The Sky This Week from February 10 to 17

Tuesday, February 14

Venus sidles as much as Neptune within the night twilight because the planets put together for tomorrow’s conjunction. An hour after sundown, the pair is 13.5° excessive within the west, with Venus unimaginable to overlook at magnitude –3.9. Look with binoculars to seek out faraway Neptune, magnitude 7.8, about 33′ northeast of Venus’ vivid gibbous disk. Should you can’t spot the ice big simply but, wait somewhat longer for the sky to develop darker. Inside the subsequent 24 hours, Venus will first cross due south of Neptune, then seem northeast of the distant planet by night. We’ll return tomorrow for one more look.

As soon as the sky grows somewhat darker nonetheless, have a good time Valentine’s Day with a view of the beautiful purple Coronary heart Nebula in Cassiopeia. The constellation sits to the higher left of the Little Dipper within the north this night. The Coronary heart Nebula, additionally cataloged as IC 1805, is a magnitude 6.5 emission nebula just below 5° east-southeast of magnitude 3.4 Epsilon (ε) Cassiopeiae. It’s greatest considered with a bigger (8-inch or extra) telescope, although you need to use low or excessive magnification to convey out completely different elements of its construction. A nebula filter will additional improve the view. Look significantly for NGC 896, a vivid knot of glowing fuel and dirt that sits southwest of the Coronary heart correct and is somewhat simpler to see than the bigger, fainter nebula. You too can discover NGC 1027, a Seventh-magnitude star cluster, simply over 1° east of the Coronary heart.

Dawn: 6:54 A.M.
Sundown: 5:35 P.M.
Moonrise: 1:53 A.M.
Moonset: 11:19 A.M.
Moon Section: Waning crescent (38%)

Wednesday, February 15

Venus passes 0.01° south of Neptune at 7 A.M. EST this morning. Let’s return to the pair within the night sky to see how the view has modified since yesterday.

An hour after sundown, Venus is now some 35′ northeast of Neptune as the previous travels rapidly alongside the ecliptic. Each planets will nonetheless match into the identical telescopic or binocular discipline of view, with tiny, 2″-wide Neptune coming out because the sky grows darker. The ice big will appear like a small, spherical, “flat” star coloured bluish-gray. In the meantime, Venus’ vivid disk is almost 90 p.c lit and spans 12″, six instances as vast as Neptune. Venus is way smaller than Neptune in actuality, after all, however its a lot nearer proximity makes it seem considerably bigger in our sky.

Tonight, Venus sits proper on the border between Pisces and Aquarius; the planet could have moved firmly into Pisces by tomorrow. Neptune is following at a extra sedate tempo and received’t make the border crossing into Pisces till March 4.

Dawn: 6:53 A.M.
Sundown: 5:36 P.M.
Moonrise: 3:05 A.M.
Moonset: 12:07 P.M.
Moon Section: Waning crescent (28%)

Thursday, February 16

Saturn is at the side of the Solar at 12 P.M. EST, rendering it invisible for the remainder of February. Nonetheless, the ringed planet will make its reappearance within the morning sky subsequent month.

Should you’ve been observing Venus and Neptune for the previous two nights, you’re already accustomed to the area of sky we’ll be visiting tonight. Once more, look west after sundown and also you’ll see the big determine of Cetus the Whale stretching above the horizon. This time, we’re focusing east (to the higher proper) of the planets to zero in on a wonderful goal for small scopes: the galaxy M77.

Spanning about 7′ by 6′, this barely elongated spiral glows at ninth magnitude. You’ll find M77 by sliding a mere 0.9° east of 4th-magnitude Delta (δ) Ceti. M77 is a superb instance of an energetic galaxy, whose central supermassive black gap is greedily gobbling up materials. Nonetheless, the black gap’s accretion disk isn’t so vivid that it outshines the galaxy, as occurs with quasars. As an alternative, M77 is classed as a Seyfert galaxy, whose middle exhibits indications of a feeding black gap with out overpowering the sunshine from its host. The galaxy’s middle is visually vivid largely due to the abundance of stars there, with fainter spiral arms seen by means of bigger scopes.

Dawn: 6:52 A.M.
Sundown: 5:37 P.M.
Moonrise: 4:15 A.M.
Moonset: 1:08 P.M.
Moon Section: Waning crescent (18%)

Friday, February 17

Early this morning, a fragile crescent Moon sits close to the Teapot asterism in Sagittarius. Look southeast about an hour earlier than dawn to seek out Earth’s pure satellite tv for pc some 4° above the horizon, hanging to the decrease left (east) of the Teapot’s deal with. Simply off the tip of the Teapot’s spout, marked by Gamma (γ) Sagittarii, is the Milky Method’s galactic middle and its supermassive black gap, Sagittarius A*.

Look farther proper of that spout and also you’ll run proper into the big, winding determine of Scorpius, sitting on his tail simply above the horizon. Most evident can be his vivid purple coronary heart, magnitude 1.1 Antares, a glowing purple big star within the later levels of its life. Earlier than twilight actually begins to interrupt, you possibly can get pleasure from a number of star clusters throughout the Scorpion, significantly by sweeping by means of the constellation with binoculars. The open clusters M6 and M7 lie shut collectively close to Shaula within the tail, whereas M4 and M80 are each globulars that sit up close to Antares and the Scorpion’s head.

Dawn: 6:50 A.M.
Sundown: 5:38 P.M.
Moonrise: 5:16 A.M.
Moonset: 2:20 P.M.
Moon Section: Waning crescent (10%)