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Comet 110P/Hartley 3

Available Resources

Comet 110P/Hartley 3 Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 110P/Hartley 3 is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet 110P/Hartley 3 in Sagittarius on October, 17 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
18h 23m 11s
-23° 27’ 02”
-
24.24
-

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 behvior 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.

Comet 110P/Hartley 3 Rise and Set Times

Today's Comet 110P/Hartley 3 rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 113.5°
Max altitude: 15.1°
Azimuth: 246.6°

Comet 110P/Hartley 3 Orbit Diagram

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!

Orbit Diagram of Comet 110P/Hartley 3
View Comet 110P/Hartley 3 in the 3D Solar System Simulator

Comet 110P/Hartley 3 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
2018 Oct 10 18h 18m 56s -23° 36’ 33” 24.20 Sagittarius
2018 Oct 11 18h 19m 28s -23° 35’ 18” 24.20 Sagittarius
2018 Oct 12 18h 20m 00s -23° 34’ 04” 24.21 Sagittarius
2018 Oct 13 18h 20m 34s -23° 32’ 48” 24.22 Sagittarius
2018 Oct 14 18h 21m 07s -23° 31’ 33” 24.22 Sagittarius
2018 Oct 15 18h 21m 42s -23° 30’ 17” 24.23 Sagittarius
2018 Oct 16 18h 22m 17s -23° 29’ 00” 24.23 Sagittarius
2018 Oct 17 18h 22m 51s -23° 27’ 43” 24.24 Sagittarius
2018 Oct 18 18h 23m 29s -23° 26’ 26” 24.24 Sagittarius
2018 Oct 19 18h 24m 06s -23° 25’ 09” 24.25 Sagittarius
2018 Oct 20 18h 24m 42s -23° 23’ 49” 24.25 Sagittarius
2018 Oct 21 18h 25m 20s -23° 22’ 31” 24.26 Sagittarius
2018 Oct 22 18h 25m 59s -23° 21’ 11” 24.26 Sagittarius
2018 Oct 23 18h 26m 39s -23° 19’ 50” 24.27 Sagittarius

Distance of Comet 110P/Hartley 3 from Earth

The following chart shows the distance of Comet 110P/Hartley 3 from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 110P/Hartley 3 is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 110P/Hartley 3 from Earth between January 2013 and December 2075

Light Curve of Comet 110P/Hartley 3

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.

Predicted magnitude of Comet 110P/Hartley 3 between January 2013 and December 2075

Comet 110P/Hartley 3 Orbital Elements

The following table lists the orbital elements of Comet 110P/Hartley 3 at epoch 07 September 2011 00:00 UTC (JD: 2455812.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.31348058
Orbit inclination i 11.68733184°
Perihelion distance q 2.48099115 AU
371,150,995 km
Aphelion distance Q 4.74674656 AU
710,103,179 km
Semi-major axis a 3.61386885 AU
540,627,087 km
Orbital period period 6.8700 years
2,509.3256 days
Date of perihelion transit Tp 2014-Dec-18 00:28:07
2,457,009.5195 JD
Next perihelion transit 2021-Oct-31 08:16
2,459,518.8451 JD
Argument of perihelion peri 167.59582598398°
Longitude of the ascending node node 287.70603608175°
Mean anomaly M 188.26977894764°
Mean motion n 0.14346484°/day
Closest approach to Earth* 2014-Dec-31
Distance of closest approach* 1.49411902 AU
223,517,024 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.