Comets

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COMETS

Comet C/2011 L4 (Pan-STARRS) - Overhead View

View of comet, Earth and Sun from north of the ecliptic plane during 2012 FEB 28 to 2013 MAY 09 - Closest to Earth 2013 MAR 05 at 1.0969 AU

© Curt Renz

Comet C/2011 L4 (Pan-STARRS) - Equatorial Chart

Plot of the comet’s path in equatorial coordinates of current date - Greatest Brilliance 2013 MAR 09 at Magnitude -0.3

Comet C/2011 L4 (Pan-STARRS) - Ephemeris

Geocentric ephemeris of the comet in decimal equatorial coordinates for both the current date and J2000.0 at 00:00 UT

Comet C/2011 L4 (Pan-STARRS) - Stellar Magnitude

Graph of the brightness of the comet measured in stellar magnitude based on NASA/JPL elements

Comet C/2011 L4 (Pan-STARRS) - Earth Distance

Graph of the distance to the comet from Earth measured in astronomical units

Comet C/2011 L4 (Pan-STARRS) - Declination

Graph of the current date geocentric celestial declination of the comet

Comet C/2011 L4 (Pan-STARRS) - Morning Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes before sunrise during 2013 MAR 20 to MAY 26

Comet C/2012 S1 (ISON) - Overhead View

View of comet, Earth and Sun from north of the ecliptic plane during 2013 SEP 19 to 2014 FEB 06 - Closest to Earth 2013 DEC 27 at 0.4284 AU

Comet C/2012 S1 (ISON) - Ephemeris

Geocentric ephemeris of the comet in decimal equatorial coordinates for both the current date and J2000.0 at 00:00 UT

Comet C/2012 S1 (ISON) - Stellar Magnitude

Graph of the brightness of the comet measured in stellar magnitude based on NASA/JPL elements

Comet C/2012 S1 (ISON) - Earth Distance

Graph of the distance to the comet from Earth measured in astronomical units

Comet C/2012 S1 (ISON) - Declination

Graph of the current date geocentric celestial declination of the comet

Comet C/2012 S1 (ISON) - Equatorial Chart

Plot of the comet’s path in equatorial coordinates of current date Greatest Brilliance 2013 NOV 28 at Magnitude -5.1

Comet C/2012 S1 (ISON) - Morning Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes before sunrise during 2013 OCT 03 to 2014 JAN 31

Comet C/2012 S1 (ISON) - Evening Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes after sunset during 2013 DEC 05 to 2014 JAN 31

Comet C/2011 L4 (Pan-STARRS) - Evening Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes after sunset during 2013 MAR 07 to MAY 15

Comet C/2012 F6 (Lemmon) - Ephemeris

Geocentric ephemeris of the comet in decimal equatorial coordinates for both the current date and J2000.0 at 00:00 UT

Comet C/2012 F6 (Lemmon) - Equatorial Chart

Plot of the comet’s path in equatorial coordinates of current date Greatest Brilliance 2013 MAR 21 at Magnitude +3.0

Comet C/2012 F6 (Lemmon) - Stellar Magnitude

Graph of the brightness of the comet measured in stellar magnitude based on NASA/JPL elements

Comet C/2012 F6 (Lemmon) - Earth Distance

Graph of the distance to the comet from Earth measured in astronomical units

Comet C/2012 F6 (Lemmon) - Declination

Graph of the current date geocentric celestial declination of the comet

Comet C/2012 F6 (Lemmon) - Overhead View

View of comet, Earth and Sun from north of the ecliptic plane during 2013 FEB 19 to JUN 09 - Closest to Earth 2013 FEB 05 at 0.9853 AU

Comets of 2013

Comet C/2012 F6 (Lemmon) - Morning Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes before sunrise during 2013 APR 16 to JUL 22

Comet C/2012 F6 (Lemmon) - Evening Horizontal Chart

Plot of the comet’s path in horizontal (alt-az) coordinates as seen from Chicago 30 minutes after sunset during 2013 JUN 16 to SEP 25

Comet C/2013 A1 (Siding Spring) - Overhead View

View of comet, Mars, Earth and Sun from north of the ecliptic plane during 2014 JUN 01 to DEC 18 - Closest to Mars 2014 OCT 19 - Possible collision with Mars???

Comet C/2013 A1 (Siding Spring) - Equatorial Chart

Plot of Mars and the comet’s paths in equatorial coordinates of current date during the weeks surrounding their closest approach to each other as viewed from Earth