Tyc 5881-1190-1

[Karls48]

Two nights ago I was imagining TYC 5881-774-1 15 LY distant star and when I did photometry on the images, the other star TYC5881-1190-1 come up with this light curve. I don’t know if I should trust my results because – the star is saturated (it was not target) and my planetarium program list it as constant star.
Any comments appreciated

Main Mission Variability
Observed magnitude at maximum and minimum luminosities
Mag at max, Hp: 8.36 (5th percentile)
Mag at min, Hp: 8.42 (95th percentile)
Type of variability: "Constant" star or, more strictly, stars not detected as variable. These include stars used as photometric standards.

Matched 53 of 231 image and 87 catalog stars;
Average residual 0.1 arcsec; order 4
RA 03h 51m 20.4s, Dec -15° 44' 35.7"
Pos Angle +00° 38.6', FL 1051.6 mm, 1.27"/Pixel

[Rob_K]

Hi Karl. The star is not in AAVSO's VSX (variable star catalogue) but it appears to have been observed with ASAS-3 and has the name ASAS 035045-1534.7. For some reason I have never been able to access the ASAS data and lightcurves but you may have better luck. Go to this URL: http://www.astrouw.edu.pl/~gp/asas/asas3_catalog.html Then copy & paste this into the search box:

3:50:45.0,-15:34:39

Then click search and it should bring up the star and light curve. Be interested to see what's there. :thumbsup:

Planetarium programs seem to have very little variable star info. Most variables I come across are shown with no variability in Starry Night.

Cheers -

[Karls48]

Thanks Rob, I was able to locate ASAS 035045-1534.7. in their Catalogue but when I try to get Light Curve I get Server error.
It is hard on my old brain with every star having dozen or more ID numbers and in so many catalogues.
Anyhow it makes hobby more interesting if you ( now and then) come up with unexpected result.
Just recently I started using StarAnalyser - so I will probably ask more silly questions.

[Rob_K]

Ahh, I found the problem, the link I was using is an old interface "referencing data that were partly corrupted due to the RAID failure" (whatever that means!). Here's the current one: http://www.astrouw.edu.pl/asas/?page=aasc

Now the search brings up ASAS 035045-1534.7, but the light curve consists of a single data point. Might be worth following this star a bit more Karl.

Cheers -