00331+1558 HEI 17

00^h 33^m 08.16^s +15° 58' 43.2" P.A. 221.00 sep 1.9 mag 10.57,13.20

Coord 2000	00331+1558	Discov num	HEI 17	Comp		Coord arcsec 2000	00 33 08.16 +15 58 43.2
Date first	1978	Date last	2016	Obs	4
Pa first	224	Pa last	221	P.A. Now (θ)	221°
Sep first	1.7	Sep last	1.9	Sep. Now (ρ)	1.9"
Mag pri	10.57	Mag sec	13.20	delta mag (ΔM)	2.63	Spectral class
Pri motion ra	+006	Sec motion ra	+007
Pri motion dec	+019	Sec motion dec	+020
Notes	V (Proper motion indicates physical)

rPM=0.067 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	220.8		Precise sep	1.852		Constellation	Hydra		SAO	91966
Tycho2	1187-00532-1		Gaia DR2	2780851415601081600

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00331+1558	HEI 17		1978	1	224	1.7	10.57	13.20			003308.16+155843.2

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