Astronomy News for the Month of January 2025


    This news letter is provided as a service by
The International Association for Astronomical Studies
provides this newsletter as a service for interested persons worldwide.

Downloadable version of the newsletter in
PDF Format
(Right click and select "Save target as" to begin download.)
(Always check the PDF link above if the web page is not updated.
I always publish the PDF before I upload the web page.)
PDF updated 1st of every month!

Visit the Home Page of KIØAR

Subscribe to the
IAAS Monthly Astronomy Newsletter

(Email version)
SUBSCRIBE

Subscription notes below.


Donate to the IAAS!
Your contributions are tax deductible.
Thank you for your support!


Web and email hosting by

TotalChoice Hosting


Locations of Site Visitors
Create your own visitor map!


Free Website Hit Counter
Free website hit counter

An Open Invitation

For amateur radio operators and scanner enthusiasts around the world, please join the Colorado Astronomy Net on the Rocky Mountain Radio League's K1DUN repeater on 449.450 MHz or other digital and analog repeaters, Allstar nodes, Echolinks, DMR and internet links connected to the SKYHUBLINK system. The net meets on Tuesday nights at 7 P.M. Mountain Time (US) (Wednesday at 0200 GMT). Connecting to the SkyHubLink system has expanded our coverage in the U.S., Canada and internationally. All Amateur radio operators worldwide are welcome. Anyone may listen to the net. The RMRL provides a "Live Audio Feed" using Broadcastify.

Obtain your Amateur Radio (Ham) License or your General Radio Operator's License (GROL)! Visit the South Metro VE Team website for more information. The South Metro VE Team provides test sessions by appointment only. Check the website for current information. All others interested in Amateur Radio, check out the Amateur Radio Relay League website to find out more information about becoming an Amateur Radio operator.

The Colorado Astronomy Net and the IAAS are on Facebook.
Please be sure to "Like" us!

Donate to the IAAS!
Your contributions are tax deductible.
Thank you for your support!


 Excerpts from JPL mission updates are provided as a public service as part
of the JPL Solar System Ambassador/NASA Outreach program.

For special JPL programs and presentations in your area visit the JPL Solar System Ambassador website.
(Click on the logo to link to the JPL SSA homepage.)


Rocket Report for 1/07/2025 through 01/21/2025
Courtesy of "The Rocketman" Ed W6RDZ
Updated Weekly on Tuesday evenings
prior to the Colorado Astronomy Net

In this Newsletter...


Background screen credits: NGC5775
Imaged March 21/22, 2001
using the 16" Kitt Peak Visitors Center telescope
as part of the Kitt Peak Advanced Observing Program.


"A composite shows the Dec. 7, 2022, occultation of Mars by the Moon. Although the time-lapse image makes it look as though Mars is moving, in reality it was the Moon whose faster relative motion made it appear to pass in front of a stationary Mars in the background." Astronomy Magazine, January 2025, p. 28. - Alan Dyer


The Month At-A-Glance
A calendar displaying the daily astronomical events.


12 day moon

The Moon

Phases

Apogee/Perigee

Moon/Planet Pairs

For reference: The Full Moon subtends an angle of ~0.5°.

Return to Top


Calendar of All Astronomical Events 2025

The Planets & Dwarf Planets

Planetary Reports generated by "TheSkyX" software. These reports provide predicted data for the planets for the first of each month for the current year. The rise and set times for the Sun and the Moon for each day of the month as well as meteor shower radiants are also included in the reports. These reports have been optimized for the Denver, Colorado location, however, the times will be approximate for other locations on Earth.

(Times are Mountain Daylight Time (MDT/MST) unless otherwise noted. Times will vary slightly depending on your location.)

Planetary Highlights for January

"All the major planets are on view this month. Venus has a fine evening conjunction with Saturn and Jupiter is high in Taurus. Uranus and Neptune are binocular targets, while Mars reaches opposition. Early morning reveals Mercury. Additionally, on the 9th the Moon crosses the Pleiades (M45), and on the 13th it hides Mars in a rare event." Astronomy Magazine, January 2025, p. 28.

Mercury

Rises at 5:49 a.m. on the 1st and about 7:02 a.m. by month's end. Mercury is visible about 30 minutes before sunrise just above the southeastern horizon during the first two weeks of January. Mercury moves from the constellation of Ophiuchus into Capricornus shining at magnitude -0.4 on the 1st.

Venus

Is at greatest eastern elongation (47°) on the 9th. Venus is in conjunction with Saturn on the 19th. Venus sets about 8:37 p.m. on the 1st and about 9:07 p.m. by month's end. Look for Venus to the southwest about 30 minutes after sunset. Venus moves from the constellation of Aquarius into Pisces shining at magnitude -4.6 on the 15th.

Earth

Is at perihelion (91.4 million miles from the Sun) on the 4th.

Mars

Comes closest to Earth (59.7 million miles away) on the 12th. The Moon occults Mars on the 13th/14th (See Occultations below). Mars is at opposition on the 15th, rising as the Sun sets. Mars rises at 6:02 p.m. on the 1st and about 3:01 p.m. by month's end. Look for Mars to the east in the evening. Follow Mars across the sky almost all night long. Mars moves from the constellation of Cancer into Gemini shining at magnitude -1.4.

Jupiter

Sets at 5:22 a.m. on the 1st and about 3:12 a.m. by month's end. Jupiter is easy to spot to the south in the evening sky. Follow Jupiter across the sky for the rest of the evening and into the early morning hours. Jupiter is in the constellation of Taurus shining at magnitude -2.7.

Saturn

Sets at 9:54 p.m. on the 1st and about 8:07 p.m. by month's end. By the time the Sun sets, Saturn is high to the southwest. Saturn is in the constellation of Aquarius shining at magnitude 1.1.

Uranus

Sets at 3:47 a.m. on the 1st and about 1:44 a.m. by month's end. Uranus is stationary on the 30th. Look for Uranus to the south soon after sunset. Uranus is in the constellation of Taurus shining at magnitude 5.7.

Neptune

Sets at 10:59 p.m. on the 1st and about 9:01 p.m. by the month's end. Look for Neptune to the southwest following Saturn by about an hour all month. Neptune is in the constellation of Pisces shining at magnitude 7.8.

Dwarf Planets

Ceres

Sets at 6:41 p.m. on the 1st and about 5:43 p.m. by month's end. Ceres is visible in the evening sky to the southwest. Ceres is in the constellation of Capricornus shining at magnitude 9.2.

Pluto

Is in conjunction with the Sun on the 21st. Pluto sets at 6:07 p.m. on the 1st. After conjunction, Pluto returns to the morning sky rising about 6:50 a.m. by month's end. Pluto is lost in the evening and morning twilight glow all month and is not visible. Pluto is in the constellation of Capricornus shining at magnitude 15.3 shining at magnitude 15.2.

As always, good luck at spotting Neptune, Ceres and Pluto, a large telescope and dark skies will be needed.

Constellation information provided by Go Astronomy.

Return to Top


Astronomical Events

Meteor Showers

  • The Quadrantids - This shower is generally visible between December 28 and January 7, with a very sharp maximum of 45 to 200 meteors per hour occurring during January 3 and 4. The meteors tend to be bluish and possess an average magnitude of about 2.8.

    Meteor Shower Radiant Report

    For more information about Meteor Showers, visit Gary Kronk's Meteor Showers Online web page.

    Meteor Scatter (or Meteor burst communications) - "is a radio propagation mode that exploits the ionized trails of meteors during atmospheric entry to establish brief communications paths between radio stations up to 2,250 kilometres (1,400 mi) apart." Tune your shortwave or your HF amateur radio to 54.310 MHz SSB and see if you can hear any pings. Try other frequencies as well... 6m FT8 digital - 50.313 Mhz & 50.276 Mhz, JP-65 digital mode and the carrier frequencies of the lower VHF bands for TV channels 2, 3 & 4.

    Meteor Rx How-To by Terry Bullett (WØASP)

  • Comets

  • Comet 29P/Schwassmann-Wachmann 1 may have an outburst in brightness from around magnitude 15 to 10.5 this month, but will be a challenge for most observers. The comet is passing through the constellation of Leo near several deep-sky objects.

  • For information, orbital elements and ephemerides on observable comets, visit Observable Comets.

    For more information about Comets, visit Gary Kronk's Cometography.com webpage.

  • Eclipses

    Solar Eclipses

  • No solar eclipse activity this month.

    Lunar Eclipses

  • No lunar eclipse activity this month.

  • Observational Opportunities

  • Look for Ceres, Venus, Saturn, Neptune, Uranus and Jupiter in the evening from the west to south.
  • Look for Mars in the evening to the east and follow across the sky all night.
  • Look for Mercury in the early morning to the east before mid-month.

  • Asteroids

    (From west to east)
    Ocultations

    IOTA Logo

  • Information on various occultations can be found by clicking the IOTA logo.

  • The Moon occults Mars on the 13th/14th. The occultation is observable from mid/northwest Africa across the continental U.S.

  • Return to Top


    Member Meteor Sightings

    In this section I will post meteor, fireball, etc sightings that have been published on the American Meteor Society's web site. I want to make this an active section of the web pages and newsletter and would like to publish the links to member sightings. If you have any published sightings, please provide me with the links and I will post them here for all to enjoy.

    Event ID Date/Time Location Observer Link
    3871-2015 2015-11-13 01:55 MST CO Charles N 3871a
    3587-2015 2015-11-22 17:38 MST CO Kevin S 3587aw
    3829-2015 2015-12-05 18:06 MST CO Burness A 3829a
      986-2020 2020-02-21 22:20 MST CO Lukas S 986
    3716-2020 2020-07-24 23:22 MDT CO Lukas S 3716
    4774-2021 2021-08-13 21:57 MDT UT Lukas S 4774
    7044-2021 2021-10-28 20:37 MDT CO Burness A 249058
    6763-2022 2022-10-06 05:56 CDT OK Mike C 6763
    5300-2023 2023-09-11 22:04 MDT CO Lukas S 5300
    578-2024 2024-01-28 23:05 MST CO Lukas S 578

    Return to Top


    Subscriber Gallery