Comet 110P/Hartley 3

Comet 110P/Hartley 3 is currently in the constellation of Pisces. The current Right Ascension of Comet 110P/Hartley 3 is 00h 08m 10s and the Declination is +12° 28’ 51” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 110P/Hartley 3 is 18.64 (JPL).

Summary of key facts about Comet 110P/Hartley 3 [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 110P/Hartley 3 available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Comet 110P/Hartley 3?)
• Distance from Earth (see also How far is Comet 110P/Hartley 3 from Earth?)
• Rise and set times (see also When does Comet 110P/Hartley 3 rise and set?)
• Brightness (see also How bright is Comet 110P/Hartley 3?)
• Orbital elements. Detailed information about Comet 110P/Hartley 3 orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Comet 110P/Hartley 3 with respect to the major Solar System objects.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet 110P/Hartley 3 for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Comet 110P/Hartley 3 in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet 110P/Hartley 3 with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 110P/Hartley 3 is right now. Click on the image to see a more detailed fullscreen tracker view.

Also check out Where is Comet 110P/Hartley 3?, a page that provides all the information needed to find Comet 110P/Hartley 3 in the sky and additional links to sky charts.

Comet 110P/Hartley 3 Distance from Earth

The distance of Comet 110P/Hartley 3 from Earth is currently 476,628,923 kilometers, equivalent to 3.186068 Astronomical Units. Light takes 26 minutes and 29.8630 seconds to travel from Comet 110P/Hartley 3 and arrive to us.

The following chart shows the distance of Comet 110P/Hartley 3 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 110P/Hartley 3 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 110P/Hartley 3 to Earth

Between January 2013 and December 2100, the closest approach of Comet 110P/Hartley 3 to Earth happens on Wed Dec 31 2014 at a distance of 1.494125 Astronomical Units, or 223,517,926 kilometers:

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

Comet 110P/Hartley 3 brightness

The current visual magnitude of Comet 110P/Hartley 3 is 18.64.

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 110P/Hartley 3, 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 110P/Hartley 3 rise and set times

Today's Comet 110P/Hartley 3 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 110P/Hartley 3 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 110P/Hartley 3 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 110P/Hartley 3 with respect of the Sun and the orbits of the major planets. The position of Comet 110P/Hartley 3 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 110P/Hartley 3 15 Days Ephemeris

The following table lists the ephemerides of Comet 110P/Hartley 3 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 110P/Hartley 3 in our Online Planetarium at the chosen date.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2021 Jan 14	23h 59m 08s	+11° 56’ 02”	18.66	Pegasus
2021 Jan 15	00h 00m 15s	+11° 59’ 52”	18.65	Pegasus
2021 Jan 16	00h 01m 22s	+12° 03’ 47”	18.65	Pegasus
2021 Jan 17	00h 02m 30s	+12° 07’ 50”	18.65	Pegasus
2021 Jan 18	00h 03m 38s	+12° 11’ 57”	18.65	Pegasus
2021 Jan 19	00h 04m 48s	+12° 16’ 11”	18.65	Pegasus
2021 Jan 20	00h 05m 57s	+12° 20’ 31”	18.64	Pegasus
2021 Jan 21	00h 07m 08s	+12° 24’ 56”	18.64	Pisces
2021 Jan 22	00h 08m 18s	+12° 29’ 27”	18.64	Pisces
2021 Jan 23	00h 09m 30s	+12° 34’ 04”	18.64	Pisces
2021 Jan 24	00h 10m 42s	+12° 38’ 45”	18.64	Pisces
2021 Jan 25	00h 11m 56s	+12° 43’ 32”	18.63	Pisces
2021 Jan 26	00h 13m 09s	+12° 48’ 25”	18.63	Pisces
2021 Jan 27	00h 14m 23s	+12° 53’ 22”	18.63	Pisces