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 58658	8.4536	12h 01m 43s	+29° 32’ 54”
Star	HIP 58985	8.923	12h 05m 38s	+28° 17’ 41”
Star	HIP 58323	7.9934	11h 57m 34s	+28° 33’ 18”
Star	HIP 58795	7.2514	12h 03m 33s	+29° 40’ 45”
Star	HIP 58606	8.6598	12h 01m 05s	+27° 57’ 43”
Star	HIP 58206	7.1786	11h 56m 15s	+28° 51’ 30”
Star	HIP 58462	8.766	11h 59m 20s	+27° 06’ 55”
Star	HIP 58971	8.0538	12h 05m 30s	+28° 30’ 20”
Star	HIP 58838	8.5598	12h 04m 05s	+28° 03’ 38”
Star	HIP 58577	8.3012	12h 00m 47s	+29° 11’ 14”
Star	HIP 58284	8.7294	11h 57m 12s	+27° 09’ 34”
Star	HIP 58777	8.1486	12h 03m 18s	+29° 07’ 14”
Galaxy	NGC 4004	14.0	11h 58m 05s	+27° 52’ 37”
Galaxy	NGC 4104	13.1	12h 06m 38s	+28° 10’ 31”
Galaxy	NGC 4008	12.9	11h 58m 17s	+28° 11’ 34”
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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