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CCD photometry and visual observations of V1663 Aquilae (Nova Aquilae 2005).
We present CCD V and I band photometry and visual observations of V1663Aquilae (Nova Aquilae 2005). This was a classical fast nova, probably oftype Ba, observed for the first time on 2005 June 9. Maximum lightoccurred at HJD= 2453531.2 +/- 0.2, when the apparent V magnitude was10.7 +/- 0.1 and the V-I colour index 3.1. Decline times were t2,V= 17d,t2,I= 18d, t3,V= 32d and t3,I= 35d. We derived a maximum absolute Vmagnitude of -7.8 +/- 0.2, colour excess E(B-V)= 2, extinction AV= 6magnitudes and distance d= 2.9 +/- 0.4 kpc. After maximum the V-I colourindex remained between 3.1 and 3.4 for 50 days, then gradually reducedas the nova became bluer with increasing age. We saw no direct evidenceof dust emission although this could have contributed to the highextinction in the direction of the nova.
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Observation and Astrometry data
| Constellation: | Adler |
| Right ascension: | 19h03m44.97s |
| Declination: | +05°04'10.6" |
| Apparent magnitude: | 7.923 |
| Distance: | 377.358 parsecs |
| Proper motion RA: | -1.3 |
| Proper motion Dec: | 6.1 |
| B-T magnitude: | 9.85 |
| V-T magnitude: | 8.083 |
Catalogs and designations:
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INHABITED SKY
