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Comet C/2017 T1 (Heinze)

Comet C/2017 T1 (Heinze) is currently in the constellation of Octans. The current Right Ascension of Comet C/2017 T1 (Heinze) is 19h 56m 38s and the Declination is -88° 36’ 15” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2017 T1 (Heinze) is 31.70 (JPL).

Summary of key facts about Comet C/2017 T1 (Heinze) [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]:

19h 56m 38s
-88° 36’ 15”

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Additional information about Comet C/2017 T1 (Heinze) available on TheSkyLive:

Available Resources

Comet C/2017 T1 (Heinze) Position and Finder Charts

Below we provide Comet C/2017 T1 (Heinze) 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 C/2017 T1 (Heinze) in Octans on January, 23 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2017 T1 (Heinze) in Octans on January, 23 2021
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 C/2017 T1 (Heinze) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2017 T1 (Heinze)
RA: 19h 56m 38s
Dec: -88° 36’ 15”
Deep sky finder chart for Comet C/2017 T1 (Heinze)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2017 T1 (Heinze)?, a page that provides all the information needed to find Comet C/2017 T1 (Heinze) in the sky and additional links to sky charts.

Comet C/2017 T1 (Heinze) Distance from Earth

The distance of Comet C/2017 T1 (Heinze) from Earth is currently 1,681,857,338 kilometers, equivalent to 11.242522 Astronomical Units. Light takes 1 hours, 33 minutes and 30.0722 seconds to travel from Comet C/2017 T1 (Heinze) and arrive to us.

1 hours, 33 minutes and 30.0722 seconds

The following chart shows the distance of Comet C/2017 T1 (Heinze) 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 C/2017 T1 (Heinze) from Earth between January 2013 and December 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 C/2017 T1 (Heinze) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2017 T1 (Heinze) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2017 T1 (Heinze) to Earth happens on Fri Jan 5 2018 at a distance of 0.222797 Astronomical Units, or 33,330,018 kilometers:

Fri Jan 5 2018

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

Comet C/2017 T1 (Heinze) brightness

The current visual magnitude of Comet C/2017 T1 (Heinze) is 31.70.


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 C/2017 T1 (Heinze), 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 C/2017 T1 (Heinze) between January 2013 and December 2100

Comet C/2017 T1 (Heinze) rise and set times

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

Comet C/2017 T1 (Heinze) is currently not visible from Greenwich, United Kingdom [change]

The rise and set times are defined as the time at which the upper limb of Comet C/2017 T1 (Heinze) 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 C/2017 T1 (Heinze) Orbital Elements

The following table lists the orbital elements of Comet C/2017 T1 (Heinze) at epoch 13 December 2017 00:00 UTC (JD: 2458101.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00034579
Orbit inclination i 96.83375648°
Perihelion distance q 0.58065473 AU
86,864,711 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2018-Feb-21 16:59:46
2,458,171.2082 JD
Argument of perihelion peri 96.916279095918°
Longitude of the ascending node node 102.31594508572°
Mean anomaly M -0.00099844339404638°
Mean motion n 0.00001432°/day

Visualization of Comet C/2017 T1 (Heinze) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 T1 (Heinze) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 T1 (Heinze) 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 C/2017 T1 (Heinze)
View Comet C/2017 T1 (Heinze) in the 3D Solar System Simulator

Comet C/2017 T1 (Heinze) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2017 T1 (Heinze) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2017 T1 (Heinze) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 16 18h 17m 15s -88° 23’ 39” 31.66 Octans
2021 Jan 17 18h 28m 58s -88° 25’ 59” 31.67 Octans
2021 Jan 18 18h 41m 08s -88° 28’ 08” 31.67 Octans
2021 Jan 19 18h 53m 48s -88° 30’ 05” 31.68 Octans
2021 Jan 20 19h 06m 56s -88° 31’ 50” 31.68 Octans
2021 Jan 21 19h 20m 29s -88° 33’ 23” 31.69 Octans
2021 Jan 22 19h 34m 24s -88° 34’ 41” 31.69 Octans
2021 Jan 23 19h 48m 42s -88° 35’ 45” 31.69 Octans
2021 Jan 24 20h 03m 15s -88° 36’ 35” 31.70 Octans
2021 Jan 25 20h 18m 02s -88° 37’ 09” 31.70 Octans
2021 Jan 26 20h 32m 57s -88° 37’ 28” 31.71 Octans
2021 Jan 27 20h 47m 56s -88° 37’ 32” 31.71 Octans
2021 Jan 28 21h 02m 53s -88° 37’ 18” 31.72 Octans
2021 Jan 29 21h 17m 43s -88° 36’ 50” 31.72 Octans