Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

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

Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » February 8th, 2019, 4:24 pm

The first of three Edge of Night twilight viewing sessions take place the Friday before the change from Standard Time to the questionably-helpful Daylight time. That will be Friday 8 March from 5:30pm to 7:30pm. Below is the planned schedule...
6:08pm = “civil twilight” begins (search for crepuscular rays)
6:33pm = “civil twilight” ends; “nautical twilight” begins
7:01pm = "nautical twilight" ends; "astronomical twilight" begins
7:28pm = "astronomical twilight" ends
The event has no admission fee and is for all ages. HRPO personnel encourage patrons to bring binoculars.

Definitions of the various twilights:
http://aa.usno.navy.mil/faq/docs/RST_defs.php

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » February 13th, 2019, 11:02 am

PREDICTED FLARE
Iridium 97
Date: Friday 15 February
Time: 6:40pm CST
Altitude: 55˚
Azimuth: NNE


I won't write much more, but I will attempt to post any remaining predicted Iridium Flares brighter than magnitude -1.5. Anyone interested in spotting them should always go directly to Heavens Above to generate a more accurate sets of parameters based on location...
https://www.heavens-above.com/main.aspx

I won't post predictions more than seventy-two hours out.

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » March 8th, 2019, 3:17 pm

The NOAA forecast states there will be a ninety-three percent cloud cover during the Edge of Night time span (5:30pm to 7:30pm). It is highly unlikely there will be any portion of sky available for any extended portion of time. HRPO personnel will supplement the planned outdoor activities with some meteorite displays (twilight fireballs are rare but possible) and a tour of the 20OGS, as well as an introduction to the three raffle prizes for this year's International Astronomy Day.

More information:
http://hrpo.lsu.edu/programs/edge.html

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » June 26th, 2019, 2:41 pm

The summer version of The Edge of Night will take place on Friday 5 July from 8pm to 10pm; the event is for all ages. There is no admission fee and binoculars are strongly encouraged.

Below is the planned schedule...
8:00pm to 9:30pm = Moon viewing
8:10pm = “civil twilight” begins (search for crepuscular rays)
8:39pm = “civil twilight” ends; “nautical twilight” begins
8:44pm to 8:51pm = magnitude 2.0 pass of the Hubble Space Telescope
8:52pm to 9:04pm = magnitude 2.3 pass of a Centaur rocket
9:09pm to 9:18pm = magnitude 1.5 pass of the Lacrosse 5 rocket
9:12pm = “nautical twilight” ends; “astronomical twilight” begins
9:12pm to 9:22pm = magnitude 1.8 pass of Lacrosse 5
9:15pm to 10:00pm = Jupiter viewing
9:45pm to 10:00pm = Saturn viewing
9:47pm = “astronomical twilight” ends
This schedule is more accurate that the schedule on the HRPO site. As can be seen, there will be the pleasure of seeing a satellilte and the rocket that launched it within a few minutes of each other.

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » October 22nd, 2019, 3:24 pm

Upcoming predicted passes for tonight and tomorrow morning:
22 October = Chang Zheng 4B rocket body (Spacetrack #29507), max mag 1.8 while moving S to NW (max altitude 68˚W at 7:45pm).
23 October = Okean O rocket, max mag 2.0 while moving NE to S (max altitude 68˚SE at 6:23am).
23 October = International Space Station, max mag -3.5 while moving SW to NE (max altitude 51˚NW at 6:47am).

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » October 22nd, 2019, 3:32 pm

For those wondering, the remaining Iridium flares are only via the motions of Iridium 97.

Here are the current predictions for flares caused by sunlight reflected off of Iridium 97 (predictions centered on HRPO):
24 October = 7:36am (mag -6.1, 28˚SE)
27 October = 7:23am (mag -6.4, 29˚SE)

Christopher K.
Posts: 4809
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Observed Passes of Satellites, Rocket Bodies (etc.) in 2019

Post by Christopher K. » November 15th, 2019, 3:39 pm

The NOAA forecast is Excellent for the Edge of Night session, which begins in a little over an hour. Peat predicts that the HRPO location will see six potential visible passes...
*the Cosmos 2227 rocket, mag 2.5 beginning at 5:48pm
*the Cosmos 2297 rocket, mag 2.4 beginning at 5:48pm
*a Chang Zheng 3 rocket (Spacetrack #20474), mag 0.8 beginning at 6:02pm
*Cosmos 1633, mag 2.4 beginning at 6:18pm
*an Atlas V 401 rocket (Spacetrack #31702), mag 2.5 beginning t 6:24pm
*the GPS2-04 rocket, mag 2.1 beginning at 6:29pm
Please remember, this is HRPO's only public offering tonight. Regular nighttime viewing will occur tomorrow night from 7:30pm to 10pm.

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