. . . . . "V1668 Cygni es el nombre que los astr\u00F3nomos le dieron a la nova aparecida en la constelaci\u00F3n de Cygnus en el a\u00F1o 1978. La nova alcanz\u00F3 un brillo m\u00E1ximo de magnitud 6."@es . . . . . . "\u5929\u9E45\u5EA7V1668\uFF08V1668 Cygni\uFF09\u662F\u4E00\u9897\u4F4D\u4E8E\u5929\u9E45\u5EA7\u7684\u65B0\u661F\uFF0C1978\u5E74\u7206\u53D1\u3002\u7206\u53D1\u65F6\u6700\u4EAE\u89C6\u661F\u7B49\u4E3A6\u7B49\u3002"@zh . . "\u5929\u9E45\u5EA7V1668\uFF08V1668 Cygni\uFF09\u662F\u4E00\u9897\u4F4D\u4E8E\u5929\u9E45\u5EA7\u7684\u65B0\u661F\uFF0C1978\u5E74\u7206\u53D1\u3002\u7206\u53D1\u65F6\u6700\u4EAE\u89C6\u661F\u7B49\u4E3A6\u7B49\u3002"@zh . . . "V1668 Cygni was a nova that appeared in the northern constellation of Cygnus, situated a couple of degrees to the southeast of the star Rho Cygni. It was discovered by Canadian variable star observer Warren Morrison on September 10, 1978, and reached a peak brightness of around 6.22 apparent magnitude on September 12. The luminosity of the source at this time was about 100,000 times the brightness of the Sun, and likely remained at that level for several months. The expansion velocity of the nova shell was deduced through spectroscopy to be 1,300 km/s."@en . . . . . . . "1001735550"^^ . . . "6.2"^^ . . . . . . "7748"^^ . . . . . . . . "V1668 Cygni (ou Nova Cygni 1978) \u00E9tait une nova qui survint en 1978 dans la constellation du Cygne. Elle atteignit une magnitude minimale (correspondant \u00E0 une luminosit\u00E9 maximale) de 6."@fr . . "\u5929\u9E45\u5EA7V1668"@zh . . "V1668 Cygni var en nova som upptr\u00E4dde i stj\u00E4rnbilden Svanen i september 1978. Den maximala magnituden blev +6."@sv . "V1668 Cygni"@en . . . . . . "V1668 Cygni"@de . . "0.98"^^ . . . "17600"^^ . . . . . "V1668 Cygni var en nova som upptr\u00E4dde i stj\u00E4rnbilden Svanen i september 1978. Den maximala magnituden blev +6."@sv . . . . . "V1668 Cygni es el nombre que los astr\u00F3nomos le dieron a la nova aparecida en la constelaci\u00F3n de Cygnus en el a\u00F1o 1978. La nova alcanz\u00F3 un brillo m\u00E1ximo de magnitud 6."@es . . . . . . . . . . "White dwarf"@en . . . . . . "V1668 Cygni"@sv . . "2377779"^^ . . "V1668 Cygni"@es . . "V1668 Cygni (ou Nova Cygni 1978) \u00E9tait une nova qui survint en 1978 dans la constellation du Cygne. Elle atteignit une magnitude minimale (correspondant \u00E0 une luminosit\u00E9 maximale) de 6."@fr . "V1668 Cygni"@fr . "V1668 Cygni war eine Nova, die 1978 im Sternbild Schwan aufleuchtete und eine Helligkeit von 6 mag erreichte."@de . "5400"^^ . . "V1668 Cygni was a nova that appeared in the northern constellation of Cygnus, situated a couple of degrees to the southeast of the star Rho Cygni. It was discovered by Canadian variable star observer Warren Morrison on September 10, 1978, and reached a peak brightness of around 6.22 apparent magnitude on September 12. The luminosity of the source at this time was about 100,000 times the brightness of the Sun, and likely remained at that level for several months. The expansion velocity of the nova shell was deduced through spectroscopy to be 1,300 km/s. After peak brightness, the lightcurve showed a smooth power-law decline with no major fluctuations. The decline in brightness was rapid, dropping by three magnitudes in 24 days. An optically thin shell of dust was created by the outburst that reached peak opacity after 50\u201360 days. The lack of a silicate feature in the infrared spectrum of this shell suggests the dust grains consisted of graphite, possibly condensed on atoms of cohenite. A 1994 analysis of the light curve showed the mass of the white dwarf source is about equal to the Sun. Warren Morrison was awarded the 1979 Ken Chilton prize of the RASC primarily for this discovery."@en . . . "V1668 Cygni war eine Nova, die 1978 im Sternbild Schwan aufleuchtete und eine Helligkeit von 6 mag erreichte."@de . . . . . "J2000.0"@en . . .