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Comet 168P/Hergenrother

Comet 168P/Hergenrother is currently in the constellation of Leo. The current Right Ascension of Comet 168P/Hergenrother is 11h 00m 55s and the Declination is +16° 12’ 49” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 168P/Hergenrother is 36.15 (JPL).

Summary of key facts about Comet 168P/Hergenrother [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]:

11h 00m 55s
+16° 12’ 49”

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Additional information about Comet 168P/Hergenrother available on TheSkyLive:

Available Resources

Comet 168P/Hergenrother Position and Finder Charts

Below we provide Comet 168P/Hergenrother 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 168P/Hergenrother in Leo on October, 27 2020
Field of view: 50x30 degrees
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Map showing Comet 168P/Hergenrother in Leo on October, 27 2020
Field of view: 10x6 degrees
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 = 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 168P/Hergenrother is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 11h 00m 55s
Dec: +16° 12’ 49”
Deep sky finder chart for Comet 168P/Hergenrother
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 168P/Hergenrother?, a page that provides all the information needed to find Comet 168P/Hergenrother in the sky and additional links to sky charts.

Comet 168P/Hergenrother Distance from Earth

The distance of Comet 168P/Hergenrother from Earth is currently 668,642,258 kilometers, equivalent to 4.469597 Astronomical Units. Light takes 37 minutes and 10.3505 seconds to travel from Comet 168P/Hergenrother and arrive to us.

37 minutes and 10.3505 seconds

The following chart shows the distance of Comet 168P/Hergenrother 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 168P/Hergenrother 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 168P/Hergenrother from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 168P/Hergenrother to Earth

Between January 2013 and December 2100, the closest approach of Comet 168P/Hergenrother to Earth happens on Wed Sep 24 2087 at a distance of 0.295791 Astronomical Units, or 44,249,684 kilometers:

Wed Sep 24 2087

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

Comet 168P/Hergenrother brightness

The current visual magnitude of Comet 168P/Hergenrother is 36.15.


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 168P/Hergenrother, 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 168P/Hergenrother between January 2013 and December 2100

Comet 168P/Hergenrother 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 168P/Hergenrother rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.7°
Max altitude: 54.8°
Azimuth: 286.2°

The rise and set times are defined as the time at which the upper limb of Comet 168P/Hergenrother 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 168P/Hergenrother Orbital Elements

The following table lists the orbital elements of Comet 168P/Hergenrother at epoch 03 October 2011 00:00 UTC (JD: 2455838.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.60947457
Orbit inclination i 21.92937147°
Perihelion distance q 1.41528112 AU
211,723,043 km
Aphelion distance Q 5.83280575 AU
872,575,323 km
Semi-major axis a 3.62404344 AU
542,149,183 km
Orbital period period 6.9000 years
2,519.9302 days
Date of perihelion transit Tp 2012-Oct-01 22:23:52
2,456,202.4332 JD
Next perihelion transit 2019-Aug-26 20:43
2,458,722.3635 JD
Argument of perihelion peri 13.918981309302°
Longitude of the ascending node node 356.47770707748°
Mean anomaly M 308.00809654522°
Mean motion n 0.14286110°/day

Visualization of Comet 168P/Hergenrother Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 168P/Hergenrother with respect of the Sun and the orbits of the major planets. The position of Comet 168P/Hergenrother 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 168P/Hergenrother
View Comet 168P/Hergenrother in the 3D Solar System Simulator

Comet 168P/Hergenrother 15 Days Ephemeris

The following table lists the ephemerides of Comet 168P/Hergenrother computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 168P/Hergenrother in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Oct 20 10h 55m 05s +16° 48’ 11” 36.00 Leo
2020 Oct 21 10h 55m 53s +16° 43’ 23” 36.02 Leo
2020 Oct 22 10h 56m 39s +16° 38’ 38” 36.04 Leo
2020 Oct 23 10h 57m 25s +16° 33’ 56” 36.06 Leo
2020 Oct 24 10h 58m 12s +16° 29’ 18” 36.08 Leo
2020 Oct 25 10h 58m 56s +16° 24’ 45” 36.10 Leo
2020 Oct 26 10h 59m 41s +16° 20’ 16” 36.12 Leo
2020 Oct 27 11h 00m 25s +16° 15’ 50” 36.14 Leo
2020 Oct 28 11h 01m 09s +16° 11’ 27” 36.16 Leo
2020 Oct 29 11h 01m 51s +16° 07’ 09” 36.18 Leo
2020 Oct 30 11h 02m 35s +16° 02’ 54” 36.20 Leo
2020 Oct 31 11h 03m 16s +15° 58’ 45” 36.21 Leo
2020 Nov 01 11h 03m 57s +15° 54’ 39” 36.23 Leo
2020 Nov 02 11h 04m 39s +15° 50’ 38” 36.25 Leo