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05393-1751
HJ 3780 AB,I

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

05393-1751 HJ 3780 AB,I

05^h 39^m 16.23^s -17° 50' 57.9" P.A. 103.00 sep 91.8 mag 6.69,10.94 Sp B7V dist. 473.93 pc (1545.96 l.y.)

Coord 2000	05393-1751		Discov num	HJ 3780		Comp	AB,I		Coord arcsec 2000	05 39 16.23 -17 50 57.9
Date first	1874		Date last	2000		Obs	7
Pa first	105		Pa last	103.3		P.A. Now (θ)	103.3°
Sep first	90.0		Sep last	91.8		Sep. Now (ρ)	91.8"
Mag pri	6.69		Mag sec	10.94		delta mag (ΔM)	4.25		Spectral class	B7V (blue-white)
Pri motion ra	-007		Sec motion ra	+007
Pri motion dec	+003		Sec motion dec	-001
Notes

rPM=1.912

This double is not physical.

05393-1751 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 37643	150652	05 39 16 -17 50 58	BU 321 AB	2008	24	160	0.5	6.69	7.83	1.14
Show		150652	05 39 16 -17 50 58	HJ 3780 AC	2017	23	137	88.8	6.69	8.89	2.20
Show		150652	05 39 16 -17 50 58	HJ 3780 AE	2017	24	8	75.4	6.69	7.90	1.21
Show		150652	05 39 16 -17 50 58	HJ 3780 AF	2012	21	300	133.9	6.69	8.25	1.56
Show		150652	05 39 16 -17 50 58	HJ 3780 AG	2012	8	51	59.6	6.69	11.24	4.55
Show		150652	05 39 16 -17 50 58	HJ 3780 AH	1999	3	308	40.8	6.69	12.70	6.01
Show		150652	05 39 16 -17 50 58	HJ 3780 AB,I	2000	7	103	91.8	6.69	10.94	4.25		<===
Show			05 39 20 -17 52 03	HJ 3780 CD	2017	19	355	1.5	8.89	9.55	0.66
Show			05 39 20 -17 52 03	HJ 3780 CI	2018	7	33	52.2	8.89	10.94	2.05

Ninefold system
10 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Lepus		SAO	150652		HIP	26602		Tycho2	5921-01652-1
Gaia DR2	2970394296672325632		HD	37643		HR	1944		ADS	4254
BD	BD-17 1199		Distance	473.93		Distance ly	1545.96