This is the companion Web Site of Bob Moler's Ephemeris radio program, which is broadcast Monday Through Friday on Interlochen Public Radio Stations. Interlochen Public Radio serves northwestern lower Michigan. The first Ephemeris program was broadcast June 1, 1975.

Click on the above link for live streaming audio from IPR.

Bob Moler's Ephemeris Blog contains transcripts and illustrations from the Ephemeris programs. They are generally released at 12:01 a.m. Eastern Time on the program play date.

NASA/JPL Solar System Ambassador

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Contact me at the email address at the bottom of this page to discuss star parties and presentations for schools, scout groups, and non-profit organizations.

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That being said, opinions expressed on this website are my own and not that of NASA or JPL


Ephemeris Radio Schedule Monday - Friday

Ephemeris air times (ET)

6:19 & 8:19 a.m. - News stations

7 a.m.- Classical stations

The Stations of Interlochen Public Radio

Classical:

WIAA 88.7 FM Interlochen
94.7 FM Traverse City

WIAB 88.5 FM Mackinaw City

News:

WICA 91.5, FM Traverse City

WLNM 89.7 FM Manistee

WHBP 90.1 FM Harbor Springs, Petoskey


Observing Weather in Northwestern Lower Michigan

Clear Sky Chart from Attilla Danko
NWS Traverse City Forecast.
Gaylord, MI Weather Radar.
Satellite Infrared Loop.
Canadian based Infrared Satellite (Michigan shows best in the Eastern Canada view)
GOES-East - Sector Views: Great Lakes - GeoColor

On this site – articles of interest for this month

A Hairy Constellation or a Tale of Two Clusters, May 2007

The Spring Cat - Leo March 2002

Looking Out May 2001

South Spring Skies April 2001

Exploring Spring Deep Sky Objects May 1997

The Skies of Spring (Spring constellations): May 1996


March 2019

Interested in learning more? If you live in northwestern lower Michigan check out the Grand Traverse Astronomical Society.

More information on visible planetary and other events are available on Bob Moler's Ephemeris Blog the day of the event. The blog contains Monday-Friday program transcripts, most with illustrations and additional information.

New Links: I dug through the IPR web archives and found these:

Bob Moler looks back at 40 years of 'Ephemeris'

I’m interviewed about all things astronomical prior to the August 21, 2017 eclipse. Photo, text, and audio.

Extra! My report on the Great American Eclipse. New: Added animated GIF of the sky at the totally eclipsed Sun, watching the shadow pass over.

Highlights for March 2019 (ET)

    Date   Local   Event
          Time    
Mar 1 Fr  1:23 am Moon South Dec.: 21.6° S
    1 Fr          Venus: 40.8° W
    1 Fr  1:40 pm Moon-Saturn: 0.3° S
    2 Sa  6:03 am Moon Descending Node
    2 Sa  4:28 pm Moon-Venus: 1.3° N
    4 Mo  6:25 am Moon Apogee: 406400 km
    6 We 11:04 am New Moon
    6 We  7:48 pm Neptune Conjunction with the Sun
   13 We  6:13 am Moon-Aldebaran: 2° S
   14 Th  6:27 am First Quarter
   14 Th  9:43 pm Mercury Inferior Conjunction with the Sun
   15 Fr  1:59 pm Moon North Dec.: 21.8° N
   16 Sa 12:22 pm Moon Ascending Node
   17 Su  9:01 am Moon-Beehive star cluster: 0.5° N
   18 Mo  7:59 pm Moon-Regulus: 2.5° S
   19 Tu  3:47 pm Moon Perigee: 359400 km
   20 We  5:58 pm Vernal Equinox
   20 We  9:43 pm Full Moon*
   26 Tu 10:28 pm Moon-Jupiter: 2° S
   28 Th 12:10 am Last Quarter
   28 Th  9:02 am Moon South Dec.: 21.9° S
   29 Fr  1:11 am Moon-Saturn: 0.1° N
   29 Fr  9:08 am Moon Descending Node
   30 Sa 11:08 pm Mars-Pleiades: 3.2° S
   31 Su  8:14 pm Moon Apogee: 405600 km
Apr 1 Mo          Venus: 34.6° W

NASA - SKYCAL - Sky Events Calendar by Fred Espenak and Sumit Dutta (NASA's GSFC) (with occasional annotations and additions)


* Note that Western Christian churches specify that Easter will occur the Sunday after the first full moon after the vernal equinox. However Easter will not occur on March 23rd . According to the rule the vernal equinox is set to March 21st.no matter when it actually occurs, so Easter will occurs after the full moon on April 19th, namely April 21st. The Eastern churches still use the Julian Calendar and a more complex formula to calculate the date of Easter.






Active Planetary Space Missions

We have a new location for information on planetary space missions. It's here at the Planetary Society. The chart is created by Olaf Frohn, and is updated every month.

Free Software

Stellarium is a fabulous planetarium program with a very realistic sky and simple controls.

They've added some features in the latest version (0.18.2) and and a new rendering engine that may not be compatible with computers more than a year or two old without using command line options. See the Stellarium User Guide (pdf) under Command Line Options for options to try. My older laptop requires -a. https://stellarium.org.

There’s also a web based version of Stellarium. It’s pretty much bare bones, but works much like the computer version. It’s located here: https://stellarium-web.org.

Cartes du Ciel (Sky Charts) is a great telescope companion. It can be downloaded from http://astrosurf.com/astropc/.

Virtual Moon Atlas is a great tool for reference at the telescope or desk. http://www.astrosurf.com/avl/UK_index.html.

Celestia is a great 3D simulator of solar system objects and beyond. http://www.shatters.net/celestia/

Hallo Northern Sky is an interesting planetarium program. It seems not as polished as Stellarium, but has some cool features. I use it when planning star parties as a quick way to see what would be visible because it loads quickly http://hnsky.org/


Years on the air: 43

Years on the Internet: 23



Email: bob@bjmoler.org

Updated: 03/03/19