Comet Halley (1P/Halley)

Comet Halley (1P/Halley) is currently in the constellation of Hydra. The current Right Ascension of Comet Halley (1P/Halley) is 08h 22m 39s and the Declination is +02° 49’ 21” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet Halley (1P/Halley) is 25.63 (JPL).

Summary of key facts about Comet Halley (1P/Halley) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

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Additional information about Comet Halley (1P/Halley) available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Comet Halley (1P/Halley)?)
• Distance from Earth (see also How far is Comet Halley (1P/Halley) from Earth?)
• Rise and set times (see also When does Comet Halley (1P/Halley) rise and set?)
• Brightness (see also How bright is Comet Halley (1P/Halley)?)
• Orbital elements. Detailed information about Comet Halley (1P/Halley) orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Comet Halley (1P/Halley) with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet Halley (1P/Halley) for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Comet Halley (1P/Halley) in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet Halley (1P/Halley) with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet Halley (1P/Halley) is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet Halley (1P/Halley)?, a page that provides all the information needed to find Comet Halley (1P/Halley) in the sky and additional links to sky charts.

Comet Halley (1P/Halley) Distance from Earth

The distance of Comet Halley (1P/Halley) from Earth is currently 5,377,234,706 kilometers, equivalent to 35.944594 Astronomical Units. Light takes 4 hours, 58 minutes and 56.5243 seconds to travel from Comet Halley (1P/Halley) and arrive to us.

The following chart shows the distance of Comet Halley (1P/Halley) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of Halley's Comet from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet Halley (1P/Halley) to Earth

Between January 1900 and January 2100 the closest approach of Comet Halley (1P/Halley) to Earth happens on Sat May 21 1910 at a distance of 0.15254448 Astronomical Units, or 22,820,329 kilometers:

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet Halley (1P/Halley) brightness

The current visual magnitude of Comet Halley (1P/Halley) is 25.63.

The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet Halley (1P/Halley), according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Comet Halley (1P/Halley) rise and set times

Today's Comet Halley (1P/Halley) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

The rise and set times are defined as the time at which the upper limb of Comet Halley (1P/Halley) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Visualization of Comet Halley (1P/Halley) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet Halley (1P/Halley) with respect of the Sun and the orbits of the major planets. The position of Comet Halley (1P/Halley) and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Comet Halley (1P/Halley) 15 Days Ephemeris

The following table lists the ephemerides of Comet Halley (1P/Halley) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet Halley (1P/Halley) in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2020 Jul 28	08h 21m 56s	+02° 52’ 05”	25.63	Hydra
2020 Jul 29	08h 22m 02s	+02° 51’ 43”	25.63	Hydra
2020 Jul 30	08h 22m 09s	+02° 51’ 20”	25.63	Hydra
2020 Jul 31	08h 22m 14s	+02° 50’ 58”	25.63	Hydra
2020 Aug 01	08h 22m 21s	+02° 50’ 35”	25.63	Hydra
2020 Aug 02	08h 22m 27s	+02° 50’ 12”	25.63	Hydra
2020 Aug 03	08h 22m 32s	+02° 49’ 48”	25.63	Hydra
2020 Aug 04	08h 22m 38s	+02° 49’ 23”	25.63	Hydra
2020 Aug 05	08h 22m 45s	+02° 48’ 59”	25.63	Hydra
2020 Aug 06	08h 22m 50s	+02° 48’ 33”	25.63	Hydra
2020 Aug 07	08h 22m 57s	+02° 48’ 07”	25.63	Hydra
2020 Aug 08	08h 23m 03s	+02° 47’ 41”	25.63	Hydra
2020 Aug 09	08h 23m 08s	+02° 47’ 16”	25.63	Hydra
2020 Aug 10	08h 23m 14s	+02° 46’ 49”	25.63	Hydra