.03		Spectral class	G5 (yellow)		PmRA	-36.00
PmDE	-43.0		Tycho2	2165-00677-1		HD	340458		DM	BD+26 3916

Tycho2

Tycho2	2165-00677-1	Pflag		RAmdeg	307.69569082	DEmdeg	26.95961267
PmRA	-35.4	PmDE	-40.6	E RAmdeg	20	E DEmdeg	17
E pmRA	2.2	E pmDE	2.1	EpRAm	1989.43	EpDEm	1990.06
Num	4	Q RAmdeg	1.1	Q DEmdeg	0.5	Q pmRA	1.1
Q pmDE	0.5	BTmag	11.026	E BTmag	0.042	VTmag	10.030
E VTmag	0.027	Prox	999	TYC	T	HIP
CCDM		RAdeg	307.69578000	DEdeg	26.95970583	EpRA 1990	1.75
EpDE 1990	1.76	E RAdeg	22.0	E DEdeg	18.4	Posflg
Corr	0.0

20307+2657 B

Coord arcsec 2000	203047.40+265746.8		Mag	13.5		PmRA	5.00		PmDE	-19.0
Calc delta mag	3.47		Calc coord	yes

20307+2657 C

Coord arcsec 2000	203045.90+265756.5		Mag	12.5		PmRA	-9.00		PmDE	0.0
Calc delta mag	2.47		Calc coord	yes

20307+2657 D

Coord arcsec 2000	203046.60+265918.2		Mag	11.8		PmRA	-1.00		PmDE	-6.0
Calc delta mag	1.77		Calc coord	yes