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In the Sky this Week – December 29, 2021

By Robert Trembley  |  29 Dec 2021  |  Sacred Space Astronomy

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This entry is part 219 of 253 in the series In the Sky This Week

Feature|The Sky|The Moon|The Sun|Asteroids|Fireballs|The Solar System|Spacecraft News|Exoplanets|Aurora|Light Pollution|The Universe|

Happy New Year!

We took our 22-month old granddaughter to see the ZooLights exhibit at the Detroit Zoo – it was pretty spectacular! She particularly liked chasing the lasers projected onto the walkway.

What a bright idea! All 5 million lights used to illuminate the Detroit Zoo during our Wild Lights event are energy-efficient LED, which are 80 percent more efficient than traditional lights and do not contain toxic chemicals.#greenprint pic.twitter.com/6QPbAmkVQt

— Detroit Zoo (@detroitzoo) December 22, 2021

Our granddaughter has been over to visit several times in recent weeks – not once has the sky been clear enough for me to take her out to look at the stars. Just breathe, Bob…

My wife and I just made reservations to sleep under dark skies in a Bubble Hotel at Big Bend Park in Texas next April!

Speaking of my granddaughter, she showed up unexpectedly yesterday and had to stay the day and night with us – her papa slipped on some black ice and broke his sacrum and something else in his pelvis. =Ouch!= My daughter had to wait nearly half the day just trying to get him into a hospital for an MRI.

Here at home, my granddaughter made working on this post particularly difficult… AND she’s learned a new trick: the side-walls of the porta-crib we’ve been having her sleep in are now merely suggestions – I watched her effortlessly climb up and out in seconds! We just purchased a toddler crib…

https://twitter.com/AstroBalrog/status/1475498187611848706
The Sky - In the Sky

Mercury makes a return to the sky at dusk! Jupiter, Saturn, Venus and Mercury appear in the southwestern sky after sunset all week. Mercury gets higher each day, as Venus gets lower; Venus will vanish into the Sun’s glare by early January. Saturn sets a little after 7:00 PM, and Jupiter sets around 9:00 PM.

Jupiter, Saturn, Venus and Mercury appear in the southwestern sky after sunset this week. Credit: Bob Trembley / Stellarium.

Mars appears low above the southeastern horizon near the star Antares before sunrise all week; the Moon appears between Mars and the star Spica on Dec. 29th, and then appears very near Mars and Antares on Dec. 31st.

  • Southeastern horizon before sunrise
    Mars appears low above the southeastern horizon near the star Antares before sunrise all week; the Moon appears between Mars and the star Spica on Dec. 29th. Credit: Bob Trembley / Stellarium.
  • Southeastern horizon before sunrise
    Mars appears low above the southeastern horizon near the star Antares before sunrise all week; the Moon appears very near Mars and Antares on Dec. 31st. Credit: Bob Trembley / Stellarium.

The constellations Pisces, Pegasus and Andromeda appear high in the western sky after sunset all week. You should be able to spot M31, the Andromeda galaxy from moderately dark sky sites. (In the image below, the galaxy is the smudge just to the right of the word Andromeda.)

Western sky after sunset
The constellations Pisces, Pegasus and Andromeda appear high in the western sky after sunset all week. Credit: Bob Trembley / Stellarium.
The Moon - In the Sky
  • The Moon is a Waning Crescent – visible low to the east before sunrise.
  • The New Moon occurs on Jan 2nd – the part of the Moon facing us is completely in shadow.
  • After Jan. 2nd, the Moon will be a Waxing Crescent – visible toward the southwest in early evening.
Moon
The Moon from Dec. 28, 2021 Jan. 3, 2022. Visualizations by Ernie Wright / NASA’s Scientific Visualization Studio.

If you click on the Moon image above, or click this link, you will go to NASA’s Moon Phase and Libration, 2021 page – it will show you what the Moon looks like right now. If you click the image on that page, you will download a high-rez TIFF image annotated with the names of prominent features – helpful for logging your lunar observations!

Moon News

Flipped Moon?

A lunar observing puzzle: The photo on the left was taken on Dec. 6 from the @Space_Station as it flew over the Pacific Ocean east of New Zealand. The image on the right is a NASA data viz of the Dec. 6 Moon phase (https://t.co/ZjIk2r6SYC)

What's going on here? pic.twitter.com/WqPMhQVoX7

— NASA Moon (@NASAMoon) December 28, 2021

James Webb Space Telescope launches 53 years after Apollo 8 orbits the Moon

53 years ago, NASA spent Christmas Day with Apollo 8 in orbit around the Moon. This year, we celebrated a successful launch of @NASAWebb! Congratulations to the whole team. https://t.co/8pHfZtavx2

— NASA Moon (@NASAMoon) December 25, 2021

The Sun - In the Sky

WOW again! The Sun is still covered in spots! 4 named spots today – down from 8 last week. But this week we get a MONSTER spot right in the center, and a lot of discolored plage regions – Spaceweather.com says AR2916 is big and quiet. The sunspot has a relatively simple ‘beta-class’ magnetic field that poses little threat for strong flares.

The Sun on December 14, 2021. Credit: SDO/HMI

The Sun seen in 193 angstroms on December 27th

An active region in the northern hemisphere is blowing flares – a lot more than that monster spot in the southern hemisphere. Three coronal holes pepper the Sun’s face; the northern coronal hole is open and moderately-sized, the southern coronal hole appears to be open, but small in size.

https://sdo.gsfc.nasa.gov/assets/img/dailymov/2021/12/27/20211227_1024_0193.mp4

The Sun seen in 304 angstroms on December 27th

Prominences and flares galore!

https://sdo.gsfc.nasa.gov/assets/img/dailymov/2021/12/27/20211227_1024_0304.mp4

Videos courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.
You can view the Sun in near real-time, in multiple frequencies here: SDO-The Sun Now.
You can create your own time-lapse movies of the Sun here: AIA/HMI Browse Data.
You can browse all the SDO images of the Sun from 2010 to the present here: Browse SDO archive.


Amateur Solar Astrophotography

Sun
Sun Dec. 28, 2021. Credit: Eduardo Schaberger Poupeau

Solar Corona

Solar wind speed is 527.3 km/sec ▼ with a density of 12.1 protons/cm3 ▲▲ at 1546 UT.

Sun
SOHO LASCO C2 Latest Image

Click here to see a near real-time animation of the corona and solar wind from the Solar & Heliospheric Observatory (SOHO).

Sun News:

1/
Another view of the CRAZY gas tail of comet Leonard, this time from our @USNRL HI-2 camera on @NASASun STEREO-A. The solar wind is playing havoc with it! ☀️🌬️

Note: these images are *highly* processed to enhance the tail structures. More info on data processing to follow… pic.twitter.com/lpmNCQGlyw

— Karl Battams (@SungrazerComets) December 27, 2021

Asteroids - In the Sky
  • Near-Earth Objects (NEOs) discovered this month: 138, this year: 3068 (+1), all time: 27,902 (+1)
  • Potentially Hazardous Asteroids (PHAs): 2239 (+1 updated 2021-12-28)
  • Total Minor Planets discovered (MPC): 1,143,154 (-55, updated 2021-12-28) – negative corrections for several weeks now.
  • Total Minor Planets discovered (NASA): 1,113,527 (updated 2021-08-17) – not updated for months.

Upcoming Earth-asteroid encounters:

Asteroid Date(UT) Miss Distance Velocity (km/s) Diameter (m)
2017 AE3 2021-Dec-29 9.3 LD 19.1 155
2014 YE15 2022-Jan-06 19.3 LD 6.4 8
2020 AP1 2022-Jan-07 4.6 LD 5.7 4
2013 YD48 2022-Jan-11 14.6 LD 14.8 107
2021 BA 2022-Jan-18 9.8 LD 9.1 22
7482 2022-Jan-18 5.2 LD 19.6 1732
2018 PN22 2022-Jan-21 11.4 LD 2.7 11
2017 XC62 2022-Jan-24 18.7 LD 4.3 112
2021 BZ 2022-Jan-27 17.6 LD 14.6 39
2018 CA1 2022-Feb-05 9.8 LD 15.1 32
2007 UY1 2022-Feb-08 13.9 LD 6.6 89
2020 DF 2022-Feb-14 12 LD 8.6 20
2018 CW2 2022-Feb-18 2.2 LD 10.8 25
2020 CX1 2022-Feb-18 7.2 LD 8.2 54
455176 2022-Feb-22 14 LD 25.1 257
2017 CX1 2022-Feb-23 15.2 LD 5 8
2016 QJ44 2022-Feb-24 19.6 LD 8.5 324
Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

Asteroid News:

Observing an asteroid occulting a star is so cool!

Occultation of a star by #asteroid Eurybates observed last October will help supplement the data collected by the @LucyMission spacecraft, which will fly over it in 2027. See the importance of recording this astronomical event in this article:https://t.co/pKuJrZbCgZ pic.twitter.com/DvdFZmngYz

— Asteroid Day ☄ (@AsteroidDay) December 26, 2021

Dinosaur-Killing Asteroid Hit Earth at a Particularly Bad Time - Gizmodo

Winter in the northern hemisphere is always a struggle – let’s add a huge impact event!

Fireballs - In the Sky

On December 27, 2021, the NASA All Sky Fireball Network reported 9 fireballs!
(8 sporadics, 1 Dec. Leonis Minorid)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). Credit: SpaceWeather.com

Fireball News:

https://youtu.be/px_8x2rgWQs

If you see a bright meteor or a fireball, please REPORT IT to the American Meteor Society and the International Meteor Organization!

The Solar System - In the Sky

Position of the planets & several spacecraft in the inner solar system on December 28th:

Inner Solar System
Top-down view of the inner solar system on Dec. 28, 2021. Credit: Bob Trembley / NASA Eyes on the Solar System

Position of the planets in the middle solar system:

Middle Solar System
Top-down view of the middle solar system on Dec. 28, 2021. Credit: Bob Trembley / NASA Eyes on the Solar System

Position of the planets in the outer solar system:

Outer Solar System
Top-down view of the outer solar system on Dec. 28, 2021. Credit: Bob Trembley / NASA Eyes on the Solar System

Solar System News

Our 3D solar system simulator can help visualize their relative positions. Try it out yourself at https://t.co/5YjIBXKLcG pic.twitter.com/86bYHAST4K

— NASA Solar System (@NASASolarSystem) December 27, 2021

Spacecraft News - In the Sky

James Webb Space Telescope starts deployment of its sunshield

✅ Right now, we just successfully completed the first step: unfolding the forward sunshield pallet. Think of Webb’s pallets as a cake stand that will hold 5 layers of sunshield — the cake’s layers, if you will. 🍰

More about this step: https://t.co/PuMCufALA8 #UnfoldTheUniverse pic.twitter.com/o2Bqb1rYYt

— NASA Webb Telescope (@NASAWebb) December 28, 2021

James Webb Space Telescope will study Mars' atmosphere

Click to see JWST on NASA’s Solar System Orrery

 

The @NASAWebb telescope will #UnfoldTheUniverse – including Mars! Its instruments will be able to study the Martian atmosphere and how it has changed over time, dust storms, water ice variability and even surface features. More: https://t.co/18L6KVVuZP pic.twitter.com/Dfd6pdAabh

— NASA Mars (@NASAMars) December 21, 2021

HiRISE - Beautiful Mars

Click to see Mars on NASA’s Solar System Orrery

HiPOD: Dunes and Bedrock

Sometimes, we acquire an image for the simple reason of getting either more coverage of an area, and/or to complete a mosaic of a particular spot. Such is the case for this observation.https://t.co/LT5INdeiv4
NASA/JPL/UArizona#Mars #science #NASA pic.twitter.com/BFFMPmO6G0

— HiRISE: Beautiful Mars (NASA) (@HiRISE) December 28, 2021

International Space Station

Click to see the ISS on NASA’s Solar System Orrery

The Exp 66 crew continues unpacking the @SpaceX #CargoDragon today and studies plant genetics, human cells, and even space laundry. https://t.co/MBuaEUgljl

— International Space Station (@Space_Station) December 28, 2021

Imaging X-ray Polarimetry Explorer (IXPE) spacecraft launches!

Click to see IXPE on NASA’s Solar System Orrery

IXPE

Diffuse X-rays from the Local galaxy (DXL) sounding rocket mission to launch Jan. 4th

The DXL payload undergoes testing in the Sounding Rocket Payload Facility at Wallops. Credits: NASA/Berit Bland

A sounding rocket is targeted to launch Jan. 4 from @NASA_Wallops in Virginia to help us better understand the source of low-energy X-rays that bombard Earth every day. Here's how you can see the launch, weather-permitting: https://t.co/GPl75tb2Ib pic.twitter.com/H5dLQ8DUcy

— NASA (@NASA) December 29, 2021

CO2

417.24 ppm #CO2

📈 417.24 ppm #CO2 in the atmosphere December 27, 2021 📈 Up from 415.23 ppm a year ago 📈 Mauna Loa Observatory @NOAA data & graphic: https://t.co/MZIEphYygh 📈 https://t.co/DpFGQoYEwb tracking: https://t.co/PTTkLiPGm2 🙏 View & share often 🙏 pic.twitter.com/tRZOP0eYyt

— CO2_Earth (@CO2_earth) December 28, 2021

See a list of current NASA missions here: https://www.jpl.nasa.gov/missions?mission_status=current

Exoplanets - In the Sky

ex·o·plan·et /ˈeksōˌplanət/, noun: a planet orbiting a star other than the Sun.

All Exoplanets 4884
Confirmed Planets Discovered by Kepler 2703
Kepler Project Candidates Yet To Be Confirmed 2060
Confirmed Planets Discovered by K2 477
K2 Candidates Yet To Be Confirmed 1022
Confirmed Planets Discovered by TESS 175
TESS Project Candidates Integrated into Archive (2021-12-22 13:00:02) 5038 (+330)
Current date TESS Project Candidates at ExoFOP 5038 (+330)
TESS Candidates Yet To Be Confirmed 3442 (+329)

Data from the NASA Exoplanet Archive
* Confirmed Planets Discovered by TESS refers to the number planets that have been published in the refereed astronomical literature.
* TESS Project Candidates refers to the total number of transit-like events that appear to be astrophysical in origin, including false positives as identified by the TESS Project.
* TESS Project Candidates Yet To Be Confirmed refers to the number of TESS Project Candidates that have not yet been dispositioned as a Confirmed Planet or False Positive.

Exoplanet News:

I just LOVE what NASA has been doing with posters in recent years!

https://twitter.com/AstroBalrog/status/1476138816511619075
Aurora - In the Sky
Auroras. Taken by manu antuna  on December 28, 2021 @ Tromsø Norway

SpaceWeather.com Realtime Aurora Gallery: https://spaceweathergallery.com/aurora_gallery.html

Latest Aurora Oval Forecast

Aurora – 30 Minute forecast. Credit: NOAA. Click image to see northern and southern hemisphere Aurora forecast.
Light Pollution - In the Sky

We are very excited to announce that Desengano State Park in Brazil is now certified as an International Dark Sky Park! This is the first International Dark Sky Place in Brazil and International Dark Sky Park in Latin America. Learn more: https://t.co/kuOCUAtytM

— DarkSky International (@IDADarkSky) December 21, 2021

  • Visit an International Dark Sky Park: https://www.darksky.org/our-work/conservation/idsp/parks/
  • If you live in Michigan, visit the Michigan Dark Skies site: https://sites.lsa.umich.edu/darkskies/
The Universe - In the Sky

STEM

✈️ There's still time to register for @NASAglenn's 2022 University Design Challenge!

Gather your team of undergrad juniors & seniors, pick your aerospace-related technical challenge, and start brainstorming!

📅 Registration closes Dec. 31! https://t.co/D5qNR4huWy pic.twitter.com/nMATL43nxJ

— NASA STEM (@NASASTEM) December 28, 2021

Beautiful Universe: M31 – The Andromeda Galaxy

It never ceases to amaze me how just how LARGE our neighboring galaxy is: 1 trillion stars compared to our Milky Way’s 400 billion.

M31 – the Andromeda Galaxy. Credit: Claudio Costa

The Andromeda Galaxy also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy approximately 2.5 million light-years from Earth and the nearest large galaxy to the Milky Way. The galaxy’s name stems from the area of Earth’s sky in which it appears, the constellation of Andromeda, which itself is named after the Ethiopian (or Phoenician) princess who was the wife of Perseus in Greek mythology.

The virial mass of the Andromeda Galaxy is of the same order of magnitude as that of the Milky Way, at 1 trillion solar masses. The mass of either galaxy is difficult to estimate with any accuracy, but it was long thought that the Andromeda Galaxy is more massive than the Milky Way by a margin of some 25% to 50%. This has been called into question by a 2018 study that cited a lower estimate on the mass of the Andromeda Galaxy, combined with preliminary reports on a 2019 study estimating a higher mass of the Milky Way. The Andromeda Galaxy has a diameter of about 220,000 ly, making it the largest member of the Local Group in terms of extension.

The Milky Way and Andromeda galaxies are expected to collide in around 4-5 billion years, merging to form a giant elliptical galaxy or a large lenticular galaxy. With an apparent magnitude of 3.4, the Andromeda Galaxy is among the brightest of the Messier objects, making it visible to the naked eye from Earth on moonless nights, even when viewed from areas with moderate light pollution. – Wikipedia

Click here to see a zoomable image of the Andromeda galaxy

Software Apps used for this post:

NASA Eyes on the Solar System: an immersive 3D solar system and space mission simulator – free for the PC /MAC.
Stellarium: a free web-based planetarium app. It’s a great tool for planning observing sessions.

Feature|The Sky|The Moon|The Sun|Asteroids|Fireballs|The Solar System|Spacecraft News|Exoplanets|Aurora|Light Pollution|The Universe|

Clear skies, stay safe, be well, and look up!

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