Massive asteroid 3 Juno shines in opposition on Wednesday (Sept. 7)

By | 09/09/2022

The Sky This Week:
The Moon slides past Saturn

Catch a last glimpse of the zodiacal lite and planet Mercury from September two to nine.

Fri, September ii

The crescent Moon hangs in the southern heaven at dusk. As darkness falls, turn your telescope on the lunar terminator, the line that divides nighttime from day. Yous’ll notice that two big craters really stand up out: These are Hipparchus (the northernmost or topmost of the ii) and Albategnius just below information technology.

Hipparchus is the older of the two — and you can tell, when you compare its more battered rim to that of more than clearly defined Albategnius. Plus, Hipparchus’ floor, which is higher compared to its rim than Albategnius’, features more than pockmarks because it’s been exposed to the ravages of time for longer. Albategnius, meanwhile, has a deep, round crater interrupting its western rim, chosen Klein.

Bask these and the many other craters currently sitting near or along the terminator. So, come dorsum a few days later and take another look. The terminator has moved significantly equally the Sun climbs higher in the lunar heaven. Compare the two craters over again and note that shallower Hipparchus will accept nearly disappeared under the higher Sun angle.

Sunrise:
6:29 A.Yard.

Sunset:
7:xxx P.Thou.

Moonrise:
1:06 P.G.

Moonset:
10:52 P.M.

Moon Stage:
Waxing crescent (38%)
*Times for sunrise, sunset, moonrise, and moonset are given in local time from forty° N xc° West. The Moon’s illumination is given at 12 P.G. local time from the same location.

Saturday, September 3

First Quarter Moon, when our satellite’s face up reaches l percent illuminated and the terminator splits it down the middle, occurs at ii:08 P.1000. EDT.

For at present, though, the Moon remains in the evening heaven — so the time is correct to endeavour your paw at spotting the zodiacal lite, which appears earlier dawn and spreads across the ecliptic, the airplane of the solar system. Its soft glow results from sunlight scattering off fine dust particles left in the wake of comets every bit they shed debris on their repeated trips through the inner solar system.

To up your chances of spotting zodiacal light, you’ll want clear eastern skies free of local light pollution. Step outside a few hours before dawn, while the sky is all the same nighttime with no traces of morning twilight. The zodiacal light volition arc upward from the eastern horizon toward the upper correct (west), through Cancer and Gemini and toward Taurus, which currently hosts Mars merely 5° northwest of the vivid scarlet giant star Aldebaran.

Sunrise:
half dozen:xxx A.M.
Sunset:
vii:28 P.M.

Moonrise:
2:19 P.Yard.

Moonset:
xi:36 P.G.

Moon Phase:
Starting time Quarter

Sunday, September iv

Venus passes 0.8° northward of Regulus at 9 P.M. EDT. Neither is visible above the horizon at that time, just you can catch them earlier sunrise instead, when Venus appears northwest of the star, standing most directly to a higher place it in the morning sky. The blazingly vivid planet is magnitude –3.9, far outshining 1st-magnitude Regulus, normally considered a fairly vivid star. Depending on your location and your altitude, the 2 are visible starting near l minutes before sunrise in the east, slowly rising up from the horizon in the brightening dawn. Run into if you tin spot the fading Sickle of Leo, which starts at Regulus and forms a backwards question mark running through Eta (η) Gamma (γ), Zeta (ζ), Mu (μ), and Epsilon (ϵ) Leonis. This asterism as well outlines Leo’s head, which faces west (up) on the sky equally the Lion appears to sit in profile.

Through a telescope, Venus is nearly full (98 percent lit) and spans x”, roughly the aforementioned apparent size as Mars, high in a higher place in Taurus.

Sunrise:
six:30 A.M.

Sunset:
7:27 P.M.

Moonrise:
3:31 P.Grand.

Moonset:


Moon Phase:
Waxing gibbous (61%)

Mon, September 5

Comet C/2017 K2 (PanSTARRS) is yet the brightest comet in the sky, currently observed around magnitude nine — slightly fainter than predicted, though of grade, comets are notoriously
unanticipated. Still, you can take hold of information technology with a telescope under good skies, and you’ll want to starting time early: some 15 minutes afterward nautical twilight if possible. That’s because the comet has moved from Ophiuchus downwards into Scorpius, closer to the southwestern horizon.

This evening, the comet sits nigh between Pi (π) and Delta (δ) Scorpii, in the center of a small triangle formed by three 5th-magnitude field stars. Drop just 2.2° south-southeast of Delta to find it. Compare the comet’south round, fuzzy coma to nearby M80, a globular cluster ii.7° north of Sigma (σ) Scorpii. The light of the globular cluster, total of sometime stars, should appear slightly warmer than that of the comet.

While y’all’re in the region, exist sure to have in the warm, ruby glow of Antares, the Scorpion’s famous heart. This star is so named because its moniker means “rival of Mars” — the two appear similar in color to the human centre, though Antares’ lite comes from within, while Mars’ is just sunlight reflecting off rusty soil.

Sunrise:
half dozen:31 A.Grand.

Dusk:
vii:25 P.M.

Moonrise:
4:35 P.M.

Moonset:
12:29 A.1000.

Moon Phase:
Waxing gibbous (72%)

Tuesday, September six

A gibbous Moon this evening sits smack dab in the middle of the handle of the Teapot, a famous asterism in Sagittarius the Archer. Still, we’ll try our luck at finding the Dumbbell Nebula (M27), some ways away in Vulpecula the Flim-flam. The easiest manner to locate this planetary nebula is to expect about 3° north of magnitude iii.five Gamma Sagittae, the brightest star in nearby Sagitta the Arrow.

Commonly, you could see the Dumbbell well with binoculars, thanks to its apparent size and brightness: some 8′ by 6′ and magnitude 7. But with the Moon nearby, a telescope may exist best to bring out this target tonight. So called considering of its credible hourglass or dumbbell shape inside a larger, more diffuse spherical glow, M27 may look simply rectangular with hints of a tapered waist, depending on the size of your aperture and, temporarily, the glare from the Moon. If you lot want to bring out more detail, simply be patient and wait for the Moon to move farther away and begin waning again, then come back to revisit this region of the heaven and compare the view then.

Sunrise:
6:32 A.Thousand.

Dusk:
seven:24 P.1000.

Moonrise:
v:31 P.M.

Moonset:
1:35 A.M.

Moon Phase:
Waxing gibbous (82%)

Wednesday, September 7

Asteroid 3 Juno reaches opposition at one P.M. EDT in Aquarius, meaning information technology is visible all night, from dusk until dawn. The main-belt world sits 4° northwest of 4th-magnitude Phi (ϕ) Aquarii, and glows at magnitude seven.7. That’s bright enough to pick up with binoculars or any small scope. It lies simply over half of the distance between ii field stars, ane 7th magnitude and the other 9th. (Juno is closer to the fainter star.)

If yous’d like a target that’due south just a little brighter, you don’t accept to go far: 4 Vesta is now sixth magnitude and also pond through Aquarius, though on the constellation’south southern side and much closer to the Moon’southward electric current location. Drop almost 7.2° directly down toward the horizon from Deneb Algedi in Capricornus to find information technology. Again, the nearby Moon may make spotting even this brighter asteroid a challenge, so if yous’re finding yourself frustrated, just wait about one-half a week and the Moon volition have moved on, though both asteroids will take moved a bit, too. Check out the Locating Asteroids section of September’s
Heaven This Month
for a nautical chart showing how to observe Vesta all month.

The Moon reaches the closest point to Globe in its orbit, called perigee, at 2:19 P.M. EDT. At that time, our satellite volition sit 226,485 miles (364,492 kilometers) from us.

Sunrise:
six:33 A.One thousand.

Dusk:
7:22 P.1000.

Moonrise:
6:16 P.M.

Moonset:
ii:48 A.Yard.

Moon Phase:
Waxing gibbous (ninety%)

Thursday, September 8

The Moon passes 4° south of Saturn at 7 A.M. EDT, though the pair sets several hours earlier, around 4 A.M. local time. If you want to glimpse them before they disappear, endeavour an hr or then earlier that — around 3 A.Grand. local time — and look southwest to find the nigh Full Moon hanging some 5.five° south-southwest (to the lower left) of Saturn, which is glowing at magnitude 0.3. Despite the bright moonlight, the planet should still exist visible; in fact, it may be one of the but points of light even so easy to come across in that region.

If you prefer to get up just a picayune subsequently, Mars rides high in the southern sky, now standing a piffling more than four° directly above Aldebaran, Taurus’ brightest star. Compare and contrast their colors — like Antares, Aldebaran is a cerise behemothic star whose calorie-free has a warm orange-red glow. Mars is magnitude –0.2, somewhat outshining Aldebaran’s magnitude 0.9. The Red Planet volition pass four° due north of Aldebaran at 9 P.G. EDT.

Nearby, just over 11° west-northwest of Mars, is the lovely naked-eye Pleiades Cluster (M45). See how many stars in this small-scale, dipper-shaped grouping y’all can make out without any optical aid. And then, use binoculars or a telescope at low power — or even your finder telescopic — to bring out many more of this cluster’southward young suns.

Sunrise:
vi:34 A.One thousand.

Sunset:
7:twenty P.M.

Moonrise:
six:53 P.M.

Moonset:
four:06 A.M.

Moon Phase:
Waxing gibbous (96%)

Friday, September 9

Mercury stands stationary confronting the groundwork stars of Virgo at 4 P.Chiliad. EDT. It will now halt its eastward move and begin heading due west toward the border of Virgo and Leo, and back toward the Sun besides.

The best time to view the solar organization’southward smallest planet today is just after sunset — in fact, you’ll demand to be pretty quick. Twenty minutes subsequently the Sun disappears, Mercury is only 1.5° high in the west. Yous’ll want a articulate view of the horizon to catch information technology, glowing at magnitude 0.8. Binoculars or a small telescope will help. The planet’s confront is now merely over a quarter lit and spans 9″ on the sky. See if you can spot the pocket-size pinprick of light that marks magnitude –0.1 Arcturus in Boötes, 1 of the brightest stars in this part of the heaven, some 37° higher up Mercury. This is likely one of the first stars that volition pop out in the evening twilight.

Mercury will set earlier each dark, so this week is one of your last chances to run across the planet before it reaches inferior conjunction later this month.

Sunrise:
6:35 A.M.

Dusk:
vii:19 P.One thousand.

Moonrise:
7:24 P.M.

Moonset:
five:23 A.M.

Moon Phase:
Waxing gibbous (99%)

Source: https://astronomy.com/observing/sky-this-week/2022/09/the-sky-this-week-from-september-2-to-9