SATOBS ML (4353), 15 March 2017: USA 186, NOSS 3-8 (NROL-79)

From: Marco Langbroek via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 16 Mar 2017 01:59:25 +0100
42058 17 011A   4353 P 20170315000842250 17 75 2356046+811020 56
42065 17 011B   4353 P 20170315000842250 17 75 2252122+794630 56

28888 05 042A   4353 G 20170315193222250 17 75 0344146+220840 56 S+015 10
28888 05 042A   4353 G 20170315193224250 17 75 0338072+233740 56 S+015 10
28888 05 042A   4353 G 20170315193242250 17 75 0237446+338110 56 S+010 10
28888 05 042A   4353 G 20170315193244250 17 75 0230314+347950 56 S+010 10

42058 17 011A   4353 G 20170315232552250 17 75 1917240+593080 56 S
42058 17 011A   4353 G 20170315232632250 17 75 1919494+530510 56 S
42058 17 011A   4353 G 20170315232702250 17 75 1921326+489600 56 S
42065 17 011B   4353 G 20170315232552250 17 75 1918312+571970 56 S
42065 17 011B   4353 G 20170315232632250 17 75 1920403+512490 56 S
42065 17 011B   4353 G 20170315232702250 17 75 1922166+473510 56 S

-------------------------------------------------------------------------
Canon EOS 60D + SamYang 1.4/85 mm, 800 ISO + ASTRORECORD astrometric
software.
What these numbers mean: http://www.satobs.org/position/IODformat.html
-------------------------------------------------------------------------



The evening of March 15-16 was very clear. I imaged USA 186 passing just south
of the Pleiades, and being of naked eye visibility. It flared to mag 0 near
19:32:50 UT (March 15).

Later that night I observed the NROL-79 payloads (NOSS 3-8). The A component was
~1 second late, the B-component 2.8 s early.

Inluded a bove is also one observation on each component from the previous
night. This has a styory attached to it. I had set up the camera, during a
clearing. But just before the pass, clouds rolled in: a kind of mottled cloud
cover, with a star here and there. I took some images, not expecting to capture
something. Much to my surprise, the satellites were nevertheless visible through
the cloud cover on the images, with enough reference stars around them. I only
measured one image, where I was quite sure the start of the trails were real
trail starts.

- Marco


-----
Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
e-mail: sattrackcam_at_langbroek.org

Cospar 4353 (Leiden):     52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
Station (b)log: http://sattrackcam.blogspot.com
Twitter: _at_Marco_Langbroek
-----

-----
Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
e-mail: sattrackcam_at_langbroek.org

Cospar 4353 (Leiden):     52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
Station (b)log: http://sattrackcam.blogspot.com
Twitter: _at_Marco_Langbroek
-----
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Received on Wed Mar 15 2017 - 20:00:13 UTC

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