Hydrus

(redirected from Hyi)
Also found in: Dictionary, Acronyms.

Hydrus

(hÿ -drŭs) (Water Snake) A small constellation in the southern hemisphere lying between the Large and Small Magellanic Clouds. Its brightest star, Beta (β) Hydri, is of magnitude 2.8 and is the nearest conspicuous star to the south pole. Abbrev.: Hyi; genitive form: Hydri; approx. position: RA 2h, dec –70°; area: 243 sq deg.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Hydrus

 

(the Water Snake), a constellation of the southern hemisphere; its brightest stars have visual stellar magnitudes of 2.9 and 2.8. It is not visible from the USSR. (SeeSTELLAR SKY.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

Hydrus

[′hī·drəs]
(astronomy)
A southern constellation, right ascension 2 hours, declination 75°S. Also known as Water Snake.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In the case of VW Hyi, the maximum gap between the peak of the normal outburst and the detection of the subsequent superoutburst is ~5 days, whereas the maximum of the 2007 outburst of NN Cam occurred some 9 days before the detection of the superoutburst.
This has, for example, been demonstrated in the case of VW Hyi over a multiplicity of superoutbursts (18) and recently the remarkable similarity of the lightcurves of the 2001 and 2009 superoutbursts of CP Dra has been shown.
By DAVID MATSUMOTO, Ph.D., HYI SUNG HWANG, Ph.D., LISA SKINNER, J.D., and MARK FRANK, PhD.
The 8th Pacific Rim conference on "Stellar Astrophysics", Phuket, Thailand (5-9 May): Prof Warner (contributed paper: "Dwarf Nova Oscillations in VW Hyi").
In January Smits had one week of observing time on the 1.0m telescope at Sutherland during which he did differential UBVRI photometry on BR Hyi, a star that has tentatively been classified as a delta Scuti variable.
Constellations d 21:00 d 00:00 d 03:00 14 Tuc 03 Tri 04 Dor 21 Scl 06 Hyi 08 Men, LMC 27 Psc, And 12 Ari, For 11 Ori, Lep, Pic 30 SMC, Phe 20 Hor 14 Col, Aur 25 Per 29 Mon 30 Ret 30 Gem, CMa Planets Visibility of the naked-eye planets Morning sky Period Mercury Venus Mars Jupiter Saturn early Nov [check] X [check] [check] X mid-month [check] X [check] [check] [check] late Nov [check] X [check] [check] [check] Evening sky Period Mercury Venus Mars Jupiter Saturn early Nov X [check] x X X mid-month X [check] x X X late Nov X [check] X X X Moon