20195+2740 MLB 609AB

Coord 2000	20195+2740		Discov num	MLB 609		Comp	AB		Coord arcsec 2000	20 19 25.86 +27 39 36.1
Date first	1897		Date last	2015		Obs	12
Pa first	280		Pa last	280		P.A. Now (θ)	280°
Sep first	5.4		Sep last	5.5		Sep. Now (ρ)	5.5"
Mag pri	12.40		Mag sec	12.60		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	+017		Sec motion ra	-025
Pri motion dec	-005		Sec motion dec	+010
Notes	R (Red magnitudes)

rPM=1.656 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 19 26 +27 39 36	MLB 609 AB	2015	12	280	5.5	12.40	12.60	0.20		<===
Show			20 19 25 +27 39 37	MLB 609 BC	2015	8	282	17.4	12.60	13.20	0.60

Triple system
3 visible stars in this system

Precise pa

280.2

Precise sep

5.507

Constellation

Hydra

Gaia DR2

1836225997982351488

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20195+2740	MLB 609	AB	2006	5	280	5.2	10.00	10.00		D	201925.86+273936.1
20195+2740	MLB 609	AB	2007	7	279	5.4	12.40	12.60		R	201925.86+273936.1
20195+2740	MLB 609	AB	2010	8	281	4.5	12.40	12.60		R	201925.86+273936.1
20195+2740	MLB 609	AB	2015	8	280	5.5	12.40	12.60		R	201925.86+273936.1

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