January/February 2018 – Vol. 31 No. 2

Celestial Highlights for June 2013

Posted: Monday, June 3rd, 2013

by Robert Victor and Robert D. Miller

In evening twilight in June 2013, the brilliant evening “star” Venus gleams very low in the west-northwest, while Mercury lingers nearby during the first three weeks. Saturn glows yellowish and steadily well up in the south-southeast to south, contrasting with the twinkling blue-white star Spica just 13° to 12° to Saturn’s west (right).

On our evening all-sky chart, planets are plotted for each day when the Sun has sunk to 9° below the horizon, which we call “mid-twilight”. We have chosen that time, because we have found that by then, planets and stars of first magnitude or brighter are easily visible to the unaided eye, except those of lesser brightness low in the western twilight glow. In June, from Palm Springs, Los Angeles and other places near lat. 34° N, it takes until 46-47 minutes after sunset to reach mid-twilight. From northernmost California (lat. 42° N) this month, it takes about 9 minutes longer for the sky brightness to diminish to the same level.

Planet positions are represented by a separate dot for each date, with the positions for each Saturday in June (1, 8, 15, 22, 29), represented by a larger dot and labeled. We see that Jupiter is barely above the horizon on June 1. Rotate the chart until the portion of the horizon nearest to the cluster of planets low in WNW is at the bottom of the circle, and you’ll see the cluster depicted at the same orientation as in the sky: Jupiter 2.5° steeply lower right of Venus on June 1, and Mercury nearly as far to Venus’s upper left.

Note that Jupiter drops below the horizon in a couple of days, while Mercury and Venus climb a little higher each evening. But Mercury reaches its peak altitude for this apparition around the 8th of June, while Venus slows its climb and begins shifting to the left, or southward. In fact, Venus sets farthest north for this entire evening appearance – which lasts from late April 2013 until early January 2014 – on June 5, then starts a long southward trek until November 6, when Venus will set far to the southwest.

Getting back to events in June, Mercury lingers 5° above Venus for several days around June 6-7, then starts to move closer to Venus. Pick out the planet dots for June 19; on that date Mercury-Venus will appear closest, 1.9° apart, with rapidly fading Mercury passing to the south (lower left) of Venus. Mercury dots are shown through June 27, but in practice we’ll lose sight of it sooner: Mercury fades to mag. +1 by June 18, and to mag. +1.6 by June 22, as it heads down toward the near side of the Sun and becomes backlighted. Use binoculars to keep Mercury in view until the last possible date. By the last week in June, Venus will be the only planet remaining of the beautiful compact planet trio we enjoyed in late May.

One other planet resides in our June evening sky: Saturn tracking from SSE to S in mid-twilight as June progresses. The reason it drifts that way is that our Earth is moving in orbit around the Sun, overtaking the outer planets. Stars on our chart drift westward for the same reason: The revolution of Earth around the Sun. Notice the blue-white first-magnitude star Spica 13° to 12° to the west (right) of Saturn and preceding it as both objects go westward across the sky. The stars’ daily positions aren’t plotted as individual dots, but are simply represented by tracks as the stars go west (counter-clockwise around the North Star) in the course of the month, or during a single night.

The brightest star in June’s evening sky is Arcturus, high above Saturn and Spica and forming a large triangle with them. When the Big Dipper becomes visible, you can “follow the arc (of the handle) to Arcturus and drive a spike to Spica.”

Next after Arcturus in brilliance is Vega, climbing in the northeast. Compare the colors of these two stars! To Vega’s lower left is Deneb, and ascending into view later in the evening or later in the month is Altair, completing the Summer Triangle. Climbing in the southeast is reddish Antares, heart of the Scorpion.

In the west to northwest in early June is a curved arch of four stars topped by Pollux (and Castor, not shown because it’s just a little fainter than the magnitude +1.5 limit of our chart). These two stars make up the heads of Gemini, the Twins. To the Twins’ lower left is Procyon, the Little Dog Star, and in the northwest, anchoring the northern end of the arch, is Capella, the Mother Goat Star, ranking next after Vega in brightness.

Ranking last in brightness of the 16 stars of first magnitude or brighter visible in the course of a year from southern California is +1.4-mag. Regulus, heart of Leo, the Lion. Watch Regulus descend the western sky during June and July, before it passes on the far side of the Sun around August 23.

During June 10-23, the Moon is above the horizon in evening mid-twilight. Follow it nightly as it waxes, or grows, from a thin crescent on June 10, through First Quarter (half full) on June 16, to Full on the night of June 22-23. The Moon passes, in order, Venus and Mercury on June 10, the Twins on June 11, Regulus on June 13 and 14, Spica and Saturn during June 17-19, and Antares on June 21.

Source: Abrams Planetarium A 1-year subscription to the Abrams Sky Calendar consists of 4 quarterly mailings of three calendars each. The  quarters begin with February, May, August, and November issues. Cost: $11.  http://www.pa.msu.edu/abrams/SkyCalendar/Index.html

Source: Abrams Planetarium
A 1-year subscription to the Abrams Sky Calendar consists of 4 quarterly mailings of three calendars each. The quarters begin with February, May, August, and November issues. Cost: $11.
http://www.pa.msu.edu/abrams/SkyCalendar/Index.html

These diagrams from the Abrams Planetarium Sky Calendar  illustrate the Moon’s changing position against background stars in June, and Venus and Mercury in various pretty arrangements with stars Pollux and Castor. For information on Sky Calendar and a past sample issue, visit www.pa.msu.edu/abrams/SkyCalendar/

Full Moon at 4:32 a.m. PDT on Sunday, June 23 nearly coincides with the closest perigee of the year, 221,824 miles from Earth.

From southern California on Saturday, June 22, the Moon rises in the east-southeast about 38 minutes before sunset. On Sunday morning, June 23, the Moon sets in WSW 19 minutes after sunrise (the Moon having been up all night). And on that Sunday evening, the Moon rises in ESE 21 minutes after sunset. Does the Full Moon at rising or setting seem unusually large this month? But note that the Moon at rising or setting always seems large (the “Moon illusion”), even when it is at its most distant from Earth.

Looking ahead, watch for a fairly close pairing of Venus and Saturn at dusk in mid-September. In the following weeks, Venus will become a fascinating target for telescopes afternoons and evenings until early January 2014. In late November and early December 2013, four bright planets and Comet ISON will be simultaneously visible at dawn. In winter and spring 2014, Earth will overtake Jupiter in January, Mars in April, and Saturn in May, giving each planet its turn at peak brilliance and all-night visibility. Two total lunar eclipses and a partial solar, all visible throughout California, will round out the calendar year 2014.

Robert D. Miller did graduate work in Planetarium Science and later astronomy and computer science at Michigan State University and remains active in research and public outreach in astronomy.

 

Powered By DT Author Box

Written by Robert Victor

Robert Victor

Robert C. Victor was Staff Astronomer at Abrams Planetarium, Michigan State University. He is now retired and enjoys providing skywatching opportunities for school children in and around Palm Springs, CA. Robert is a member of CSTA.

Leave a Reply

LATEST POST

Accelerating into NGSS – A Statewide Rollout Series Now Accepting Registrations

Posted: Friday, January 19th, 2018

Are you feeling behind on the implementation of NGSS? Then Accelerating into NGSS – the Statewide Rollout event – is right for you!

WHO SHOULD ATTEND
If you have not experienced Phases 1-4 of the Statewide Rollout, or are feeling behind with the implementation of NGSS, the Accelerating Into NGSS Statewide Rollout will provide you with the greatest hits from Phases 1-4!

OVERVIEW
Accelerating Into NGSS Statewide Rollout is a two-day training geared toward grade K-12 academic coaches, administrators, curriculum leads, and teacher leaders. Check-in for the two-day rollout begins at 7:30 a.m., followed by a continental breakfast. Sessions run from 8:00 a.m. to 4:15 p.m. on Day One and from 8:00 a.m. to 3:30 p.m. on Day Two.

Cost of training is $250 per attendee. Fee includes all materials, continental breakfast, and lunch on both days. It is recommended that districts send teams of four to six, which include at least one administrator. Payment can be made by check or credit card. If paying by check, registration is NOT complete until payment has been received. All payments must be received prior to the Rollout location date you are attending. Paying by credit card secures your seat at time of registration. No purchase orders accepted. No participant cancellation refunds.

For questions or more information, please contact Amy Kennedy at akennedy@sjcoe.net or (209) 468-9027.

REGISTER

http://bit.ly/ACCELERATINGINTONGSS

DATES & LOCATIONS
MARCH 28-29, 2018
Host: San Mateo County Office of Education
Location: San Mateo County Office of Education, Redwood City

APRIL 10-11, 2018
Host: Orange County Office of Education
Location: Brandman University, Irvine

MAY 1-2, 2018
Host: Tulare County Office of Education
Location: Tulare County Office of Education, Visalia

MAY 3-4, 2018
Host: San Bernardino Superintendent of Schools
Location: West End Educational Service Center, Rancho Cucamonga

MAY 7-8, 2018
Host: Sacramento County Office of Education
Location: Sacramento County Office of Education Conference Center and David P. Meaney Education Center, Mather

JUNE 14-15, 2018
Host: Imperial County Office of Education
Location: Imperial Valley College, Imperial

Presented by the California Department of Education, California County Superintendents Educational Services Association/County Offices of Education, K-12 Alliance @WestEd, California Science Project, and the California Science Teachers Association.

Written by California Science Teachers Association

California Science Teachers Association

CSTA represents science educators statewide—in every science discipline at every grade level, Kindergarten through University.

The Teaching and Learning Collaborative, Reflections from an Administrator

Posted: Friday, January 19th, 2018

by Kelly Patchen

My name is Mrs. Kelly Patchen, and I am proud to be an elementary assistant principal working in the Tracy Unified School District (TUSD) at Louis Bohn and McKinley Elementary Schools. Each of the schools I support are Title I K-5 schools with about 450 students, a diverse student population, a high percentage of English Language Learners, and students living in poverty. We’re also lucky to be part of the CA NGSS K-8 Early Implementation Initiative with the K-12 Alliance. Learn More…

Powered By DT Author Box

Written by NGSS Early Implementer

NGSS Early Implementer

In 2015 CSTA began to publish a series of articles written by teachers participating in the California NGSS k-8 Early Implementation Initiative. This article was written by an educator(s) participating in the initiative. CSTA thanks them for their contributions and for sharing their experience with the science teaching community.

2018 CSTA Conference Call for Proposals

Posted: Wednesday, January 17th, 2018

CSTA is pleased to announce that we are now accepting proposals for 90-minute workshops and three- and six-hour short courses for the 2018 California Science Education Conference. Workshops and short courses make up the bulk of the content and professional learning opportunities available at the conference. In recognition of their contribution, members who present a workshop or short course receive 50% off of their registration fees. Click for more information regarding proposals, or submit one today by following the links below.

Short Course Proposal

Workshop Proposal Learn More…

Written by California Science Teachers Association

California Science Teachers Association

CSTA represents science educators statewide—in every science discipline at every grade level, Kindergarten through University.

CSTA’s New Administrator Facebook Group Page

Posted: Monday, January 15th, 2018

by Holly Steele

The California Science Teachers Association’s mission is to promote high-quality science education, and one of the best practice’s we use to fulfill that mission is through the use of our Facebook group pages. CSTA hosts several closed and moderated Facebook group pages for specific grade levels, (Elementary, Middle, and High School), pages for district coaches and science education faculty, and the official CSTA Facebook page. These pages serve as an online resource for teachers and coaches to exchange teaching methods, materials, staying update on science events in California and asking questions. CSTA is happy to announce the creation of a 6th group page called, California Administrators Supporting Science. Learn More…

Written by Guest Contributor

From time to time CSTA receives contributions from guest contributors. The opinions and views expressed by these contributors are not necessarily those of CSTA. By publishing these articles CSTA does not make any endorsements or statements of support of the author or their contribution, either explicit or implicit. All links to outside sources are subject to CSTA’s Disclaimer Policy: http://www.classroomscience.org/disclaimer.

Find Your Reason to Engage

Posted: Monday, January 15th, 2018

by Jill Grace

I was recently reflecting on events in the news and remembered that several years ago, National Public Radio had a story about a man named Stéphane Hessel, a World War II French resistance fighter, Nazi concentration camp survivor, and contributor to the United Nation’s Universal Declaration of Human Rights. The story focused on a book he had published, Time for Outrage (2010).

In it, Hessel makes the argument that the worst attitude is indifference:

“Who is in charge; who are the decision makers? It’s not always easy to discern. We’re not dealing with a small elite anymore, whose actions we can clearly identify. We are dealing with a vast, interdependent world that is interconnected in unprecedented ways. But there are unbearable things all around us. You have to look for them; search carefully. Open your eyes and you will see. This is what I tell young people: If you spend a little time searching, you will find your reasons to engage. The worst attitude is indifference. ‘There’s nothing I can do; I get by’ – adopting this mindset will deprive you of one of the fundamental qualities of being human: outrage.  Our capacity for protest is indispensable, as is our freedom to engage.”

His words make me take pause when I think of the status of science in the United States. A general “mistrust” of science is increasingly pervasive, as outlined in a New Yorker article from the summer of 2016. Learn More…

Powered By DT Author Box

Written by Jill Grace

Jill Grace

Jill Grace is a Regional Director for the K-12 Alliance and is President of CSTA.