Milky Way, Whiteside, MO July 7, 2018 References: http://www.seasky.org/astronomy/astronomy-calendar-2021.html http://www.asteroidoccultation.com/2021-BestEvents.htm https://in-the-sky.org/newscalyear.php?year=2021&maxdiff=7 https://www.go-astronomy.com/solar-system/event-calendar.htm https://www.photopills.com/articles/astronomical-events-photography- guide#step1 https://www.timeanddate.com/eclipse/ All Photos by Mark Jones Unless noted Southern Cross May 6, 2018 Tulum, MX Full Moon Events 2021 Largest Apr 27 2021: diameter: 33.7’; 345,572km May 26, 2021: diameter: 33.4’; 358,014km; Eclipse Smallest Oct 20, 2021: diameter: 29.7’; 402,517km; Eclipse Image below shows the apparent size difference between largest and smallest dates Canon DSLR FL=300mm Full Moon Events 2021 May 26 – Lunar Eclipse- partial from STL Partial Start 4:23am, Alt=9 deg moon set 5:43am, 80% covered Aug 22 - Blue Moon Nov 19 – Lunar Eclipse – Almost total from STL Partial Start 1:19am, Alt=61 deg Max Partial 3:05am, Alt=42 deg Partial End 4:49am, Alt=23 deg Total Lunar Eclipse, Oct 8 2014 Canon DSLR, Celestron C-8 Other Moon Events 2021 V Lunar-X on the Moon (Start Times) • Mar 20 – 16:01 Alt=54° • May 18 – 17:34 Alt=65° • Jul 16 – 17:00 Alt=42° • Sep 13 – 16:09 Alt=15° X • Nov 11 – 18:03 Alt=32° Lunar V also seen at same Sun angles Yellow=Favorable Moon Conditions Other Moon Events 2021 Lunar V - Visible at the same time just north of the X. 14-mile-wide (23 km) Ukert Lunar X - crater edges north of Werner visible on the morning terminator Lunar L – Visible about an hour past the X’s peak time and scan southward along the terminator just beyond Stofler Crater https://astronomy.com/magazine/2018/11/o bserve-shadow-play--on-the-moon Photo: Steven Bellavia Solar Eclipses 2021 None visible from STL Next visible solar eclipse from STL Oct 14, 2023 – Partial/Annular Eclipse If you want to travel to Canada (1000 miles) you can witness a sunrise annular eclipse June 10, 2021 2021 Meteor Showers • January 3 Quadrantids; ZHR=40 (FM+4days) • April 22 Lyrids; ZHR=20 (FQ+2days) • May 4 Eta Aquarids; ZHR=60 (LQ+1day) • July 27 Delta Aquarids; ZHR=20 (FM+4days) • Aug 12 Perseids; ZHR=60 (FQ-3days) • Oct 21 Orionids; ZHR=20 (FM+1day) • Nov 17 Leonids; ZHR=20 (FM-2days) • Dec 14 Geminids; ZHR=120 (FQ+4days) Yellow=Favorable Moon Conditions Perseid Meteor, Aug 11, 2016, Belle, MO Planet Oppositions 2021 • Jupiter – Aug 19 14 (dia=49.9 arc-sec) Top to Bottom: Relative sizes of • Saturn – Aug 2 (dia=18.6 arc-sec) • Uranus – Nov 4 (dia=3.8 arc-sec) Venus • Neptune – Sep 14 (dia=2.4 arc-sec) Mars • Venus SC – Mar 26 (9.7 arc-sec) Jupiter • Venus GEE – Oct 29 (25 arc-sec) • Mars – SC Oct 8 (dia=3.6 arc-sec) Saturn • Yellow=Favorable Conditions Uranus • SC= Superior Conjunction • QEE= Greatest Elongation East Neptune • = Increase or decrease in size since 2020 Images from Stellarium Venus 2021 • Jan 1 – Morning object, 10.7 arc-seconds, mag = -3.93 • Mar 26 – SC, 9.7 arc-seconds • Oct 29 - Venus GEE – 25 arc-seconds, mag = -4.41 • Images below are at same magnification as Jupiter and show the apparent size difference between largest and smallest • SC= Superior Conjunction Venus – Jan 1 Venus – Mar 26 (SC) Venus – Oct 29 (GEE) Images from Stellarium Mars 2021 Mars – Jan 1 • Jan 1 – 10 arc-seconds in diameter, mag = - 0.22 • Mar 1 - 6.3 arc-seconds, mag = + 0.92 • Jun 1 – 4.2 arc-seconds, mag = + 1.74 • Oct 8 – SC, 3.6 arc-seconds • Dec 31 – 4.0 arc-seconds, mag = + 1.54 (morning sky) Mars – Mar 1 • SC= Superior Conjunction Mars – Oct 8 (SC) Images from Stellarium Jupiter 2021 • Jan 1 – 32.9 arc-seconds, mag = -1.95 • Aug 19 - Jupiter at opposition, 49.1 arc-seconds, mag= -2.88 • Image below shows the apparent size difference between largest and smallest dates Jan 1 Aug 19 (Opp) Images from Stellarium Saturn 2021 • Jan 1 – 15.2 arc-seconds (35.5 arc-sec rings), mag = + 0.62 • Aug 2 - Saturn Opposition – 18.6 arc-seconds (43.4 arc-sec rings), mag = + 0.18 • Images below are at same magnification as Jupiter and show the apparent size difference between largest and smallest Jan 1 Aug 2 (Opp) Images from Stellarium Uranus 2021 • Jan 1 – 3.6 arc-seconds, mag = + 5.72 • Nov 4 - Uranus opposition, 3.8 arc-seconds, mag = + 5.65 • Jupiter at same magnification Jupiter Uranus – Nov 4 (Opp) Images from Stellarium Neptune 2021 • Jan 1 – 2.3 arc-seconds, mag = + 7.92 • Sep 14 - Neptune opposition, 2.4 arc-sec, mag = +7.82 • Jupiter at same magnification Neptune – Sep 14 (Opp) Jupiter Images from Stellarium Asteroid Oppositions 2021 Mar 4 4 Vesta Leo Mag=6.2 Apr 4 9 Metis Virgo Mag=9.5 Jul 18 6 Hebe Aquila Mag=8.4 Sep 11 2 Pallas Pisces Mag=8.6 Nov 27 1 Ceres Taurus Mag=7.2 Moon Pluto 1000 km Relative sizes 1 2 3 4 5 6 7 8 9 10 TNO Oppositions 2021 Mag=17.1 Mar 27 136472 Makemake Coma Berenices 52AU Mag=17.3 Apr 17 136108 Haumea Bootes 49AU Mag=14.9 Jul 18 134340 Pluto Sagittarius 33AU Mag=18.7 Oct 17 136199 Eris Cetus 94AU Relative sizes Lunar Occultations 2021 DATE STAR NAME MAG % ILL GENERAL AREA e USA, e Canada, 16-May-21 ZC1170 κ Gem 3.6m 23+ Caribbean 1-Nov-21 ZC1702 ν Vir 4.0m 15- w USA, w Canada e USA, e Canada, w 24-Dec-21 ZC1484 η Leo 3.5m 78- Europe, nw Africa Beta Scorpi and Moon 9-21-2020 Lunar Occultations 2021 • May 16 – Moon occults Kappa Gem, mag=4.1 • Evening Sky • Starts 20:32 (8:32pm) • End 21:35 (9:35am) Images from Stellarium Lunar Occultations 2021 • Nov 1 – Moon occults v Virginis, mag=3.4 • Evening Sky • Starts 6:57 (6:57am) • End 8:11 (8:11am) Images from Stellarium Lunar Occultations 2021 • Dec 24 – Moon occults Eta Leonis, mag=3.4 • Evening Sky • Start: before moonrise • End: 21:45 (9:45pm), Alt=8 deg Images from Stellarium Lunar Conjunctions 2021 May 15 23:47 Moon-Mars: 1.6° S Jun 12 1:44 Moon-Venus: 1.6° S Nov 07 23:21 Moon-Venus: 1.1° S Dec 06 18:48 Moon-Venus: 1.9° N Moon/Mars – 10-2-2020 Moon/Saturn/Jupiter – 10-2-2020 Lunar Conjunctions 2021 • May 15 – Moon 1.5o from Mars • In Gemini • Evening Sky • 11:30pm Images from Stellarium Lunar Conjunctions 2021 • Jun 11 – Moon 2.5o from Venus • In Gemini • Evening Sky • 9:30pm, 4o above horizon Images from Stellarium Lunar Conjunctions 2021 • Nov 7 – Moon 3.5o from Venus • In Sagittarius • Evening Sky • 6:30pm, 12o above horizon Images from Stellarium Lunar Conjunctions 2021 • Dec 6 – Moon 2.5o from Venus • In Sagittarius • Evening Sky • 5:30pm, 15o above horizon Images from Stellarium Planet Conjunctions 2021 Jan 19 22:00 Mars-Uranus: 1.7° S Feb 11 6:45 Venus-Jupiter: 1.5° S Feb 23 1:38 Mercury-Saturn: 4° N Mar 04 23:11 Mercury-Jupiter: 0.3° N May 28 22:01 Mercury-Venus: 0.4° N Jul 13 8:17 Venus-Mars: 0.5° N Aug 18 22:03 Mercury-Mars: 0.1° N Jupiter/Saturn 12-20-2020 Planet Conjunctions 2021 • Jan 19 – Mars and Uranus • Evening sky • 10pm • 35o above horizon Images from Stellarium Planet Conjunctions 2021 • Feb 11 – Venus and Jupiter • 1 ½ deg • Morning sky – Very difficult • 6:45am • 2o above horizon • Mercury, Saturn, Jupiter and Venus all within 7 degrees!! Images from Stellarium Planet Conjunctions 2021 • Feb 23 – Jupiter, Saturn, Mercury before sunrise • In Capricornus • Morning Sky • 6:00am, 5o above horizon Images from Stellarium Planet Conjunctions 2021 • Mar 4 – Jupiter, Saturn, Mercury before sunrise • Jupiter and Mercury ½ deg apart • In Capricornus • Morning Sky • 5:45am, 5o above horizon Images from Stellarium Planet Conjunctions 2021 • May 28 – Venus, Mercury after sunset • Venus and Mercury 1/3 deg apart • Evening Sky • 8:45pm, 8o above horizon Images from Stellarium Planet Conjunctions 2021 • Jul 13 – Venus, Mars after sunset • Venus and Mercury 1/2 deg apart • Evening Sky • 9:45pm, 3o above horizon Images from Stellarium Planet Conjunctions 2021 • Aug 18 – Mars and Mercury after sunset • Mars and Mercury 5 arc-minutes apart !! • Evening Sky • 8:30pm, 1o above horizon • Difficult Viewing Images from Stellarium Deep Sky Conjunctions 2021 Mar 02 17:32 Mars-Pleiades: 2.6° S Apr 26 21:15 Mars-M35: 0.5° S May 03 22:01 Mercury-Pleiades: 2.2° S Jun 23 0:21 Mars-Beehive: 0.3° S Jul 02 21:45 Venus-Beehive: 0.1° N Jul 21 16:21 Venus-Regulus: 1.1° N Jul 29 9:09 Mars-Regulus: 0.6° N Oct 16 8:24 Venus-Antares: 1.5° N Venus/Pleiades Venus/Hyades 3-31-2020 7-10-2020 Deep Sky Conjunctions 2021 • Mar 2 & 3 – Mars and Pleiades • 2 ½ deg • Evening Sky • 8:30pm Images from Stellarium Deep Sky Conjunctions 2021 • Apr 26 – Mars and M35 • 1 deg • Evening Sky • 9:30pm Images from Stellarium Deep Sky Conjunctions 2021 • May 3 – Mercury and Pleiades • 2 ½ deg • 5 degrees above horizon • Evening Sky • 9 pm Images from Stellarium Deep Sky Conjunctions 2021 • Jun 23 – Mars and Bee Hive Cluster • 0 deg ! • 15 degrees above horizon • Evening Sky • 9pm Images from Stellarium Deep Sky Conjunctions 2021 • Jul 2 – Venus and Bee Hive Cluster • 1.5 deg ! • 1 degrees above horizon • Evening Sky • 10pm • Very difficult Images from Stellarium Deep Sky Conjunctions 2021 • Jul 21 – Venus and Regulus (and Mars) • 1 deg ! • 5 degrees above horizon • Evening Sky • 9:30pm Images from Stellarium Deep Sky Conjunctions 2021 • Jul 29 – Mars and Regulus • >1 deg apart • 5 degrees above horizon • Evening Sky • 9 pm • Difficult Images from Stellarium Deep Sky Conjunctions 2021 • Oct 16 – Venus and Antares • 1 ¼ deg • 15 degrees above horizon • Evening Sky • 9:30pm Images from Stellarium Asteroid Occultations 2021 Event Asteroid Ast Mag Star Star Mag dM D A Visibility Comments Date/Time , TYC 6892- 0.29m 9.2s USA, close double 29 Oct 2021 (6) Hebe mag 9.8 mag10.7 02:24 UT 00307-1 39° Mexico star (200) , 2.70m 8.2s close double 03 Dec 2021 Dyname mag 13.4 HIP 53071 mag8.5 USA star 10:15 UT ne 74° E USA, 14 Dec 2021 (22) 0.58m mag 10.3 YC 2441-00670-1 mag10.7 W , 09:26 UT Kalliope 14.7s 69° Canada Source: http://www.asteroidoccultation.com/ Asteroid Occultation On 2021 Oct 29 UT, the 200.1 km diameter asteroid (6) Hebe will occult a 10.7 mag star in the constellation Sagittarius for observers along a path across USA, Mexico.