Boston

Astronomy
Welcome to the Boston Astronomy website ...

This website has been created by and is supported by a group of Boston, MA - area amateur astronomers. It is intended to be a convenient site to access news and information about astronomy and space-related activities of interest to the community and the public.


















       

            


                 

Next Astronomy Course:

             

Meet the Universe

            

We sit around our campfires as the ancients did, and ponder. How did the Universe come into existence? How did life begin? Are we alone? But now we see a Universe around us containing black holes, dark matter, and expanding space. What does it all mean? In this course we’ll sit around our own campfire, and try to piece together the stories that modern astronomy is teaching us.  

     

One meeting will be at a local observatory.

     

No math or science background required!

    

Meets at the Cambridge Center for Adult Education, 8 Tuesdays: September 25, 2018 - November 13, 2018, 7:45 PM - 9:15 PM.

        

Cost: $ 200.00. REGISTER

                                                        


          

 Spring / Summer Astronomy-Related Events in the Boston Area  

                                                   

            

Saturday, June 9, 2018, 8:30 PM

Astronomy Night

Robbins Farm Park

Arlington, MA

http://www.arlingtonastronomy.org/

Both Jupiter and Venus are higher in the sky now, though Venus is still setting not long after sun down. While the planets typically move further along the sky day to day, due to Venus's orbit closer to the Sun, it can appear to move in a retrograde fashion from our perspective. A moonless sky reveals more stars than our previous night.

 

  

Thursday, June 14, 2018, 8:00 PM - 10 PM

Amateur Telescope Makers of Boston (ATMoB) Monthly Meeting

Harvard-Smithsonian Center for Astrophysics

60 Garden St.

Cambridge, MA 02138

http://www.atmob.org

Topic and Speaker: "Mysterious Mars", Kelly Beatty
Why are we so fascinated with Mars, our neighbor in space? Why is it so like our own Earth in some ways — and so utterly different in others? Come along as we explore the "Red Planet" from afar and up close. (You'll go right onto the dusty Martian surface, thanks to 3-D imagery — glasses provided!) Meanwhile, spacecraft from NASA and the European Space Agency are scrutinizing every bit of its globe — both from orbit and from the ground — to determine the planet's geologic history. We'll delve into the real odds of finding life there. And get ready for the forthcoming favorable opposition of Mars this summer — its closest pass to Earth in 15 years! Kelly Beatty, a Sky and Telescope Senior Contributing Editor, joined the staff in 1974 and served as the editor of Night Sky, a magazine for beginning stargazers, in 2004-07. After 43 years of pounding the keyboard, he retired from full-time work in early 2018 but remains actively involved in many Sky & Telescope articles, tours, and other projects. Specializing in planetary science and space exploration, Kelly conceived and edited The New Solar System, considered a standard reference among planetary scientists. He also taught astronomy for six years at the Dexter Southfield School in Brookline, Massachusetts. Kelly has been honored twice by the Division for Planetary Sciences (DPS) of the American Astronomical Society. In 2005 he received the Harold Masursky Award for meritorious service, and in 2009 he was honored with the inaugural Jonathan Eberhart Journalism Award. He is also a recipient of the prestigious Astronomical League Award (in 2006) for his contributions to the science of astronomy and the American Geophysical Union's Cowen Award for Sustained Achievement in Science Journalism (2009). You'll occasionally hear his interviews and guest commentaries on The Weather Channel and National Public Radio, and his work has appeared in numerous other magazines, newspapers, and encyclopedias. In fact, Kelly enjoys speaking to audiences of all ages and interest levels about his passion for astronomy. He observes when he can through one of his eight telescopes, and he is active nationally in the fight against light pollution. Kelly hails from Madera, California. He holds a Bachelors degree in geology from the California Institute of Technology and a Master's degree in science journalism from Boston University. During the 1980s he was among the first Western journalists to gain firsthand access to the Soviet space program. Asteroid 2925 Beatty was named on the occasion of his marriage in 1983, and in 1986 he was chosen one of the 100 semifinalists for NASA's Journalist in Space program.

     

Thursday, July 12, 2018, 8:00 PM - 10 PM

Amateur Telescope Makers of Boston (ATMoB) Monthly Meeting

Harvard-Smithsonian Center for Astrophysics

60 Garden St.

Cambridge, MA 02138

http://www.atmob.org

   

   

Friday, July 13 -  Saturday, July 14, 2018

Connecticut River Valley Astronomers Conjunction
Northfield Mountain Recreational and Environmental Center
Northfield, MA
http://www.philharrington.net/astroconjunction/
 

             

  

Saturday, July 14,  2018, 8:45 PM

Astronomy Night

Robbins Farm Park

Arlington, MA

http://www.arlingtonastronomy.org/

Jupiter is now high in the southern sky at sundown and Saturn is now rising in the East, displaying its rings in increasing clarity as it rises higher in the sky. The Moon is setting at dusk, just above Mercury. Venus is still up in the West.

     

  

Saturday, August 4, 2018, 8:45 PM

Astronomy Night

Robbins Farm Park

Arlington, MA

http://www.arlingtonastronomy.org/

Jupiter and Saturn are up in the southern sky, and a moonless night lets us see into the deep sky. As the sky darkens, Mars rises in the East, giving us a first glimpse of the Red Planet for the season.

     

     

Thursday, August 9 - Sunday, August 12, 2018

Stellafane
Springfield, VT
http://stellafane.org/

     

  

Friday, August 10 - Sunday, August 19, 2018

Summer Star Party
Peppermint Park Camping Resort
Plainfield, MA
http://www.rocklandastronomy.com/ssp.html
        

         

   

     

Plus (ongoing):        

          

Wednesdays:

Boston University

Boston, MA.
Open Night at Coit Observatory most Wednesdays 8:30 PM - 9:30 PM. 

617-353-2630
http://www.bu.edu/astronomy/events/public-open-night-at-the-observatory/  

    

 

Thursdays (every third Thursday of the month, January-May & September-November, 8:30 - 10:30 PM)

CfA Public Observatory Night

Harvard-Smithsonian Center for Astrophysics

60 Garden St.

Cambridge, MA 02138

https://www.cfa.harvard.edu/publicevents

    

    

Fridays:

Astronomy After Hours (starting April 13; 8:00 PM - 10:00 PM)

Guilliland Observatory

Museum of Science

Boston, MA

https://www.mos.org/public-events/astronomy-after-hours

Did you know that the Museum offers our starry-eyed public free evenings full of astronomy-themed fun? Join us, weather-permitting*, at the Gilliland Observatory on the roof of the Museum’s parking garage. On clear nights, you can view stars, planets, the Moon, and other astronomical phenomena. On cloudy nights, tour the inside of our Observatory and participate in a variety of hands-on astronomy and space science activities with Museum staff.

In 2018, this seasonal program will run on Friday nights from April 13 – October 26 and Thursday nights from July 5 – August 30. Hours vary as sunset times shift throughout the season.

  • Fridays, April 13 – 27: 8:00-10:00

  • Fridays in May and June: 8:30-10:30

  • Thursdays and Fridays in July and August: 8:30-10:30

  • Fridays in September and October: time TBD

*On rainy nights and nights when there are chances of thunderstorms, we’ll offer a variety of astronomy and space and earth science activities in the Suit/Cabot Laboratory, located in the Red Wing, Lower Level.

For more details, and to find out which location Astronomy After Hours will be running on a scheduled evening, call our hotline at 617-589-0267. We update with the evening’s plans by 5:30 pm on the day of the program.

Please be aware that throughput in the Observatory is limited. During the summer when we are the busiest, please plan to arrive no later than half an hour before the end of the program to ensure a place in line. Visitors arriving less than a half-hr before close may participate in other astronomy-themed activities but will be admitted to the observatory only as time allows.

       

                

     

Current Night Sky: July 2018

                                                                     

 The Earth is at aphelion – its furthest distance from the Sun – at 1:00 PM EDT on July 6. The distance between the two bodies reaches its annual maximum: 94.5 million miles. (Recall that the heat of summer and the cold of winter seasons are caused not by Earth’s distance from the Sun but by its axial tilt.)

     

There is a partial solar eclipse, visible mainly from Antarctica, on July 12.

     

There is a total lunar eclipse, visible from the Eastern Hemisphere, on July 27.

            

             

            Phases of the Moon:

  

Last Quarter Moon

July 6

3:51 AM EDT

New Moon

July 12

10:48 PM EDT

First Quarter Moon

July 19

3:52 PM EDT

Full Moon

July 27

4:20 PM EDT

     

Planet Visibility:

    

In Evening (after sunset):

    Mercury, in W

    Venus, in W

    Jupiter, in S

    Saturn, SE

    Mars, in SE 

         

At Midnight:

    Jupiter, in SW

    Saturn, in S

    Mars, in SE

    Neptune, in E   

                     

 In Morning (before sunrise):

    Mars, in SW

    Neptune, in S

    Uranus, in SE 

                       

           

Comets:

    

    •     There are no comets brighter than magnitude 8 visible this month.
  •          

Meteors:

     

  •     The Southern Delta Aquariid meteors peak around July 30; given that the Full Moon occurs three days earlier, the meteors should be sparse this year.
                     

                                                                               

                

 

     Earth’s orbit around the Sun is almost – but not quite – perfectly circular.  Earth reaches aphelion – its furthest distance from the Sun – in early July,

and is closest to the Sun in January. Our planet is about 3% further from the Sun at aphelion than it is at perihelion. (Credit: timeanddate.com).

       

                              

  

               Mercury and Venus grace the evening sky in July. Venus has been prominent after sunset for months – and will continue to be so into the fall.

Mercury, on the other hand, is making a brief “pop-up” appearance for a couple of weeks. (July 12, 2018).

       

                     

  

              

Forty-nine years ago, the first humans landed on the Moon. The crew of Apollo 11 – Neil Armstrong and Buzz Aldrin – set down on the Sea of Tranquility.

Five more human landings followed through 1972, but there have been none since. The illustration above shows the Moon as it appeared from Earth at the time of the landing. The Sea of Tranquility is about half way up the inner portion of the crescent, just inside the illuminated region. (July 20, 1969, 4:18 PM EDT).

              
                        

Mars Gets Close

                                         

Earth goes around its star in a year; Mars, moving at a more leisurely speed in its more distant orbit, takes about 1.88 years. Every 26 months or so, Earth overtakes Mars. There comes a moment when the Sun, the Earth, and Mars are all in a line, before our planet passes Mars and speeds on. Such a line-up is referred to as an “opposition”. The term originates in the fact that, from our point of view on Earth, Mars and the Sun lie in directly opposite directions in our sky. It follows that, on such occasions, Mars will be seen to rise as the Sun is setting, and will set at sunrise; it will, in other words, stay up all night.

     

It also follows that the two planets are closest at opposition. All other things being equal, it is then that Mars will appear the largest and brightest. Such a Mars opposition is coming up this month – on July 27th, to be exact.

     

It turns out, however, that not all Mars oppositions are equal. Earth’s orbit around the Sun is not precisely circular, and that of Mars is substantially eccentric. So even though Mars oppositions do tend to occur every 26 months, some result in closer encounters than others; this repeats in a 15-year or 17-year cycle.

      

                       

        

The opposition of 2018 will be a very close one. The last time Earth and Mars had such a close encounter would have been in 2003; at that time the distance between the planets was less than it had been for almost 60,000 years! This July, they will be almost as close.

      

And how close is that?

     

Because of the eccentricity of the orbits of the two planets as referred to above, the moment of closest approach occurs, not precisely at the moment of opposition,

but several days later. On July 31, Mars and Earth will be separated by 35.78 million miles. A radio transmission from the Opportunity or Curiosity rover on its surface – travelling at the speed of light - takes nearly three and a quarter minutes to reach us.

    

              

  

  

Unfortunately, the proximity of the planet will likely feed the persistent Internet rumor that “Mars will appear as big as the Moon”.  (That rumor itself had its origin in the 2003 event – though it filtered out the part of the phrase that said “ … through a telescope”!) In fact, Mars will appear 24.3 arc-seconds across at closest approach. (There are 360° in a complete circle, 60 arc-minutes in a degree, and 60 arc-seconds in an arc-minute.) For comparison, Jupiter at the time will appear as a disk 38 arc-seconds across, and Saturn – its visible rings included - will be 41 arc-seconds wide. Far from appearing as large as the Moon, Mars will appear no larger than a medium-sized lunar crater.

      

Indeed, Mars is a small planet to begin with – roughly half the diameter of Earth, and it is difficult to see detail on its disk even under the best of circumstances. The past history of Mars observation bears witness to this fact. A century ago, astronomers like Percival Lowell convinced themselves that they were seeing an elaborate network of artificial “canals” on Mars. Decades later, observers reported seasonal changes on the planet, which they attributed to the growth of vast regions of vegetation.

     

These days, spacecraft such as Opportunity, Curiosity, and many others are gradually revealing the real Mars. We still don’t know whether there is - or ever has been – life on Mars, but we’re discovering that neighboring world is no less astonishing than the one in our fantasies.

       


   
                                                                        Major Astronomical Events: July 2018
               
    

July 2018

    
July 3 Tue. 8:00 PM EDT Moon 3° S of Neptune
July 4 Wed. All day Henrietta Leavitt born 150 years ago (1868)
July 4 Wed. 11:00 AM EDT Mercury 0.7° S of Beehive (M44)
July 5 Thur.

12:46 AM EDT - 3:05 AM EDT

Saturn occults TYC6277-323-1 (mag. 8.8)

July 6 Fri. 12:45 AM EDT Earth @ aphelion (1.0167 AU / 152.1 milion km / 94.5 million miles)
July 6 Fri. 3:51 AM EDT Last Quarter Moon
July 7 Sat.   Mars become brighter than Jupiter
July 7 Sat. 10:00 AM EDT Moon 5° S of Uranus
July 9 Mon. 4:00 PM EDT Venus 1.1° N of Regulus
July 10 Tues. 6:00 AM EDT Moon 1.1° N of Aldebaran
July 10 Tue. 12:26 AM EDT Pluto @ closest approach (32.582 AU / 4.874 billion km / 3.03 billion mi)
July 11 Wed. 11:00 PM EDT Pluto @ opposition (mag. 14.2)
July 11 Wed. 11:00 PM EDT Asteroid 2 Pallas @ opposition
July 12 Thur. 1:00 AM EDT Mercury @ greatest elongation east (26°)
July 12 Thur. 5:41 AM EDT Pluto @ opposition
July 19 Thur. 9:48 PM EDT - 12:13  AM EDT Partial Solar Eclipse (visible from Antarctica)
July 12 Thur. 10:48 PM EDT New Moon
July 13 Fri. 4:25 AM EDT Moon @ perigee (357,430 km / 222,097 mi)
July 14 Sat. 6:00 PM EDT Moon 2° N of Mercury
July 15 Sun. 12:00 AM EDT Moon 1.6° N of Venus
July 15 Sun. 1:00 PM EDT Moon 1.8° N of Regulus
July 16 Mon.

1:19 AM EDT (SCET)

Juno Jupiter orbiter Perijove #14 (End of Primary Mission)

July 19 Thur. 3:52 PM  EDT First Quarter Moon
July 20 Fri. 7:53 AM EDT First landing on Mars 43 years ago (Viking 1, 1976)
July 20 Fri. 4:18 PM EDT First human landing on Moon 49 years ago (Apollo 11, 1969)
July 20 Fri. 8:00 PM EDT Moon 4° N of Jupiter
July 20 Fri. 9:00 PM EDT Sun enters Cancer
July 20 Fri. 10:56 PM EDT First human steps on Moon 49 years ago (Neil Armstrong)
July 23 Mon. All day Vera Rubin born 90 years ago (1928)
July 25 Wed. 2:00 AM EDT Moon 2° N of Saturn
July 27 Fri. 1:00 AM EDT Mars @ opposition
July 27 Fri. 1:44 AM EDT Moon @ apogee (406,223 km / 252,415 mi)
July 27 Fri. 2:24 PM EDT - 6:19 PM EDT Total Lunar Eclipse (Eastern Hemisphere only)
July 27 Fri. 4:20 PM EDT Full Moon ("Full Buck Moon")
July 27 Fri. 6:00 PM EDT Moon 7° N of Mars
July 30 Mon.   South Delta Aquariid meteors (poor, < 25 / hr))
July 31 Tues. 2:00 AM EDT Moon 3° S of Neptune
July 31 Tues. 4:00 AM EDT Mars @ closest approach (0.385 AU / 57,595,192 km / 35,787,993 mi)

   


 

An Overview of Major Astronomical Events in 2018
 

2018

Jan. 1

Mon.

3:00 PM EST

Mercury @ greatest elongation west (23°)

Jan. 3

Wed.

12:35 AM EST

Earth @ perihelion (0.98328 AU / 147,097,233 km / 91,401,983 mi)

Jan. 3

Wed.

7:14 AM EST

Latest sunrise of year (7:13:48 AM)

Jan. 3

Wed.

4:00 PM EST

Quadrantid meteors peak. (Poor.)

Jan. 8

Mon.

6:00 PM EST

Venus @ superior conjunction

Jan. 19

Fri.

4:42 AM EST - 4:56 AM EST

Double shadow transit on Jupiter (Europa, Ganymede)

Jan. 31

Wed.

5:51 AM EST - 6:56 AM EST

Total Lunar Eclipse (partial in Boston)

Jan. 31

Wed.

11:33 AM EST

Ceres @ opposition

Feb. 7

Wed.

8:53 AM EST (SCET)

Juno Jupiter orbiter Perijove #11

Feb. 17

Sat.

12:00 AM EST

Mercury @ superior conjunction

Mar. 4

Sun.

9:00 AM EST

Neptune @ superior conjunction

Mar. 11

Sun.

2:00 AM EST / 3:00 AM EDT

Daylight Saving Time begins

Mar. 15

Thur.

10:00 AM EDT

Mercury @ greatest elongation east (18°)

Mar. 17

Sat.

6:53 AM EDT - 6:53 PM EDT

Equilux (day and night of equal length)

Mar. 20

Tue.

12:15 PM EDT

March Equinox

Mar. 28

Wed.

8:30 PM EST

Venus 4' from Uranus

Mar. 31

Sat.

    

Deadline for Google Lunar X Prize

Apr. 1

Sun.

5:47 AM EDT (SCET)

Juno Jupiter orbiter Perijove #12

Apr. 1

Sun.

7:00 AM EDT

Mercury @ inferior conjunction

Apr. 16 Mon.  

Launch of TESS (Transiting Exoplanet Survey Satellite)

Apr. 18

Wed.

10:00 AM EDT

Uranus @ superior conjunction

Apr. 21

Sat.

All day

Astronomy Day (Spring)

Apr. 29

Sun.

11:06 AM EDT

Mercury @ greatest elongation west (27°)

May 5

Sat.

  7:05 AM EDT - 9:05 AM EDT

InSight Mars lander launched

May 5

Sat.

3:00 AM EDT

Eta Aquariid meteors peak. (Good.)

May 8

Tue.

9:00 PM EDT

Jupiter @ opposition

May 24

Thur.

1:41 AM EDT (SCET)

Juno Jupiter orbiter Perijove #13

May 23

Wed.

     

Fall Equinox, N. Hemisphere of Mars

June 1

Fri.

     

Hayabusa-2 orbital insertion around asteroid (162173) Ryugu

June 4 Mon. New Horizons wakes from hiberation prior to MU69 encounter

June 5

Fri.

3:00 PM EDT

Mercury @ superior conjunction

June 14

Thur.

5:07 AM EDT

Earliest sunrise

June 19

Tue.

4:00 PM EDT

Vesta @ opposition

June 21

Thur.

6:07 AM EDT

June (Summer) Solstice

June 26

Tue.

8:25 PM EDT

Latest sunset of year (8:25:22 PM)

June 27

Wed.

9:00 AM EDT

Saturn @ opposition

July 5

Thur.

12:46 AM EDT - 3:05 AM EDT

Saturn occults TYC6277-323-1 (mag. 8.8)

July 6

Fri.

12:46 PM EDT

Earth @ aphelion (1.017 AU / 152.1 milion km / 94.5 million miles)

July 7 Sat.   Mars becomes brighter than Jupiter

July 12

Thur.

12:00 AM EDT

Mercury @ greatest elongation east (26°)

July 12

Thur.

6:00 AM EDT

Pluto @ opposition

July 16

Mon.

1:19 AM EDT (SCET)

Juno Jupiter orbiter Perijove #14 (End of Primary Mission)

July 27

Fri.

1:00 AM EDT

Mars @ opposition

July 31

Tue.

4:00 AM EDT

Mars @ closest approach (0.385 AU / 57,595,192 km / 35,787,993 mi)

Aug.

    

    

SpaceX Falcon 9 • Crew Dragon 2 Demo 1

Aug. 4 Sat.   Parker Soar Probe launched

Aug. 8

Wed.

3:00 PM EDT

Mercury @ inferior conjunction

Aug. 12

Sun.

9:00 PM EDT

Perseid meteors peak. (Very good.)

Aug. 13 Mon.   New Horizons switches to 3-axis stabilized mode

Aug. 15

Wed.

1:09 AM EDT

Venus @ dichotomy

Aug. 16 Thur.   New Horizons begins Approach Phase

Aug. 16

Thur.

8:06 PM EDT - 10:12 PM EDT

Double shadow transit on Jupiter (Io, Europa)

Aug. 17

Fri.

   

OSIRIS-REx orbital insertion around asteroid 101955 Bennu

Aug. 17

Fri.

3:58 PM EDT

Venus @ greatest elongation east (46°)

Aug. 21 Tue.   New Horizons attempts first imaging of MU69 target

Aug. 26

Sun.

5:58 AM EDT

Mercury @ greatest elongation west (18°)

Aug. 27 Mon.   Atlas 5 • CST-100 Starliner Orbital Flight Test

Sept. 6

Thur.

9:14 PM EDT (SCET)

Juno Jupiter orbiter Perijove #15 (beginning of Extended Mission)

Sept. 7 Fri.   Mars becomes dimmer than Jupiter

Sept. 7

Fri.

2:00 PM EDT

Neptune @ opposition

Sept. 16

Sun.

1:00 AM EDT

Mars @ perihelion

Sept. 20

Thur.

3:00 PM EDT

Mercury @ superior conjunction

Sept. 21

Fri.

6:00 AM EDT

Venus @ greatest brilliancy (mag. - 4.8)

Sept. 22

Sat.

9:54 PM EDT

September (Fall) Equinox

Sept. 25

Tue.

6:35 AM EDT / 6:36 PM EDT

Equilux (day and night of equal length)

Sept. 25

Tue.

12:17 AM EDT

Venus @ greatest brilliancy (- 4.6)

Sept. 28

Fri.

   

Parker Solar Probe Venus flyby #1

Oct.

   

   

Solar Orbiter ((ESA mission) launched

Oct. 3 Wed.   New Horizons Trajectory Correction Maneuver (?)

Oct. 5

Fri.

   

BepiColombo Mercury orbiter launched

Oct. 13

Sat.

All day

Astronomy Day (Fall)

Oct. 17

Wed.

   

Winter solstice, N. Hemisphere of Mars

Oct. 21

Sun.

2:00 PM EDT

Orionid meteors peak. (Poor.)

Oct. 23

Tue.

9:00 PM EDT

Uranus @ opposition

Oct. 26

Fri.

10:11 AM EDT

Venus @ inferior conjunction

Oct. 29

Mon.

5:08 PM EDT (SCET)

Juno Jupiter orbiter Perijove #16

Oct. 30 Tue.   Second Falcon Heavy launch; payload includes LightSail 2.

Nov. 1

Thur.

   

Parker Solar Probe perihelion #1

Nov. 4

Sun.

1:00 AM EST / 2:00 AM EDT

Daylight Saving Time ends

Nov. 6

Tue.

9:59 AM EST

Mercury @ greatest elongation east (23°)

Nov. 17

Sat.

6:00 PM EDT

Juno @ opposition

Nov. 17

Sat.

7:00 PM EST

Leonid meteors peak. (Poor.)

Nov. 20 Tue.   New Horizons Trajectory Correction Maneuver (?)

Nov. 26

Mon.

 3:00 PM EST

InSight lands in Elysium Planitia

Nov. 26

Mon.

6:00 PM EST

Jupiter @ superior conjunction

Nov. 26

Mon.

9:00 PM EST

Mercury @ superior conjunction

Dec.

   

   

Boeing CST-100 Starliner launched with human crew to ISS

Dec. 1

Sat.

8:00 PM EDT

Venus @ greatest brilliancy (mag. - 4.9)

Dec. 6

Thur.

4:11 PM EST

Earliest sunset of year (4:11:48 PM EST)

Dec. 12

Wed.

6:33 PM EST

Comet 46P/Wirtanen @ perihelion (157.9 million km / 98.1 million mi)

Dec. 14

Fri.

8:00 AM EST

Geminid meteors peak. (Poor.)

Dec. 15

Sat.

7:00 AM EST

Mercury @ greatest elongation west (18°)

Dec. 16

Sun.

9:56 AM EST

Comet 46P/Wirtanen closest (11.5 million km / 7.1 million mi / 30 L.D.)

Dec. 21

Fri.

6:58 AM EST - 7:12 AM EST

Venus occults HIP72373 (mag. 5.9) (sunrise: 7:10 AM)

Dec. 21

Fri.

12:02 PM EST (SCET)

Juno Jupiter orbiter Perijove #17

Dec. 21

Fri.

5:22 PM EST

December (Winter) Solstice

Dec. 22

Sat.

4:00 PM EST

Ursid meteors peak (poor)

Dec. 25 Tue.   New Horizons begins Core Phase

 

     


   

    Supernova Style Science News  with Ms. Julie Seven Sage

    


          

July 15, 2018 - 10:00 PM EDT