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.

Click here for mp3 audio of the current batch of Ephemeris programs


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

–-----

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.

–-----

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 a.m. - News stations

6:59 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

WICV 100.9 FM East Jordan, Charlevoix

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)

On this site – articles of interest for this month

A Hairy Constellation

The Spring Cat - Leo

Looking Out

South Spring Skies

Exploring Spring Deep Sky Objects

The Skies of Spring


May 2017

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.

Highlights for May 2017 (ET)

   Date    Local Event
          Time    
May 01  Mo       Venus: 39.9° W
    02  Tu  2:23 pm Moon-Beehive: 3.7° N
    02  Tu 10:47 pm First Quarter
    04  Th  5:49 am Moon-Regulus: 0.6° N
    04  Th  6:42 am Moon Ascending Node
    04  Th 10:54 pm Eta Aquarid Shower: ZHR = 60
    05  Fr  9:51 am Mars-Aldebaran: 6.2° N
    07  Su  5:24 pm Moon-Jupiter: 2.3° S
    10  We  5:43 pm Full Moon
    12  Fr  3:51 pm Moon Apogee: 406200 km
    13  Sa  7:07 pm Moon-Saturn: 3.4° S
    14  Su  4:29 pm Moon South Dec.: 19.3° S
    17  We  6:59 pm Mercury Elongation: 25.8° W
    18  Th  8:33 pm Last Quarter
    18  Th  9:30 pm Moon Descending Node
    22  Mo  8:32 am Moon-Venus: 2.4° N
    23  Tu  9:20 pm Moon-Mercury: 1.6° N
    25  Th  3:44 pm New Moon
    25  Th  9:23 pm Moon Perigee: 357200 km
    27  Sa  7:36 pm Moon North Dec.: 19.4° N
    29  Mo  9:50 pm Moon-Beehive: 3.4° N
    31  We  7:56 am Moon Ascending Node
    31  We 12:08 pm Moon-Regulus: 0.3° N
Jun 01  Th          Venus: 45.8° W

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



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. The newest version , 0.15.3 is the current beta release.

If you have an older computer download 0.12.8, which may work better for you. They've added some features in the latest version (0.15.n) and and a new rendering engine that may not be compatible with computers more than a year or two old. http://stellarium.sourceforge.net/

Cartes du Ciel (Sky Charts) is a great telescope companion. Version 4.0 came out in March 2016. You can download it 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. http://hnsky.org/


Years on the air: 41

Years on the Internet: 21

Email: bob@bjmoler.org

Updated: 04/30/17