15208+3129 LEP 74 (HD 136654)

15^h 20^m 50.07^s +31° 28' 48.3" P.A. 326.00 sep 999.9 mag 6.91,9.04 Sp F5V+K0V dist. 43.54 pc (142.03 l.y.)

Coord 2000	15208+3129	Discov num	LEP 74	Comp		Coord arcsec 2000	15 20 50.07 +31 28 48.3
Date first	1930	Date last	2020	Obs	18
Pa first	326	Pa last	325.6	P.A. Now (θ)	325.6°
Sep first	999.9	Sep last	1580.2	Sep. Now (ρ)	1580.2"
Mag pri	6.91	Mag sec	9.04	delta mag (ΔM)	2.13	Spectral class	F5V+K0V (yellow-white/yellow-orange)
Pri motion ra	-179	Sec motion ra	-181
Pri motion dec	+139	Sec motion dec	+140
Notes	N T (See Notes, Parallax indicates physical)

rPM=0.01 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 136654	Constellation	Corona Borealis	SAO	64647	HIP	75104
Tycho2	2563-00416-1	Gaia DR2	1277115023753077248	HD	136654	GC	20646
BD	BD+31 2724	Distance	43.54	Distance ly	142.03

WDS 15208+3129 LEP 74 (HD 136654) : NOTES

discov_num	notes	refcode
LEP 74	SHY 271. Bayesian analysis by Shaya & Olling (2011) indicates very	Shy2011
	high (near 100%) probability pair is physical.
	B is AX CrB (BY-Dra type). Estimated period of AB is 12Myr. Too wide
	to be a binary?	Tok2014d

REFERENCES

refcode	metd	author	reference
Shy2011	-	Shaya, E.J. & Olling, R.	2011ApJS..192....2S
Shy2011		ApJS 192, 2, 2011
Shy2011		(Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011		added to WDS only if probability 90% or greater.)
Tok2014d	E2 -	Tokovinin, A.	2014AJ....147...86T
Tok2014d		AJ 147, 86, 2014

DISCOVERER

idgroup	discov	author
1	LEP	Lepine, S., Wallace, D., Shara, M., Moffat, A., & Niemela, V.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
15208+3129	LEP 74		1999	7	326	999.9	6.91	9.04		VD	152050.07+312848.3
15208+3129	LEP 74		2002	10	326	999.9	6.91	9.04		NVD	152050.07+312848.3
15208+3129	LEP 74		2015	10	326	999.9	6.91	9.04	F5V+K0V	NVW	152050.07+312848.3
15208+3129	LEP 74		2020	15	326	999.9	6.91	9.04	F5V+K0V	NT	152050.07+312848.3

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

WDS 15208+3129 LEP 74 (HD 136654) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 15208+3129 LEP 74 (HD 136654) : MEASURES

No records found.

WDS 15208+3129 (HD 136654) : VIRTUAL EYEPIECE

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WDS 15208+3129 (HD 136654) : ALADIN DSS IMAGE @ 15^h 20^m 50.07^s +31° 28' 48.3"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 15208+3129 LEP 74 (HD 136654) : NEIGHBORHOODS

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

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		15208+3129	LEP 74		326	999.9
Show		15207+3133	KZA 80		54	25.2	5
Show		15195+3120	KZA 79		30	44.3	19
Show		15211+3102	KZA 81		174	8.0	28
Show		15216+3059	KZA 83		44	12.3	31
Show		15203+3203	TOK 300		305	343.0	35
Show		15219+3052	KZA 84	AB	354	65.3	40
Show		15219+3052	KZA 84	AC	9	99.1	40
Show		15212+3049	KZA 82		93	13.0	40
Show		15175+3148	SLW1076		125	109.5	47
Show		15228+3049	KZA 85		11	25.9	48
Show		15202+3042	STF1935		289	8.6	48
Show		15191+3046	TDS9482		244	0.6	49
Show		15224+3210	COU 795		144	0.7	49
Show		15246+3147	LEP 145		251	4.9	52
Show		15191+3043	SLW1079		97	14.1	52
Show		15239+3053	LDS4548		111	79.2	53
Show		15258+3117	UC 3001		48	5.8	66
Show		15205+3021	TDS9495		73	0.6	69
Show		15202+3244	LDS5172		77	20.0	76
Show		15152+3103	TDS9466		5	0.5	77
Show		15153+3158	LDS4541		252	3.4	77
Show		15232+3017	STF1937	AB	287	0.4	78
Show		15232+3017	KIR 4	AB,E	137	193.6	78
Show		15232+3017	STF1937	AB,C	358	75.1	78
Show		15232+3017	STF1937	AB,D	40	217.9	78
Show		15155+3049	BRT 251		10	5.2	79
Show		15174+3022	ARY 42		186	95.2	81
Show		15268+3102	TDS9517		105	0.6	81
Show		15175+3241	COU 793		61	1.5	83
Show		15181+3245	COU 794		97	0.1	84
Show		15141+3147	STT 292		158	118.0	88
Show		15259+3031	KZA 89		244	41.4	89
Show		15274+3102	KZA 90		298	19.9	89
Show		15238+3007	KZA 86		21	22.0	90
Show		15255+3020	KZA 88		115	50.4	92
Show		15163+3245	UC 2974		116	53.9	95
Show		15195+2952	KZA 78		18	42.6	99
Show		15129+3145	HJ 569		68	13.5	103
Show		15288+3101	A 1369	AB	316	4.2	106
Show		15288+3101	A 1369	AC	259	73.4	106
Show		15266+3008	WIS 286		240	876.7	110
Show		15126+3057	CRB 109		240	41.6	111
Show		15205+3320	TDS9494		197	0.9	112
Show		15201+2937	ENG 53		343	144.1	113
Show		15136+3026	CVR1622		239	4.9	113
Show		15275+3012	CVR1631		190	3.8	116
Show		15215+2933	LDS4546		88	333.3	117
Show		15269+2955	TDS9520		308	0.6	123
Show		15144+3301	OSO 62		301	20.1	123
Show		15248+2934	KZA 87		359	11.7	126

WDS 15208+3129 : COMPONENTS

	A
B	pa=329.7° sep=1509.12"

15208+3129 A

Componente originario normalizzato	AB	Name	HD 136654	Coord arcsec 2000	152050.07+312848.3	Mag	6.91
Spectral class	F5V (yellow-white)	PmRA	-179.00	PmDE	139.0	SAO	64647
HIP	75104	Tycho2	2563-00416-1	HD	136654	GC	20646
BD	BD+31 2724

Tycho2

Tycho2	2563-00416-1	Pflag		RAmdeg	230.20866128	DEmdeg	31.48010873
PmRA	-178.3	PmDE	138.9	E RAmdeg	4	E DEmdeg	4
E pmRA	1.6	E pmDE	1.5	EpRAm	1991.46	EpDEm	1991.56
Num	11	Q RAmdeg	0.8	Q DEmdeg	0.5	Q pmRA	0.7
Q pmDE	0.6	BTmag	7.485	E BTmag	0.015	VTmag	6.954
E VTmag	0.010	Prox	999	TYC	T	HIP	75104
CCDM		RAdeg	230.20914778	DEdeg	31.47978806	EpRA 1990	1.62
EpDE 1990	1.69	E RAdeg	3.6	E DEdeg	3.5	Posflg
Corr	-0.2

SAO

SAO	64647	DelFlag		RA1950		PmRA1950	-0.0141
DE1950		PmDE1950	0.147	Vmag	6.9	SpType	F5
Double code		Source	70	CatNum	20646	DM	BD+31 2724
DMcomp		BDsup		HD	136654	M HD	0
GC	20646	RA1950rad	4.00905211	DE1950rad	0.55252491	PmRA2000	-0.0139
PmDE2000	0.15

Hipparcos

Catalog	H	HIP	75104	Proxy		RAhms	15 20 50.20
DEdms	+31 28 47.2	Vmag	6.9	VarFlag		R Vmag	H
RAdeg	230.209	DEdeg	31.4798	AstroRef		Plx	22.71
CCDM		N CCDM		Nsys		Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	136654	BD	BD+31 2724
CD		CP		Dm number	+31 2724	VIred	0.59
SpType	F5	R SpType		Coord arcsec 2000	152050.20+312847.2

Hipparcos 2

HIP	75104	Sn	5	So	0	Nc	1
RArad	4.0179079534	DErad	0.5494256422	Plx	22.97	PmRA	-179.43
PmDE	138.14	E RArad	0.28	E DErad	0.35	E Plx	0.56
E pmRA	0.31	E pmDE	0.43	Hpmag	7.0102	E Hpmag	0.0009
SHp	0.01	VA	0	BV	0.532	E BV	0.003
VI	0.59

15208+3129 B

Componente originario normalizzato	AB		Coord arcsec 2000	151950.55+315032.1		Mag	9.04		Spectral class	K0V (yellow-orange)
PmRA	-181.00		PmDE	140.0		Calc delta mag	2.13		Calc coord	yes