This Week’s Sky at a Look, March 1 – 9

March 1, 2019 - Comment

  Friday, March 1 • Distant little Mars nonetheless glimmers excessive within the west at dusk, in Aries. This night it is immediately between Mars-colored Alpha Arietis (Hamal) 10° to its proper (a fist at arm’s size), and Mars-colored Alpha Ceti (Menkar) a bit of farther to the planet’s left. The 2 stars aren’t all


Friday, March 1

• Distant little Mars nonetheless glimmers excessive within the west at dusk, in Aries.

This night it is immediately between Mars-colored Alpha Arietis (Hamal) 10° to its proper (a fist at arm’s size), and Mars-colored Alpha Ceti (Menkar) a bit of farther to the planet’s left. The 2 stars aren’t all that a lot fainter than Mars is now.

• That is the time of 12 months when Orion stands straight upright due south as the celebs come out, together with his belt diagonal. Later within the night, and later within the month, Orion begins his lengthy tilt right down to the southwest.

Moon, Saturn, Venus, March 1-3, 2019

Catch the skinny waning crescent Moon low with Venus in early daybreak of March 2nd and third.

Venus and Saturn at dawn, March 9, 2019

By March ninth Venus is just a bit decrease within the daybreak, and Saturn has advance farther to its higher proper. Alpha (α) Capricorni is a pleasant vast double star for binoculars if you happen to get outdoors earlier than the sky is just too brilliant.

• Algol is at its minimal gentle, magnitude three.four as an alternative of its regular 2.1, for about two hours centered on 7:19 p.m. EST. Whenever you look up at Algol at a random time, you might have solely a 1 in 30 probability of catching it at the very least a magnitude fainter than regular.

• In Saturday’s daybreak, the waning crescent Moon hangs very low with Venus, as proven at proper.

Saturday, March 2

• Look east after nightfall this week for Leo already climbing nicely up the sky. Its brightest star is Regulus. The Sickle of Leo, about fist and a half tall, extends higher left from there. “Leo declares spring,” goes the poetic previous saying, however actually, what Leo declares is the sloppy again finish of winter.

Sunday, March three

• Sirius stands due south proper across the finish of twilight. It isn’t solely the brightest star within the sky after the Solar, it is also the closest naked-eye star after the Solar, at eight.6 light-years, for these of us at mid-northern latitudes. Alpha Centauri is the precise closest star at four.36 light-years, however you might have be be farther south to see it. And within the northern sky three dim purple dwarfs are nearer than Sirius, however these require binoculars or a telescope.

Monday, March four

• Because it’s early March now, fairly quickly after darkish the Large Dipper rises as excessive within the northeast as Cassiopeia has descended to within the northwest. Halfway between them, as all the time, is Polaris.

Tuesday, March 5

• Extra about Sirius and Canis Main. In a really darkish sky the Large Canine’s reasonable stick determine is apparent to see — the canine is in profile prancing to the precise on his hind legs, with Sirius as his shiny canine tag — however for many of us solely his 5 brightest stars present by. These kind the unmistakable Meat Cleaver. Sirius and Murzim (to its proper) are the vast entrance finish of the cleaver, with Sirius glowing on its high again nook. All the way down to Sirius’s decrease left is the Cleaver’s different finish, together with its quick deal with, fashioned by the triangle of Adhara, Wezen, and Aludra.

Wednesday, March 6

• After darkish, Capella shines brightly excessive within the northwest. Between it and Polaris, 43° to its decrease proper due north, is a really uninteresting area of sky — in truth clean for these of us with important gentle air pollution. That is the big celestial terrain of Camelopardalis, the Giraffe. Even if you cannot see any of its relatively indecipherable star sample, now you recognize the whereabouts of one other constellation.

• New Moon (precise at 11:04 a.m. EST).

Thursday, March 7

• Betcha do not know concerning the yellow-eyed flying bat in Leo Minor close to Lynx. Its wingspan extends practically throughout your binocular discipline of view. Uncover this asterism higher proper of Leo’s Sickle these evenings with Matt Wedel’s Binocular Spotlight column and chart within the March Sky & Telescope, web page 43. As he notes there, “It solely flies right-side up when Pollux and Procyon are crossing the meridian,” as they’re now.

Friday, March eight

• It isn’t spring for one more couple weeks, however the Spring Star Arcturus appears desirous to thrust itself into view. It rises above the east-northeast horizon quickly after nightfall now relying in your latitude.

To see the place to observe for this, discover the Large Dipper as quickly as the celebs come out; it is excessive within the northeast. Observe the curve of its deal with down and round to the decrease proper by a bit of greater than a Dipper-length. That is the spot on the horizon to observe.

Saturday, March 9

• By full darkish, the Large Dipper is excessive within the northeast and starting to tip left. Look nicely to its left for Polaris and the dim Little Dipper. Apart from Polaris, all you may even see of the Little Dipper by gentle air pollution are the 2 stars forming the outer fringe of its bowl: Kochab (much like Polaris in brightness) and under it, fainter Pherkad. Discover these two “Guardians of the Pole” to Polaris’s decrease proper by a couple of fist and a half at arm’s size.

Now could be the time of 12 months when the Guardians line up precisely vertically on the finish of twilight.

• At 2 a.m. tonight, daylight-saving time begins for many of the US and Canada. Clocks “spring forward” an hour.


Need to grow to be a greater astronomer? Study your approach across the constellations. They’re the important thing to finding the whole lot fainter and deeper to hunt with binoculars or a telescope.

That is an out of doors nature interest. For an easy-to-use constellation information protecting the entire night sky, use the massive month-to-month map within the middle of every concern of Sky & Telescope, the important information to astronomy.

Jumbo Pocket Sky Atlas cover

The Pocket Sky Atlas plots 30,796 stars to magnitude 7.6, and a whole lot of telescopic galaxies, star clusters, and nebulae amongst them. Proven above is the Jumbo Version for simpler studying within the night time. Pattern chart.

When you get a telescope, to place it to good use you will want an in depth, large-scale sky atlas (set of charts). The fundamental customary is the Pocket Sky Atlas (in both the unique or Jumbo Version), which exhibits stars to magnitude 7.6.

Subsequent up is the bigger and deeper Sky Atlas, plotting stars to magnitude eight.5; practically 3 times as many. The subsequent up, as soon as you recognize your approach round, are the even bigger Interstellarum atlas (stars to magnitude 9.5) and Uranometria (stars to magnitude 9.75). And skim use sky charts with a telescope.

You will additionally need a good deep-sky guidebook, reminiscent of Sue French’s Deep-Sky Wonders assortment (which incorporates its personal charts), Sky Atlas Companion by Robust and Sinnott, or the larger Evening Sky Observer’s Information by Kepple and Sanner.

Can a computerized telescope exchange charts? Not for rookies, I do not assume, and never on mounts and tripods which are lower than top-quality mechanically (which means heavy and costly). And as Terence Dickinson and Alan Dyer say of their Yard Astronomer’s Information, “A full appreciation of the universe can’t come with out creating the talents to search out issues within the sky and understanding how the sky works. This data comes solely by spending time underneath the celebs with star maps in hand.”

Mercury descends this week in night twilight whereas additionally fading quickly from magnitude to Search for it low within the west in mid-twilight, the sooner within the week the higher. On what date are you able to final detect it? Convey binoculars!

Venus (magnitude –four.1) rises above the east-southeast horizon shortly earlier than the primary gentle of daybreak. By 30 minutes to dawn it is up about 13° relying in your latitude.

Mars (magnitude +1.2, in Aries) nonetheless glows excessive within the west at dusk and units round 11 p.m. In a telescope it is a tiny blob 5 arcseconds vast, and it will not get any higher all 12 months.

Jupiter with Great Red Spot, Feb. 21, 2019

Jupiter’s Nice Purple Spot stays colourful and simple to, um, “spot” telescopically, as seen on this February 21st picture by Christopher Go. South right here is up. “Following [to the right of] the GRS is what seems like an outbreak [a tiny bright white spot],” writes Go. “This function shouldn’t be very brilliant within the methane band, so this won’t be the outbreak that may revive the SEB [South Equatorial Belt]. The darkish band across the GRS seems very fascinating.” Many of the Equatorial Zone stays unusually tan.

Jupiter (magnitude –, within the ft of Ophiuchus) rises within the southeast within the early-morning hours and shines low within the south-southeast by very early daybreak — the very best time to look at it with a telescope.

Antares and the pinnacle of Scorpius sparkle to Jupiter’s at the moment. Take a look in on Beta Scorpii, a high quality telescopic double star. It is the highest star of the upright row of three marking Scorpius’s head, proper of Antares.

Saturn (magnitude +zero.6, in Sagittarius) glows between the extra overpowering Jupiter and Venus in early daybreak.

Uranus (magnitude 5.eight, on the Aries-Pisces border) is sinking low within the west far under Mars.

Neptune is hidden together with the Solar.

Damian Peach made this full-rotation composite of Jupiter from photos he took final Could across the time of Jupiter’s opposition, utilizing a 14-inch Schmidt-Cassegrain telescope on Barbados. In software program, he mapped the pictures onto a digital globe with Jupiter’s barely ellipsoidal form. North is up.


All descriptions that relate to your horizon — together with the phrases up, down, proper, and left — are written for the world’s mid-northern latitudes. Descriptions that additionally rely upon longitude (primarily Moon positions) are for North America.

Jap Normal Time (EST) is Common Time (UT or GMT) minus 5 hours.

Audio sky tour. Out underneath the night sky along with your earbuds in place, hearken to Kelly Beatty’s month-to-month podcast tour of the heavens above. It is free.


“Science is constructed up of info, as a home is with stones. However a set of info isn’t any extra a science than a heap of stones is a home.”
— Henri Poincaré (1854–1912)



Supply hyperlink


Comments are disabled for this post.