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CCD Images - Session 257 (2008-01-24)

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Objects Session Notes
Bullet 1685 Toro - Near Earth Asteroid (NEA) / Minor Planet
Bullet Z And - variable star
Bullet Astrometric & Photometric Monitoring
- SS Cyg (dwarf nova)
- BL Lac (Blazar)
- TZ Lyr, RX And, RU Peg (variables)



- Evening session (2.1hr), poor sky conditions, cloud developing. 
- CCD operation of -25 degC (at 72% average cooling). 
- main objective was to acquire images of certain selected stars of ongoing photometric and astrometric analysis, in particular SS Cyg and RX And
- Secondary objective was to attempt images of 6.2 km diameter NEA 1685 Toro as it passes near earth at 76 LD.  .

1685 Toro - Near Earth Asteroid (NEA) / Minor Planet

1685 Toro is a 6.2km  diameter asteroid which is passing by the earth today (2008-01-24) at a distance of 76 lunar distance (LD). A short sequence of images of shows its relatively rapid apparent motion.

1685 Toro passing through star field in Cetus
Image
CCD Image 
15 x 20s exposure (average combine), 2x2 binning, C Filter
2008-01-24 19:30hUT (#257067-81)
 
   
1685 Toro - detail
Image
CCD Image
15 x 20s exposure (aligned on asteroid)
  2x2 binning, C Filter
2008-01-24 19:30hUT (#257067-81)
 

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Z And (ZAND)

Z And  (Andromeda)
Second Brightening of Z And noted in photometric measurements of Z And on 2008-01-20 to 2008-01-24, 
(confirmed by further measurements on 2008-01-25)
Image
 
Earlier image of Z And
Image
 
Photometry  V & B  Bands
Image

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Astrometric and Photometric Monitoring

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This Web Page: CCD Images - Session 257  (2008-01-24)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site