C/2017 O1 (ASASSN1) live position and data

This page shows Comet C/2017 O1 (ASASSN1) 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 O1 (ASASSN1) (less than 1.5 degrees):

Type	Name	Magnitude	Ar	Dec
Star	HIP 57901	0	11h 52m 32s	+27° 30’ 54”
Star	HIP 57591	7.1944	11h 48m 25s	+28° 25’ 01”
Star	HIP 57604	7.032	11h 48m 36s	+28° 47’ 59”
Star	HIP 58306	7.352	11h 57m 25s	+26° 45’ 45”
Star	HIP 57563	7.3846	11h 47m 56s	+27° 20’ 26”
Star	HIP 58213	6.7662	11h 56m 20s	+26° 40’ 46”
Star	HIP 57922	8.2162	11h 52m 46s	+28° 11’ 29”
Star	HIP 57517	8.42	11h 47m 20s	+27° 23’ 50”
Star	HIP 57761	7.8754	11h 50m 43s	+28° 05’ 48”
Star	HIP 57643	7.2774	11h 49m 12s	+28° 07’ 17”
Star	HIP 58284	8.7294	11h 57m 12s	+27° 09’ 34”
Galaxy	NGC 4004	14.0	11h 58m 05s	+27° 52’ 37”
Galaxy	NGC 3900	12.3	11h 49m 08s	+27° 01’ 24”
Galaxy	NGC 4008	12.9	11h 58m 17s	+28° 11’ 34”
Galaxy	NGC 3912	13.4	11h 50m 04s	+26° 28’ 46”
Galaxy	NGC 4017	13.4	11h 58m 45s	+27° 27’ 15”

Additional resources

Additional Resources about Comet C/2017 O1 (ASASSN1)

• 15 Days Ephemerides
• Interactive Sky Map (Planetarium)
• Rise & Set Times
• Distance from Earth
• Light Curve
• Orbital Elements

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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