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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 43426008h 50m 44s+35° 04’ 14”
StarHIP 434106.163808h 50m 32s+33° 17’ 06”
StarHIP 435038.843808h 51m 38s+34° 11’ 21”
StarHIP 437198.189208h 54m 13s+35° 03’ 33”
StarHIP 439497.06408h 57m 04s+35° 01’ 24”
StarHIP 441697.655808h 59m 46s+34° 49’ 30”
StarHIP 434718.723808h 51m 18s+34° 09’ 16”
StarHIP 436747.97408h 53m 50s+33° 03’ 24”
StarHIP 441178.471408h 59m 06s+33° 39’ 04”
StarHIP 439047.26108h 56m 39s+33° 15’ 28”
StarHIP 433688.306408h 50m 01s+35° 22’ 47”
StarHIP 436856.139208h 53m 55s+35° 32’ 18”
StarHIP 440378.089408h 58m 03s+33° 54’ 35”
StarHIP 432207.965608h 48m 16s+34° 35’ 56”
StarHIP 433537.284608h 49m 52s+33° 43’ 12”
StarHIP 436958.145408h 53m 59s+34° 52’ 09”
GalaxyNGC 268310.508h 52m 40s+33° 25’ 01”
GalaxyUGC 462113.808h 50m 11s+35° 04’ 33”

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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