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C/2017 S6 (Lemmon) live position and data

This page shows Comet C/2017 S7 (Lemmon) location and other relevant astronomical data in real time. The celestial coordinates, magnitude, distances and speed are updated in real time and are computed using high quality data sets provided by the JPL Horizons ephemeris service (see acknowledgements for details). The sky map shown below represents a rectangular portion of the sky 60x40 arcminutes wide. By comparison the diameter of the full Moon is about 30 arcmins, so the full horizontal extent of the map is approximately 2 full Moons wide. Depending on the device you are using, the map can be dragged horizondally or vertically using the mouse or touchscreen. The deep sky image in the background is provided by the Digitized Sky Survey (acknowledgements).

Current close conjunctions

List of bright objects (stars brighter than magnitude 9.0 and galaxies brighter than magmitude 14.0) close to Comet C/2017 S7 (Lemmon) (less than 1.5 degrees):

TypeNameMagnitudeArDec
StarHIP 193108.217404h 08m 21s-21° 07’ 43”
StarHIP 189058.651204h 03m 08s-20° 30’ 14”
StarHIP 191918.054404h 06m 45s-21° 40’ 18”
StarHIP 187458.57604h 00m 53s-20° 20’ 05”
StarHIP 187468.027604h 00m 54s-20° 42’ 44”
StarHIP 189426.863604h 03m 36s-20° 09’ 31”
StarHIP 186417.11903h 59m 25s-20° 19’ 58”
StarHIP 188137.785604h 01m 52s-20° 28’ 30”
StarHIP 188167.131804h 01m 55s-21° 01’ 14”
StarHIP 188827.821804h 02m 53s-20° 30’ 22”
StarHIP 189266.46604h 03m 24s-20° 08’ 37”
StarHIP 191116.249204h 05m 46s-20° 30’ 45”
StarHIP 187667.38604h 01m 12s-22° 16’ 33”
StarHIP 188537.853804h 02m 30s-19° 29’ 53”
StarHIP 185278.732803h 57m 43s-20° 16’ 04”
StarHIP 190017.712804h 04m 17s-19° 28’ 09”
StarHIP 189177.535604h 03m 15s-21° 25’ 02”
StarHIP 190375.991604h 04m 40s-20° 22’ 54”
StarHIP 190667.691204h 05m 10s-21° 27’ 10”
GalaxyNGC 152112.604h 08m 19s-21° 03’ 06”
GalaxyNGC 151812.304h 06m 49s-21° 10’ 42”

Additional resources

Additional Resources about Comet C/2017 S7 (Lemmon)

Astronomy databases

This online sky chart is created using the following astronomy databases and services:

  1. The Digitized Sky Survey, a photographic survey of the whole sky created using images from different telescopes, including the Oschin Schmidt Telescope on Palomar Mountain
  2. The Hipparcos Star Catalogue, containing more than 100.000 bright stars
  3. The PGC 2003 Catalogue, containing information about 1 million galaxies
  4. The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies
Please see the acknowledgements section.

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