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🌎 Location: Greenwich, United Kingdom [change]

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 27m 45s and the Declination is +02° 06’ 14” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet Halley (1P/Halley) is 25.58 (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]:

08h 27m 45s
+02° 06’ 14”
Hydra
25.58

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

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

Available Resources

Comet Halley (1P/Halley) Position and Finder Charts

Below we provide Comet Halley (1P/Halley) finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet Halley (1P/Halley) in Hydra on October, 22 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Comet Halley (1P/Halley) in Hydra on October, 22 2020
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

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.

Halley's Comet
RA: 08h 27m 45s
Dec: +02° 06’ 14”
Deep sky finder chart for Comet Halley (1P/Halley)
Field of view: 60x40 arcmins
View fullscreen

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 5,255,919,770 kilometers, equivalent to 35.133654 Astronomical Units. Light takes 4 hours, 52 minutes and 11.8612 seconds to travel from Comet Halley (1P/Halley) and arrive to us.

5,255,919,770
35.133654
4 hours, 52 minutes and 11.8612 seconds

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.

Distance of Comet Halley (1P/Halley) from Earth between January 1900 and January 2100

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 0.152544 Astronomical Units, or 22,820,329 kilometers:

Sat May 21 1910
22,820,329
0.152544

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 25.58.

25.58
-
-

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.

Predicted magnitude of Comet Halley (1P/Halley) between January 1900 and January 2100

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

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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):

Azimuth: 87.9°
Max altitude: 40.6°
Azimuth: 272.1°

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.

Comet Halley (1P/Halley) Orbital Elements

The following table lists the orbital elements of Comet Halley (1P/Halley) at epoch 16 February 1994 00:00 UTC (JD: 2449400.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.96714291
Orbit inclination i 162.26269058°
Perihelion distance q 0.58597811 AU
87,661,078 km
Aphelion distance Q 35.08231047 AU
5,248,238,957 km
Semi-major axis a 17.83414429 AU
2,667,950,017 km
Orbital period period 75.3200 years
27,509.1291 days
Date of perihelion transit Tp 1986-Feb-05 21:29:15
2,446,467.3953 JD
Next perihelion transit 2061-Jun-01 00:35
2,473,976.5244 JD
Argument of perihelion peri 111.33248510452°
Longitude of the ascending node node 58.420080976568°
Mean anomaly M 38.384264476439°
Mean motion n 0.01308656°/day

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!

Orbit Diagram of Comet Halley (1P/Halley)
View Comet Halley (1P/Halley) in the 3D Solar System Simulator

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 Oct 15 08h 27m 38s +02° 10’ 19” 25.59 Hydra
2020 Oct 16 08h 27m 39s +02° 09’ 47” 25.59 Hydra
2020 Oct 17 08h 27m 41s +02° 09’ 15” 25.59 Hydra
2020 Oct 18 08h 27m 42s +02° 08’ 44” 25.59 Hydra
2020 Oct 19 08h 27m 42s +02° 08’ 12” 25.58 Hydra
2020 Oct 20 08h 27m 43s +02° 07’ 41” 25.58 Hydra
2020 Oct 21 08h 27m 43s +02° 07’ 09” 25.58 Hydra
2020 Oct 22 08h 27m 45s +02° 06’ 39” 25.58 Hydra
2020 Oct 23 08h 27m 45s +02° 06’ 10” 25.58 Hydra
2020 Oct 24 08h 27m 45s +02° 05’ 39” 25.58 Hydra
2020 Oct 25 08h 27m 45s +02° 05’ 09” 25.58 Hydra
2020 Oct 26 08h 27m 45s +02° 04’ 41” 25.58 Hydra
2020 Oct 27 08h 27m 45s +02° 04’ 11” 25.58 Hydra
2020 Oct 28 08h 27m 45s +02° 03’ 42” 25.58 Hydra