C/2021 D1 (SWAN) live position and data

This page shows Comet C/2021 D1 (SWAN) 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/2021 D1 (SWAN) (less than 1.5 degrees):

StarHIP 168436.733803h 36m 46s+34° 20’ 51”
StarHIP 173877.529203h 43m 24s+34° 06’ 58”
StarHIP 177356.562803h 47m 52s+33° 35’ 59”
StarHIP 173206.7303h 42m 27s+32° 56’ 22”
StarHIP 171028.92603h 39m 48s+33° 28’ 24”
StarHIP 171297.242803h 40m 07s+34° 06’ 59”
StarHIP 177698.244603h 48m 15s+34° 36’ 03”
StarHIP 172267.690403h 41m 23s+34° 58’ 50”
StarHIP 171778.539603h 40m 44s+33° 38’ 04”
StarHIP 173134.980803h 42m 22s+33° 57’ 54”
StarHIP 178157.079603h 48m 43s+34° 18’ 37”
StarHIP 169578.934803h 38m 08s+35° 10’ 52”

Additional resources

Additional Resources about Comet C/2021 D1 (SWAN)

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.

RA:  ()
Dec:  ()