by moladso » Sat Aug 27, 2011 11:02 pm
How fast it moves
http://www.astronomica.es
Copyright: Jaime Fernandez
Click here for aditional information and label free image.
This picture shows how fast comet C/2009 P1 Garradd moves relative to fixed star field background, while passing optically near of M71 globular star cluster in the constalletion of Sagitta, producung a nice perspective of both objetcs.
Comet C/2009 P1 Garradd these days show a 7.2 magnitude and is visible by using binoculars and small telescopes, being the brightest comet in the current sky. Garradd is a giant comet wich absolute magnitude reaches 2.5 (Elenin in comparision reaches 10), not approaching too much to Sun (1.5 AU) nor Earth (1.2 AU). Past august 22th the comet reached their first minimun distance to Earth, 1.3 AU, having a second approach next 4/march/2012. Having two minimun distance to Earth is normal on comet orbits.
The resulting composition of 215 shots during more than two hours following the comet, shows the trace it leaves while moving, making it easy to see it's trayectory and speed based on time the shots were taken. All times are Universal Time, so you have to calculate your local time.
[size=120][b]How fast it moves[/b][/size]
http://www.astronomica.es
Copyright: Jaime Fernandez
[url=http://www.astronomica.es/imagen.asp?id=1&seccion=1&id_prod=295]Click here[/url] for aditional information and label free image.
[img2]http://www.castillosdesoria.com/astropics/imagen/295_4.jpg[/img2]
This picture shows how fast comet C/2009 P1 Garradd moves relative to fixed star field background, while passing optically near of M71 globular star cluster in the constalletion of Sagitta, producung a nice perspective of both objetcs.
Comet C/2009 P1 Garradd these days show a 7.2 magnitude and is visible by using binoculars and small telescopes, being the brightest comet in the current sky. Garradd is a giant comet wich absolute magnitude reaches 2.5 (Elenin in comparision reaches 10), not approaching too much to Sun (1.5 AU) nor Earth (1.2 AU). Past august 22th the comet reached their first minimun distance to Earth, 1.3 AU, having a second approach next 4/march/2012. Having two minimun distance to Earth is normal on comet orbits.
The resulting composition of 215 shots during more than two hours following the comet, shows the trace it leaves while moving, making it easy to see it's trayectory and speed based on time the shots were taken. All times are Universal Time, so you have to calculate your local time.