Asteroid Zoo Talk

Quite clear faint asteroid

  • BartJSimpson by BartJSimpson

    Hi,
    I think I've found a quite clear but faint asteroid in this set. It's near a star which is near to the left edge. The asteroid is moving to the left.

    How can I find out the actual date and time when the picture was made? This would help to verify if the asteroid is known or not.

    Regards,
    Dirk

    Posted

  • MvGulik by MvGulik

    I'm not sure your up to the task. But here are some breadcrumbs.

    1. check out the image url's.
    2. check out the http://reporting.asteroidzoo.org/ page.
    3. if step two has no data, start with 07:00. (== 24:00 o'clock local telescope time.)

    There might be some additional information hiding in the fora that might be informational.
    But finding it is probably a bit cumbersome. But worth a try I think.

    Good luck.

    Posted

  • MvGulik by MvGulik

    I just can't help myself ... potential result for this AZ-set.


    (image is link to bigger version)

    Raw data:

    Name                            RA            Decl       R mag      Daily Motion       Eph. Uncert.
                                                                 RA     Decl      RA        Decl

(82353) 2001 MA2          00 47 21.795   -04 54 59.49   20.4      19.2     7.52   2.88E-03   1.95E-02
(114121) 2002 VU49        00 47 00.666   -04 57 29.66   20.2      26.0     8.76   3.01E-03   1.96E-02
(144671) 2004 FE130       00 47 13.687   -05 03 09.88   20.3       3.7     6.83   3.50E-03   4.04E-02
(338071) 2002 PJ27        00 47 02.650   -05 00 06.13   20.9      64.8    10.60   6.72E-03   2.96E-02
(340667) 2006 RX36        00 47 45.879   -04 46 27.88   21.0      14.5     3.02   4.80E-03   1.71E-02
(434518) 2005 SD164       00 47 37.429   -04 54 14.14   20.2      83.0     9.81   4.77E-03   1.59E-02

    Posted

  • BartJSimpson by BartJSimpson

    Thx a lot.

    So (338071) is a candidate for the asteroid I've seen in the picture set, (434518) would even fit better but this depends on the exact exposure time of the pictures and the difference to UTC.

    The date in the picture name seems to be the correct date when the picture was taken and coordinates can be determined via www.astrometry.net.

    But which program did you use to plot the graph?

    Regards,
    Dirk

    Posted

  • MvGulik by MvGulik

    candidate:
    Yep, at first glance (338071) and (434518) would be the main candidates.

    Trajectory (always a bit iffy) seems to suggest (434518).

    • The length of the drawn trajectory is one day, or 24H.

    Apparent magnitude also favors (434518).

    • Mag 20.2 is still possible to see, but seeing 20.9 is a lot harder.
    • AZ skips reporting its known asteroids that are above(dimmer) Mag 20. (erm, or was it 19)

    Date: One thing I'm not sure of is, if the day in the AZ/CSS-image-url is UTC or Local based. Something to keep in mind when the result seem way off.

    Plot: The basic plot comes from the "Asteroid Plot" tool at LOWELL ASTEROID SERVICES - BETA

    • The preview-image on the Lowell site is a relative poor quality (and kinda bugged at the moment), but with this "Online viewer for PDF, PostScript and Word" site you can the get a nicer one by using the supplied postscript images (try both links, as one is ... yep, kinda bugged.).
    • (The rest ... is a bit of local editing)

    PS/hint: See if you might have missed something in the AZ images.

    Posted

  • MvGulik by MvGulik

    Mentioned Asteroid Plot issues might have changed (possibly fixed).
    There relative old tools, that are planed to be replaced/upgraded ... somewhere in the future.

    Posted