ISS crosses the Moon 6/15/2006 6:56 MDT
Looks like this is still good for tomorrow morning. 6h56m52.60s ISS Crosses the disk of Moon. Separation=0.178° Position Angle=329.0° Angular Velocity=30.9'/s. Transit duration=0.79s Angular diameter=23.1" size=73.0m x 44.5m x 27.5m Satellite at Azimuth=209.3° SSW Altitude= 22.9° Distance=801.0 km Magnitude=-0.5mag Satellite apparently moves to clock-face direction 8:45 o'clock Closest Point Longitude=111°49'43" W Latitude=+40°47'29" Distance=6.17 km Azimuth= 48.6° NE Path direction: 138.6° SE ground speed: 7.615 km/s width: 19.2 km max. duration: 1.1 s Checking the centerline track out, it starts in downtown Bountiful and then runs over the foothills, and crosses Emigration Canyon Road below Ruth's Diner. The best observering point probably will be the This is the Place Monument or up in the northeast corner of Research Park. A cloud out is possible. The NOAA weather loop shows a front moving in, but not until after 8:00am. As Patrick noted, the Moon will be very low: 22 deg altitude at this time. Sunrise is at 4:56am. - Canopus56 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
I'll try from my shop in NSL, will have been at work for an hour by then. Only a few miles from the start point, maybe I'll get lucky. Thanks! --- Canopus56 <canopus56@yahoo.com> wrote:
Looks like this is still good for tomorrow morning.
6h56m52.60s
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--- Chuck Hards <chuckhards@yahoo.com> wrote:
I'll try from my shop in NSL, will have been at work for an hour by then. <snip>
The Sun will be up so I do not know if the ISS at -0.5 mag will be visible as it approaches. It may be a "negative" apparent transit - a black ISS traversing a blue-white Moon. The transit duration is only 1 second. I also find having a watch preset to accurate UTC time necessary. Personally, I have a pocket shortwave radio and listen to the NIST WWV Shortwave Time Broadcast. Frequencies (Mhz) 2.5, 5, 10, 15, 20. In my experience, the ISS transits are usually 2 or 3 minutes after the posted CalSky time. - Canopus56 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Yep, I was planning on using my shortwave. Long-time companion at the eyepiece. (See S&T, October 2000, page 139. Top left photo) I did notice the duration in your first post, and made a mental note to not expect to see the approach- but you never know. Even a glint would be nice, especially if I don't see a transit. Thanks for the CalSky lag tip. --- Canopus56 <canopus56@yahoo.com> wrote:
The Sun will be up so I do not know if the ISS at -0.5 mag will be visible as it approaches. It may be a "negative" apparent transit - a black ISS traversing a blue-white Moon.
The transit duration is only 1 second.
I also find having a watch preset to accurate UTC time necessary. Personally, I have a pocket shortwave radio and listen to the NIST WWV Shortwave Time Broadcast. Frequencies (Mhz) 2.5, 5, 10, 15, 20. In my experience, the ISS transits are usually 2 or 3 minutes after the posted CalSky time.
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No sighting from North Salt Lake. Moon centered in a 3-degree FOV. It wasn't a total washout; the moon was transited by a kestral. --- Canopus56 <canopus56@yahoo.com> wrote:
Looks like this is still good for tomorrow morning.
6h56m52.60s
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--- Chuck Hards <chuckhards@yahoo.com> wrote:
No sighting from North Salt Lake. Moon centered in a 3-degree FOV.
I didn't see it either - or the -0.5 mag approach - between the advancing sunrise and the high light clouds. I suspect it needs hi-magnification because of the small angular size of the ISS. Have to look for future passages closer to twilight. Nice view of the Mare Imbrium impact basin compensated for not seeing the object. - Canopus56 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
I was a couple of miles off the track, so my attempt was just a crapshoot, really. --- Canopus56 <canopus56@yahoo.com> wrote:
I didn't see it either - or the -0.5 mag approach - between the advancing sunrise and the high light clouds. I suspect it needs hi-magnification because of the small angular size of the ISS. Have to look for future passages closer to twilight.
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participants (2)
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Canopus56 -
Chuck Hards