00164+4336 HJ 1947AB

Coord 2000	00164+4336		Discov num	HJ 1947		Comp	AB		Coord arcsec 2000	00 16 21.50 +43 35 42.4
Date first	1831		Date last	2016		Obs	38
Pa first	81		Pa last	75		P.A. Now (θ)	75°
Sep first	10.0		Sep last	9.1		Sep. Now (ρ)	9.1"
Mag pri	6.16		Mag sec	9.83		delta mag (ΔM)	3.67		Spectral class	A2VpSi (white)
Pri motion ra	+037		Sec motion ra	+036
Pri motion dec	-020		Sec motion dec	-023
Notes

rPM=0.074 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		36221	00 16 22 +43 35 42	HJ 1947 AB	2016	38	75	9.1	6.16	9.83	3.67		<===
Show		36221	00 16 22 +43 35 42	WAL 5 AC	2015	7	14	76.4	6.16	11.35	5.19
Show		36221	00 16 22 +43 35 42	WAL 5 AD	2015	3	43	99.5	6.16	11.35	5.19
Show		36221	00 16 22 +43 35 42	WAL 5 AE	2015	3	44	114.7	6.16	17.00	10.84

Quintuple system
5 visible stars in this system

Precise pa	74.7		Precise sep	9.064		Constellation	Hydra		SAO	36221
HIP	1302		Tycho2	2794-01917-1		Gaia DR2	385485619900166400		HD	1185
HR	56		BD	BD+42 41		Distance	106.5		Distance ly	347.4

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00164+4336	HJ 1947	AB	2003	32	75	8.9	6.16	9.83	A2VpSi	D	001621.50+433542.4
00164+4336	HJ 1947	AB	2008	34	78	9.7	6.16	9.83	A2VpSi	D	001621.50+433542.4
00164+4336	HJ 1947	AB	2015	36	78	9.4	6.16	9.83	A2VpSi		001621.50+433542.4

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