RFO

What's Up in the Night Sky

Here's a month-by-month listing of astronomical predictions for the year, compiled by
Jack Welch, RFO astronomy instructor.

 

Abbreviations

Astr Twi/AT -Astronomical Twilight
Cal - Callisto
Civ Twi/CT - Civil Twilight
Cr - Crescent
Disap - Disappear
Dbl Tr - Double Tansit
E - End/Exit
Ec/Ecl - Eclipse
EcD - Eclipse disappearance
EcR - Eclipse reappearance
Eur - Europa
Ex - Exit
Gan - Ganymede
Gr El - Greatest Elongation
Jup - Jupiter
Lun - Lunar
Max - Maximum
Mer - Mercury
Min - Minimum
Mn - Moon
Naut Twi/NT - Nautical Twilight
Nr - Near
Occ - Occultation
OcD - Occultation disappearance
OcR - Occultation reapparance
Opp - Opposition
Pen - Penumbral
Reap - Reappear
Qtr - Quarter
Sat - Saturn /Satellite
Sh - Shadow
S/St - Start
Stat - Stationary
Tot - Total
Tr - Transit
V Nr - Very Near
Ven - Venus
Zod Lt - Zodiacal Light

 

Observing

Upcoming Observing Highlights

November 2018
  • Sunday, 11/4/2018 - DST ends - Time: 02:00
    • -
  • Sunday, 11/4/2018 - Algol min - Time: 03:30
    • Algol eclipse minimum is at 0335.
  • Wednesday, 11/7/2018 - Algol min - Time: 00:30
    • Algol eclipse minimum is at 0024.
  • Wednesday, 11/7/2018 - New Moon - Time: 08:00
    • -
  • Thursday, 11/8/2018 - 2.2% CrMn - Time: 17:30
    • Look for the very thin crescent moon 6° high 28° south of due west 30 minutes after sunset (or at 1733 calculated for the RFO site).
  • Friday, 11/9/2018 - 6% CrMn - Time: 17:30
    • -
  • Friday, 11/9/2018 - Algol min - Time: 21:00
    • Algol eclipse minimum is at 2113.
  • Monday, 11/12/2018 - Algol min - Time: 18:00
    • Algol eclipse minimum is at 1802.
  • Wednesday, 11/14/2018 - Occ of 30 Cap - Time: 17:00
    • At about 1723 the mag 5.4 star 30 Capricorni disappears behind the moon's dark limb 63° from the north cusp. 30 Cap is an extremely close equal double so may be observable as such for those with suitable equipment. (Calculated using Occult4 for the RFO site. Details will differ as distance from RFO increases.)
  • Thursday, 11/15/2018 - 1st Qtr - Time: 07:00
    • -
  • Thursday, 11/15/2018 - Mn Vnr Mar - Time: 20:00
    • -
  • Saturday, 11/17/2018 - Juno opp - Time: 14:00
    • The minor planet Juno is at opposition in Eridanus, reaching magnitude 7.4. RA/Dec: 3h53.9m/-3°20'.
  • Saturday, 11/17/2018 - Leonids Peak - Time: 14:30
    • Conditions are fairly favorable for viewing the Leonid meteors after the moon sets around 1am on the morning of 11/17 and after 2am on 11/18. The activity is expected to be low this year, around 10 per hour, but one never knows.
  • Thursday, 11/22/2018 - "Beaver" Moon - Time: 21:30
    • -
  • Friday, 11/23/2018 - Mn nr Aldebaran - Time: 19:00
    • The moon is near the bright red-orange star Aldebaran.
  • Saturday, 11/24/2018 - Algol min - Time: 05:30
    • Algol eclipse minimum is at 0518.
  • Saturday, 11/24/2018 - Occ of chi-1 Ori - Time: 20:00
    • At about 2001 the mag 4.4 star chi-1 Orionis reappears from behind the moon's dark limb at axis angle 227° (or 72° from the south cusp). (Calculated using Occult4 for the RFO site. Details will differ as distance from RFO increases.)
  • Saturday, 11/24/2018 - Nep stat - Time: 24:00
    • Neptune ends retrograde motion.
  • Tuesday, 11/27/2018 - Algol min - Time: 02:00
    • Algol eclipse minimum is at 0207.
  • Thursday, 11/29/2018 - Last Qtr - Time: 16:30
    • -
  • Thursday, 11/29/2018 - Algol min - Time: 23:00
    • Algol eclipse minimum is at 2256.

December 2018
  • Saturday, 12/1/2018 - Ven brightest - Time: 24:00
    • -
  • Sunday, 12/2/2018 - Algol min - Time: 19:30
    • Algol eclipse minimum is at 1945.
  • Monday, 12/3/2018 - CrMn nr Ven - Time: 05:30
    • -
  • Tuesday, 12/4/2018 - Mer in E thru 12/30 - Time: 06:30
    • Mercury has a moderately good apparition, reaching a maximum altitude 45 minutes before sunrise of 10° on 12/14. Mercury will be very near the bright star Graffias on the mornings of 12/15 and 12/16 (use binoculars).
  • Thursday, 12/6/2018 - Mar Vnr Nep - Time: 19:00
    • Mars is VERY near the much dimmer and smaller Neptune.
  • Thursday, 12/6/2018 - New Moon - Time: 23:30
    • -
  • Friday, 12/7/2018 - Mar Vnr Nep - Time: 19:00
    • Mars is VERY near the much dimmer and smaller Neptune.
  • Saturday, 12/8/2018 - 2.9% CrMn - Time: 17:00
    • Look for a very thin crescent moon 9° high in the southwest 30 minutes after sunset.
  • Friday, 12/14/2018 - Geminids Peak - Time: 04:30
    • Conditions are VERY favorable for the Geminid meteor shower. A crescent moon sets around 11pm on 12/13 leaving a dark sky for these bright meteors. About 120 meteors per hour are typical at peak.
  • Friday, 12/14/2018 - Mn nr Mar - Time: 19:00
    • -
  • Saturday, 12/15/2018 - 1st Qtr - Time: 04:00
    • -
  • Monday, 12/17/2018 - Algol min - Time: 04:00
    • Algol eclipse minimum is at 0350.
  • Wednesday, 12/19/2018 - Occ of mu Cet - Time: 00:30
    • At about 0044 the mag 4.3 star mu Ceti disappears behind the moon's dark limb 21° from the south cusp. Mu Cet is an extremely close multiple so may be observable as such for those with suitable equipment. (Calculated using Occult4 for the RFO site. Details will differ as distance from RFO increases.)
  • Thursday, 12/20/2018 - Algol min - Time: 00:30
    • Algol eclipse minimum is at 0039.
  • Thursday, 12/20/2018 - Mn vnr Aldebaran - Time: 24:00
    • The moon is very near the bright red-orange star Aldebaran in Taurus. Use binoculars to appreciate the color.
  • Friday, 12/21/2018 - Jup Vnr Mer - Time: 06:30
    • Jupiter, emerging into the morning sky since about mid-month, passes VERY near Mercury this morning. While Jupiter is the brighter of the two, much smaller Mercury has greater surface brightness. Use binoculars or the lowest magnification scope eyepiece.
  • Friday, 12/21/2018 - Winter Solstice - Time: 14:30
    • The winter solstice is at 1423.
  • Saturday, 12/22/2018 - "Cold" Moon - Time: 10:00
    • -
  • Saturday, 12/22/2018 - Algol min - Time: 21:30
    • Algol eclipse minimum is at 2128.
  • Tuesday, 12/25/2018 - Algol min - Time: 18:30
    • Algol eclipse minimum is at 1817.
  • Saturday, 12/29/2018 - Last Qtr - Time: 01:30
    • -

January 2019
  • Saturday, 1/5/2019 - New Moon - Time: 17:30
    • -
  • Saturday, 1/5/2019 - Ven GEW - Time: 22:00
    • -
  • Sunday, 1/6/2019 - Ura stat - Time: 18:00
    • Uranus ends retrograde motion.
  • Sunday, 1/13/2019 - 1st Qtr - Time: 22:30
    • -
  • Sunday, 1/20/2019 - Total Lunar Eclipse - Time: 19:00
    • The sequence of events:
      18:36 Moon enters penumbra
      18:51 End of Astro Twilight
      19:33 Moon enters umbra
      20:41 Start of totality
      21:42 End of totality
      22:49 Moon exits umbra
      23:46 Moon exits penumbra
  • Sunday, 1/20/2019 - "Wolf" Moon - Time: 21:00
    • -
  • Monday, 1/21/2019 - Large Tides thru 1/23 - Time: 00:00
    • Large tides due to full moon 15 hours before perigee.
  • Sunday, 1/27/2019 - Last Qtr - Time: 13:00
    • -

February 2019
  • Monday, 2/4/2019 - New Moon - Time: 13:00
    • -
  • Tuesday, 2/12/2019 - 1st Qtr - Time: 14:30
    • -
  • Tuesday, 2/19/2019 - Large Tides thru 2/22 - Time: 00:00
    • Large tides due to full moon 7 hours after perigee.
  • Tuesday, 2/19/2019 - "Snow" Moon - Time: 08:00
    • -
  • Tuesday, 2/26/2019 - Last Qtr - Time: 03:30
    • -

March 2019
  • Wednesday, 3/6/2019 - New Moon - Time: 08:00
    • -
  • Sunday, 3/10/2019 - DST begins - Time: 02:00
    • -
  • Thursday, 3/14/2019 - 1st Qtr - Time: 03:30
    • -
  • Wednesday, 3/20/2019 - Vernal Equinox - Time: 15:00
    • The equinox occurs at 2:58pm.
  • Wednesday, 3/20/2019 - "Worm" Moon - Time: 18:30
    • -
  • Wednesday, 3/27/2019 - Last Qtr - Time: 21:00
    • -

April 2019
  • Friday, 4/5/2019 - New Moon - Time: 02:00
    • -
  • Wednesday, 4/10/2019 - Jup stat - Time: 10:00
    • Jupiter begins retrograde motion.
  • Friday, 4/12/2019 - 1st Qtr - Time: 12:00
    • -
  • Friday, 4/19/2019 - "Pink" Moon - Time: 04:00
    • -
  • Friday, 4/26/2019 - Last Qtr - Time: 15:30
    • -
  • Monday, 4/29/2019 - Sat stat - Time: 19:00
    • Saturn begins retrograde motion.

May 2019
  • Saturday, 5/4/2019 - New Moon - Time: 15:30
    • -
  • Saturday, 5/11/2019 - 1st Qtr - Time: 18:00
    • -
  • Saturday, 5/18/2019 - "Flower" Moon - Time: 14:00
    • -
  • Sunday, 5/26/2019 - Last Qtr - Time: 09:30
    • -

June 2019
  • Monday, 6/3/2019 - New Moon - Time: 03:00
    • -
  • Sunday, 6/9/2019 - 1st Qtr - Time: 23:00
    • -
  • Monday, 6/10/2019 - Jup opp - Time: 08:00
    • Jupiter is at opposition in Ophiuchus.
  • Monday, 6/17/2019 - "Strawberry" Moon - Time: 01:30
    • -
  • Friday, 6/21/2019 - Summer Solstice - Time: 09:00
    • The solstice occurs at 8:54am.
  • Friday, 6/21/2019 - Nep stat - Time: 21:00
    • Neptune begins retrograde motion.
  • Tuesday, 6/25/2019 - Last Qtr - Time: 03:00
    • -

July 2019
  • Tuesday, 7/2/2019 - New Moon - Time: 12:00
    • -
  • Tuesday, 7/9/2019 - 1st Qtr - Time: 04:00
    • -
  • Tuesday, 7/9/2019 - Sat opp - Time: 22:00
    • Saturn is at opposition in Sagittarius.
  • Tuesday, 7/16/2019 - "Buck" Moon - Time: 14:30
    • -
  • Wednesday, 7/24/2019 - Last Qtr - Time: 18:30
    • -
  • Wednesday, 7/31/2019 - New Moon - Time: 20:00
    • -

August 2019
  • Thursday, 8/1/2019 - Large Tides thru 8/3 - Time: 00:00
    • Large tides due to new moon 28 hours before perigee.
  • Wednesday, 8/7/2019 - 1st Qtr - Time: 10:30
    • -
  • Sunday, 8/11/2019 - Jup stat - Time: 09:00
    • Jupiter ends retrograde motion.
  • Sunday, 8/11/2019 - Ura stat - Time: 22:00
    • Uranus begins retrograde motion.
  • Tuesday, 8/13/2019 - Ven SC - Time: 23:00
    • -
  • Thursday, 8/15/2019 - "Sturgeon" Moon - Time: 05:30
    • -
  • Friday, 8/23/2019 - Last Qtr - Time: 08:00
    • -
  • Friday, 8/30/2019 - Large Tides thru 9/2 - Time: 00:00
    • Large tides due to new moon 6 hours before perigee.
  • Friday, 8/30/2019 - New Moon - Time: 03:30
    • -

September 2019
  • Sunday, 9/1/2019 - Large Tides thru 9/2 - Time: 00:00
    • Large tides due to new moon 6 hours before perigee.
  • Thursday, 9/5/2019 - 1st Qtr - Time: 20:00
    • -
  • Tuesday, 9/10/2019 - Nep opp - Time: 24:00
    • Neptune is at opposition in Aquarius.
  • Friday, 9/13/2019 - "Harvest" Moon - Time: 21:30
    • -
  • Tuesday, 9/17/2019 - Sat stat - Time: 23:00
    • Saturn ends retrograde motion.
  • Saturday, 9/21/2019 - Last Qtr - Time: 19:30
    • -
  • Monday, 9/23/2019 - Autumnal Equinox - Time: 01:00
    • The equinox occurs at 12:50am.
  • Saturday, 9/28/2019 - New Moon - Time: 11:30
    • -
  • Sunday, 9/29/2019 - Large Tides thru 10/2 - Time: 00:00
    • Large tides due to new moon 16 hours after perigee.

October 2019
  • Tuesday, 10/1/2019 - Large Tides thru 10/2 - Time: 00:00
    • Large tides due to new moon 16 hours after perigee.
  • Saturday, 10/5/2019 - 1st Qtr - Time: 10:00
    • -
  • Sunday, 10/13/2019 - "Hunter's" Moon - Time: 14:00
    • -
  • Monday, 10/21/2019 - Last Qtr - Time: 05:30
    • -
  • Sunday, 10/27/2019 - New Moon - Time: 20:30
    • -
  • Monday, 10/28/2019 - Ura opp - Time: 01:00
    • Uranus is at opposition in Aries.

November 2019
  • Sunday, 11/3/2019 - DST ends - Time: 02:00
    • -
  • Monday, 11/4/2019 - 1st Qtr - Time: 02:30
    • -
  • Tuesday, 11/12/2019 - "Beaver" Moon - Time: 05:30
    • -
  • Tuesday, 11/19/2019 - Last Qtr - Time: 13:00
    • -
  • Tuesday, 11/26/2019 - New Moon - Time: 07:00
    • -
  • Wednesday, 11/27/2019 - Nep stat - Time: 12:00
    • Neptune ends retrograde motion.

December 2019
  • Tuesday, 12/3/2019 - 1st Qtr - Time: 23:00
    • -
  • Wednesday, 12/11/2019 - "Cold" Moon - Time: 21:00
    • -
  • Wednesday, 12/18/2019 - Last Qtr - Time: 21:00
    • -
  • Saturday, 12/21/2019 - Winter Solstice - Time: 20:30
    • The solstice occurs at 8:19pm.
  • Wednesday, 12/25/2019 - New Moon - Time: 21:00
    • -

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