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C/2018 R3 (Lemmon) live position and data

This page shows Comet C/2018 R3 (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/2018 R3 (Lemmon) (less than 1.5 degrees):

TypeNameMagnitudeArDec
StarHIP 54691011h 11m 47s-15° 07’ 38”
StarHIP 541648.870411h 04m 47s-16° 52’ 29”
StarHIP 542906.997811h 06m 26s-16° 31’ 51”
StarHIP 539287.760811h 02m 05s-15° 41’ 32”
StarHIP 539888.616811h 02m 39s-14° 51’ 49”
StarHIP 543667.75211h 07m 21s-15° 21’ 38”
StarHIP 541608.443211h 04m 45s-16° 14’ 55”
StarHIP 544628.306411h 08m 34s-15° 33’ 40”
StarHIP 544347.925411h 08m 17s-15° 57’ 41”
StarHIP 543048.28111h 06m 34s-14° 44’ 38”
StarHIP 546128.578411h 10m 34s-16° 27’ 11”
StarHIP 546778.943411h 11m 32s-14° 59’ 23”
StarHIP 538496.229811h 00m 57s-15° 47’ 33”
GalaxyNGC 350814.011h 02m 59s-16° 17’ 21”
GalaxyPGC 3337413.411h 03m 11s-15° 20’ 09”

Additional resources

Additional Resources about Comet C/2018 R3 (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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