324 Bamberga

324 Bamberga

Asteroid 324 Bamberga at opposition in September 2013.

Being one of the largest known asteroids, with a diameter of about 255 km, its magnitude however varies greatly due to a very high orbital eccentricity.
It is brightest on September 13, at magnitude +8.1, after which it fades again beyond visibility in amateur telescopes. It takes 22 years before it reappears at this magnitude.
It makes a close approach of about 0.78 AU at perihelion, no other asteroid so large gets so close.

The asteroid was discovered in 1892 and is named after the German city Bamberg.

The animated GIF which can be viewed below shows the movement in the sky of this asteroid during the period of just 2 days (Sep. 03 and Sep 04, 2013).

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Maximum size: 1200 x 900px – Animated GIF

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The last tab is used for any comments regarding the image, focus, framing, conditions etc.

Image data

Name  :  324 Bamberga
Type  :  Asteroid
Apparent magnitude  :  12 to 8.1
Distance  :  1.77 – 3.59 AU
Diameter  :  255 km
Mass  : 
Orbital period  :  4.4 yr
Other designations  : 
Image date  :  Sep. 03 & 04, 2013
Light frames  :  5x 3 min x 2. Ha unbinned
Total integration  :  2x 15 min
Dark frames  :  5x unbinned
Flat frames  :  20x unbinned
Created with an A3 size Posterpoweruk flatfield panel
Bias frames  : 
Software used  :  CCDOps, CCDSoft, ImagesPlus, Photoshop CS4
Processing  :  CCDOPS was used for focussing. Image Acquisition was done using CCDSoft.
All separate frames were calibrated, aligned and stacked in ImagesPlus 2.8.
Photoshop CS4 was used for further processing – curves adjustment, levels adjustment, etc.
Telescope  :  TMB/LOMO 80/480
Corrector  :  Televue 2″ TRF 2008 flattener/reducer with 15% decrease focal length: 384mm f/4.8
Mount  :  Losmandy G-11
Camera  :  SBIG ST-8300M
Guide camera  :  Atik 1HS Mono
Guide scope  :  Vixen VMC110L
Autoguide software  :  PHD Guiding
Filters  :  Baader 2″ 7nm Ha + IDAS LPS-P2
Location  :  Landgraaf, The Netherlands
Comment  :  Not one of the best images due to noise issues, but it clearly shows the movement of the asteroid during these 2 days

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