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Wednesday, July 07, 2021

 

Some More Nice ISS Passes Over the Next Few days (7-12 July, 2021)

The ISS as seen from Melbourne  on the evening of  Friday 9 July at 18:40 AEST. Simulated in Stellarium (the ISS will actually be a bright dot), the white line is the path of the ISS, the other lines are paths of other satellites. Click to embiggen.The ISS  as seen from Adelaide on the evening of  Thursday 8 July at 18:43 ACST. Simulated in Stellarium (the ISS will actually be a bright dot), the white line is the path of the ISS, the other lines are paths of other satellites. Click to embiggen.The ISS as seen from Perth on the evening of  Thursday 8 July at 17:38 AWST. Simulated in Stellarium (the ISS will actually be a bright dot), the white line is the path of the ISS, the other lines are paths of other satellites. Click to embiggen.
All sky chart showing local times from Heavens Above for Friday 9 July for Melbourne.All sky chart showing local  times from Heavens Above for Thursday 8 July for Adelaide.All sky chart showing local times from Heavens Above for  Thursday 8 July for Perth.

If it is not bucketing down rain where you are, over the next few days there are a series of  bright ISS passes in the late evening twilight/early evening. The ISS passes close to the Southern cross from Sydney and Hobart, and spectacularly through it for Melbourne. Brisbane, Adelaide and Darwin see it go through the tail of the scorpion or just underneath it. There are also some bright passes where it "winks out" as the ISS enters Earth's shadow. As well there a number of passes close to bright stars. 

The following tables are from data provided from Heavens Above. Particularly impressive passes are highlighted in yellow, passes entering the shadow in blue.

Passes from Adelaide (ACST)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-3.119:04:4310°SW19:07:2149°SW19:07:2149°SWvisible
08 Jul-3.418:17:3610°SW18:20:5644°SE18:23:1118°ENEvisible
08 Jul-0.419:55:2710°W19:56:1613°WNW19:56:1613°WNWvisible
09 Jul-1.619:07:2710°WSW19:10:2326°NW19:12:3614°Nvisible
10 Jul-2.718:19:5510°WSW18:23:1550°NW18:26:3410°NNEvisible
12 Jul-0.418:23:2510°W18:25:2014°NW18:27:1410°NNWvisible


Passes from Brisbane (AEST)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-1.618:03:1110°S18:04:1813°SSE18:04:1813°SSEvisible
08 Jul-2.218:51:1710°SW18:53:1130°SW18:53:1130°SWvisible
09 Jul-3.318:04:1310°SSW18:07:3040°SE18:09:3020°ENEvisible
10 Jul-1.218:54:1310°WSW18:56:5421°NW18:59:3410°Nvisible
11 Jul-2.418:06:3210°WSW18:09:4743°NW18:13:0110°NNEvisible
13 Jul0.018:11:0510°WNW18:11:5111°NW18:12:3710°NWvisible
16 Jul0.006:01:2610°NE06:02:3111°NE06:03:3510°ENEvisible


Passes from Darwin (ACT)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
10 Jul-3.619:59:5210°SW20:02:5166°SW20:02:5166°SWvisible
11 Jul-3.219:12:5310°SSW19:16:0537°SE19:19:1410°ENEvisible
12 Jul-0.620:03:1510°W20:05:2716°NW20:07:3910°NNWvisible
13 Jul-1.919:15:1110°WSW19:18:1835°NW19:21:2510°NNEvisible


Passes from Hobart (AEST) 

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-3.817:58:0010°SW18:01:2973°SSE18:04:1814°ENEvisible
07 Jul-0.719:35:4910°W19:37:2115°WNW19:37:2115°WNWvisible
08 Jul-1.518:47:5910°WSW18:50:5325°NW18:53:1113°Nvisible
09 Jul-2.318:00:3010°WSW18:03:4641°NW18:07:0010°NNEvisible
11 Jul-0.518:03:4610°W18:05:4915°NW18:07:5110°NNWvisible


Passes from Melbourne (AEST)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-2.617:58:4410°SSW18:01:4628°SSE18:04:1813°Evisible
07 Jul-1.419:35:2910°WSW19:37:2124°W19:37:2124°Wvisible
08 Jul-3.318:48:0410°WSW18:51:2861°NW18:53:1126°NNEvisible
09 Jul-3.818:00:4910°SW18:04:1675°SE18:07:4110°NEvisible
09 Jul-0.319:40:0210°WNW19:40:3710°NW19:41:1310°NWvisible
10 Jul-0.818:51:0810°W18:53:3618°NW18:56:0210°Nvisible
11 Jul-1.718:03:2410°WSW18:06:3132°NW18:09:3510°NNEvisible


Passes from Perth (AWST)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-2.419:08:2210°SW19:10:2431°SSW19:10:2431°SSWvisible
08 Jul-2.918:21:2210°SSW18:24:3132°SE18:26:1520°Evisible
08 Jul-0.419:58:4610°W19:59:2013°W19:59:2013°Wvisible
09 Jul-2.019:10:5510°WSW19:14:0232°NW19:15:4320°Nvisible
10 Jul-3.318:23:2810°SW18:26:5466°NW18:30:1610°NEvisible
12 Jul-0.618:26:4310°W18:29:0117°NW18:31:1710°Nvisible


Passes from Sydney (AEST)

Date Brightness Start Highest point End Pass type
(mag) Time Alt. Az. Time Alt. Az. Time Alt. Az.
07 Jul-2.518:00:3510°SSW18:03:3125°SE18:04:1823°ESEvisible
08 Jul-3.018:49:5010°WSW18:53:1152°NW18:53:1152°NWvisible
09 Jul-3.818:02:3310°SW18:06:0081°SE18:09:2410°NEvisible
10 Jul-0.618:53:2010°W18:55:1614°NW18:57:1210°NNWvisible
11 Jul-1.318:05:1610°WSW18:08:1226°NW18:11:0610°Nvisible

When and what you will see is VERY location dependent, so you need to use  Heavens Above  to get site specific predictions for your location, a small difference in location can mean the difference between the ISS passing over a star or planet or missing it completely. 

As always, start looking several minutes before the pass is going to start to get yourself oriented and your eyes dark adapted. Be patient, there may be slight differences in the time of the ISS appearing due to orbit changes not picked up by the predictions. Use the most recent prediction for your site.

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# posted by Ian Musgrave @ 1:55 pm
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