Observed Passes of Satellites, Rocket Bodies (etc.) in 2021

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Christopher K.
Posts: 5640
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Observed Passes of Satellites, Rocket Bodies (etc.) in 2021

Post by Christopher K. »

This year's first Edge of Night twilight viewing session will take place on Friday 12 March from 5:45pm to 7:45pm.
Christopher K.
Posts: 5640
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2021

Post by Christopher K. »

Well, here's tomorrow night's itinerary...
6:10pm = “civil twilight” begins (search for crepuscular rays)
~6:21pm = appearance of star Sirius [mag -1.6]
6:35pm = “civil twilight” ends; “nautical twilight” begins
~6:36pm = appearance of star Capella [mag 0.0] and star Rigel [mag 0.1]
~6:38pm = appearance of star Procyon [mag 0.3]
~6:39pm = appearance of star Betelgeuse [mag 0.4]
~6:42pm = appearance of star Aldebaran [mag 0.6]
~6:45pm = appearance of planet Mars [mag 1.1]
~6:46pm = appearance of Pleiades Star Cluster [mag 1.2]
~6:50pm = appearance of star Bellatrix [mag 1.6]
~6:53pm = appearance of star Polaris (the North Star) [mag 1.9]
~6:54pm = appearance of star Saiph [mag 2.0]
6:54pm to 7:14pm = possible sighting of low star Canopus [mag -0.9]
~6:55pm = appearance of The Belt of Orion [mag 2.2]
7:00pm to 7:11pm = magnitude 2.3 pass of H-IIA 202 rocket body
7:03pm = "nautical twilight" ends; "astronomical twilight" begins
7:05pm to 7:14pm = magnitude 1.4 pass of SJ-16-02 (unknown Chinese)
~7:06pm = appearance of The Kids of Auriga [mag 3.6]
7:07pm to 7:17pm = magnitude 2.5 pass of Cosmos 2278 rocket body
~7:12pm = appearance of The Orion Nebula [mag 4.0]
7:21pm to 7:31pm = magnitude 2.3 pass SL-16 rocket body
7:30pm to 7:32pm = magnitude 2.4 pass of Abrixas rocket body
7:30pm to 7:35pm = magnitude 1.6 pass of Hubble Space Telescope
7:31pm = "astronomical twilight" ends; night begins

The itinerary can be downloaded from...
http://hrpo.lsu.edu/programs/edge.html

Below is the NOAA forecast for HRPO's planned viewing time of 5:45pm to 7:45pm Friday...
precipitation potential, 1%
sky cover, 47%
relative humidity, 69%
temperature, 23˚C
surface wind, SE 10 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time the transparency rating will be "too cloudy to forecast" (0 out of 5) and the seeing rating will be "poor" (2 out of 5).
Christopher K.
Posts: 5640
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2021

Post by Christopher K. »

Below is the NOAA forecast for HRPO's planned viewing time of 5:45pm to 7:45pm Friday...
precipitation potential, 2%
sky cover, 53%
relative humidity, 66%
temperature, 24˚C
surface wind, SE 10 km/h

Danko's Clear Dark Sky states that during HRPO's viewing time both the transparency rating and the seeing rating will be "average" (3 out of 5).

The 12 March 2021 rating is...
EXCELLENT
VERY GOOD
GOOD
FAIR
POOR
BAD
Christopher K.
Posts: 5640
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes (Predicted for 2021 March 18)

Post by Christopher K. »

Upcoming predicted passes for Thursday the 18th:
International Space Station, max mag -3.8 while moving SW to NE (max altitude 82˚SE at 7:38pm).
---It will pass close to Betelgeuse, through Gemini, then east of the Big Dipper.

Afterward a train of thirty-nine STARLINKs will pass into the Baton Rouge sky between 7:56pm and 8:09pm, moving from the northwest to the southeast. The first seventeen will peak in the northeast at anywhere from eighty to eighty-nine degrees. The next two will pass directly overhead. The next one will peak in the southeast at eighty-nine degrees. The final nineteen will peak in the southwest at anywhere from eighty-nine to eighty degrees. They are predicted to brighten to anywhere from magnitude 2.6 to 2.7.

All the STARLINKs will pass very close to or through Auriga then Gemini.

Sadly, amateur skygazers now have to wait an "extra hour" for any particular celestial object or event due to Daylight Time...
http://www.brastro.org/dst.html

Go to Chris Peat's Heavens Above website and choose your location for more accurate timeframes.
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