<sod>  
 So if a really bright comet suddenly came, we would only get notice a month or so notice before it's visible? Or how long before it comes is it usually predictable?--[[User:Sonjaaa|Sonjaaa]] 04:25, 21 August 2006 (UTC)
 
It depends on how early the comet is detected and the comet's orbit. A number of automated telescopes, that are used for NEO searches, sometimes discover long period comets when they are very faint. Comet C/2002 T7 LINEAR was discovered when it was 17th magnitude and astronomers had almost two years before it reached perihelion. ~ [[User:LawfulGoodThief]] 06:03, 26 August 2006 (UTC) <eod> <sod> 
 So if a really bright comet suddenly came, we would only get notice a month or so notice before it's visible? Or how long before it comes is it usually predictable?--[[User:Sonjaaa|Sonjaaa]] 04:25, 21 August 2006 (UTC)
 
It depends on how early the comet is detected and the comet's orbit. A number of automated telescopes, that are used for NEO searches, sometimes discover long period comets when they are very faint. Comet C/2002 T7 LINEAR was discovered when it was 17th magnitude and astronomers had almost two years before it reached perihelion. ~ [[User:LawfulGoodThief]] 06:03, 26 August 2006 (UTC)

I think the current visible comets section needs to be frequently updated. It is now November, not October. [[User:AstroHurricane001|AstroHurricane001]] 00:41, 21 November 2006 (UTC) <eod>