11256+1627 HJ 4433 AB (81 Leo)

11^h 25^m 36.37^s +16° 27' 23.5" P.A. 6.00 sep 55.4 mag 5.62,10.84 Sp F2V dist. 43.92 pc (143.27 l.y.)

Coord 2000	11256+1627	Discov num	HJ 4433	Comp	AB	Coord arcsec 2000	11 25 36.37 +16 27 23.5
Date first	1840	Date last	2018	Obs	31
Pa first	339	Pa last	6.2	P.A. Now (θ)	6.2°
Sep first	58.5	Sep last	55.37	Sep. Now (ρ)	55.37"
Mag pri	5.62	Mag sec	10.84	delta mag (ΔM)	5.22	Spectral class	F2V (yellow-white)
Pri motion ra	-142	Sec motion ra	-008
Pri motion dec	-005	Sec motion dec	-008
Notes	N L U (See Notes, Linear solution, Proper motion indicates non-physical)

rPM=0.943

This double is not physical.

11256+1627 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	81 Leo	99601	11 25 36 +16 27 24	HJ 4433 AB	2018	31	6	55.4	5.62	10.84	5.22		<===
Show		99601	11 25 36 +16 27 24	SHY 224 AC	1998	3	207	999.9	5.62	7.16	1.54

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	81 Leo	Constellation	Leo	SAO	99601	HIP	55765
Tycho2	1437-02846-1	Gaia DR2	3967618155853506304	HD	99285	HR	4408
GC	15677	BD	BD+17 2356	Flamsteed	81 Leonis	Flamsteed name	81 Leo
FK5	2913	Distance	43.92	Distance ly	143.27

WDS 11256+1627 HJ 4433 AB (81 Leo) : NOTES

discov_num	notes	refcode
HJ 4433	81 Leo.
	AB: Optical pair, based on study of relative motion of the components
	using the method of apparent motion parameters.	Kiy2008
SHY 224	AC: HIP 55765 + HIP 55262.
HJ 4433	H 5 61.	MEv2010

REFERENCES

refcode	metd	author	reference
Kiy2008	-	Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S.	2008SvAL...32..405K
Kiy2008		SvAL 34, 405, 2008
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)

DISCOVERER

idgroup	discov	author
1	HJ	Herschel, J.F.W.
50	SHY	Shaya, E.J. & Olling, R.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
11256+1627	HJ 4433	AB	2008	21	4	54.8	5.62	10.84	F2V	NLD	112536.37+162723.5
11256+1627	HJ 4433	AB	2011	22	3	56.2	5.62	10.84	F2V	NLD	112536.37+162723.5
11256+1627	HJ 4433	AB	2014	24	4	55.2	5.62	10.84	F2V	NL U	112536.37+162723.5
11256+1627	HJ 4433	AB	2015	30	4	55.1	5.62	10.84	F2V	NL U	112536.37+162723.5
11256+1627	HJ 4433	AB	2018	31	6	55.4	5.62	10.84	F2V	NL U	112536.37+162723.5

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

WDS 11256+1627 HJ 4433 AB (81 Leo) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 11256+1627 HJ 4433 AB (81 Leo) : MEASURES

No records found.

WDS 11256+1627 (81 Leo) : 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 11256+1627 (81 Leo) : ALADIN DSS IMAGE @ 11^h 25^m 36.37^s +16° 27' 23.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 11256+1627 HJ 4433 AB (81 Leo) : 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		11256+1627	HJ 4433	AB	6	55.4
Show		11256+1627	SHY 224	AC	207	999.9
Show		11263+1610	HEI 157		157	1.6	21
Show		11252+1608	HEI 156	BC	159	1.7	22
Show		11252+1608	UC 2134	AB	45	24.8	22
Show		11290+1555	HDS1629		341	0.5	59
Show		11306+1641	BRT1273		196	5.3	73
Show		11230+1744	BRT2410		46	3.5	85
Show		11202+1707	HJL1062		187	103.6	88
Show		11205+1729	KPP2044		52	16.3	96
Show		11294+1749	GWP1590		37	72.7	98
Show		11208+1515	LDS4085		172	46.3	100
Show		11327+1638	UC 2165		353	16.7	103
Show		11182+1638	A 2379	BC	288	0.4	110
Show		11182+1638	A 2379	A,BC	47	27.9	110
Show		11333+1613	SLW 615		171	132.4	112
Show		11218+1811	STF1534		314	5.1	118
Show		11340+1657	CBL 345		329	64.6	125
Show		11323+1754	FMR 221		151	6.2	129
Show		11263+1839	ZUC 9		334	1.5	133
Show		11347+1648	STF1552	BC	236	60.2	133
Show		11347+1648	STF1552	AB	209	3.1	133
Show		11347+1648	STF1552	AC	235	63.4	133
Show		11163+1634	KPP1004		245	8.1	134
Show		11321+1809	HDS1635		30	0.4	138
Show		11247+1410	SKF1078		182	0.8	138
Show		11243+1410	HJ 180		43	25.7	139
Show		11223+1841	LDS4090		38	10.2	144
Show		11210+1413	CVR1360		14	4.0	150
Show		11205+1841	TDS7797		251	6.0	153
Show		11317+1422	STF1547	AB	330	15.7	154
Show		11317+1422	WSI 101	Aa,Ab	15	0.2	154
Show		11150+1607	DEA 75		7	18.0	154
Show		11243+1354	HDS1622	AB	39	0.7	155
Show		11243+1354	TOK 545	AC	203	926.7	155
Show		11243+1354	TOK 545	AD	137	999.9	155
Show		11341+1453	HDS1641		248	0.4	155
Show		11282+1859	LDS4104		47	53.6	156
Show		11272+1908	KU 38		53	6.2	162
Show		11190+1416	STF1527		308	0.5	163
Show		11338+1433	GWP1609		135	69.9	165
Show		11212+1859	SLW 590		303	19.8	165
Show		11144+1531	BU 1283		182	0.3	172
Show		11335+1838	LDS4115		350	154.1	172
Show		11336+1414	WIS 187		357	47.7	177
Show		11178+1844	BRT2409		104	3.8	178
Show		11157+1819	GWP1566		180	191.0	181
Show		11300+1917	GWP1593		311	14.6	181
Show		11131+1646	COU 295		148	0.2	182
Show		11381+1701	GWP1626		41	11.8	184
Show		11234+1930	UC 2128		156	10.4	186

WDS 11256+1627 : COMPONENTS

	A	B
B	pa=5.9° sep=55.34"
C	pa=206.1° sep=9928.04"	pa=206.0° sep=9979.90"

11256+1627 A

Name	81 Leo	Coord arcsec 2000	112536.37+162723.5	Mag	5.62	Spectral class	F2V (yellow-white)
PmRA	-142.00	PmDE	-5.0	SAO	99601	HIP	55765
Tycho2	1437-02846-1	HD	99285	HR	4408	GC	15677
BD	BD+17 2356	Flamsteed	81 Leonis	Flamsteed name	81 Leo	FK5	2913

Tycho2

Tycho2	1437-02846-1	Pflag		RAmdeg	171.40155390	DEmdeg	16.45653973
PmRA	-142.0	PmDE	-4.3	E RAmdeg	4	E DEmdeg	4
E pmRA	0.8	E pmDE	0.7	EpRAm	1991.41	EpDEm	1991.23
Num	22	Q RAmdeg	0.5	Q DEmdeg	0.8	Q pmRA	0.6
Q pmDE	0.7	BTmag	6.009	E BTmag	0.014	VTmag	5.616
E VTmag	0.009	Prox	548	TYC	T	HIP	55765
CCDM		RAdeg	171.40189139	DEdeg	16.45654972	EpRA 1990	1.80
EpDE 1990	1.66	E RAdeg	3.7	E DEdeg	3.8	Posflg
Corr	0.3

SAO

SAO	99601	DelFlag		RA1950		PmRA1950	-0.0102
DE1950		PmDE1950	-0.012	Vmag	5.6	SpType	F2
Double code		Source	70	CatNum	15677	DM	BD+17 2356
DMcomp		BDsup		HD	99285	M HD	0
GC	15677	RA1950rad	2.98015051	DE1950rad	0.2920216	PmRA2000	-0.0102
PmDE2000	-0.006

Hipparcos

Catalog	H	HIP	55765	Proxy		RAhms	11 25 36.46
DEdms	+16 27 23.6	Vmag	5.58	VarFlag		R Vmag	H
RAdeg	171.402	DEdeg	16.4566	AstroRef		Plx	21.15
CCDM	11256+1628	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	99285	BD	BD+17 2356
CD		CP		Dm number	+17 2356	VIred	0.44
SpType	F2V	R SpType		Coord arcsec 2000	112536.46+162723.6

Hipparcos 2

HIP	55765	Sn	5	So	0	Nc	1
RArad	2.9915277468	DErad	0.2872209875	Plx	22.77	PmRA	-142.24
PmDE	-4.65	E RArad	0.28	E DErad	0.26	E Plx	0.33
E pmRA	0.29	E pmDE	0.28	Hpmag	5.6728	E Hpmag	0.001
SHp	0.005	VA	0	BV	0.39	E BV	0.005
VI	0.46

11256+1627 B

Coord arcsec 2000	112536.77+162818.5		Mag	10.84		PmRA	-8.00		PmDE	-8.0
Calc delta mag	5.22		Calc coord	yes

11256+1627 C

Coord arcsec 2000	112032.67+135901.4		Mag	7.16		Spectral class	F8V (yellow-white)		PmRA	-147.00
PmDE	1.0		Calc delta mag	1.54		Calc coord	yes