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Comet 26P/Grigg-Skjellerup

Available Resources

Comet 26P/Grigg-Skjellerup Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 26P/Grigg-Skjellerup 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 26P/Grigg-Skjellerup in Serpens on December, 11 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 00m 53s
-11° 01’ 55”

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 26P/Grigg-Skjellerup Rise and Set Times

Today's Comet 26P/Grigg-Skjellerup rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 101.1°
Max altitude: 27.5°
Azimuth: 259.0°

Comet 26P/Grigg-Skjellerup Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 26P/Grigg-Skjellerup with respect of the Sun and the orbits of the major planets. The position of Comet 26P/Grigg-Skjellerup 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 26P/Grigg-Skjellerup
View Comet 26P/Grigg-Skjellerup in the 3D Solar System Simulator

Comet 26P/Grigg-Skjellerup Ephemeris

The following table lists the ephemerides of Comet 26P/Grigg-Skjellerup computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 26P/Grigg-Skjellerup in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Dec 04 17h 33m 17s -11° 36’ 06” 18.71 Serpens
2018 Dec 05 17h 36m 51s -11° 32’ 25” 18.75 Serpens
2018 Dec 06 17h 40m 24s -11° 28’ 32” 18.78 Serpens
2018 Dec 07 17h 43m 55s -11° 24’ 28” 18.82 Ophiucus
2018 Dec 08 17h 47m 26s -11° 20’ 12” 18.86 Serpens
2018 Dec 09 17h 50m 54s -11° 15’ 47” 18.90 Serpens
2018 Dec 10 17h 54m 23s -11° 11’ 09” 18.94 Serpens
2018 Dec 11 17h 57m 48s -11° 06’ 23” 18.98 Serpens
2018 Dec 12 18h 01m 14s -11° 01’ 24” 19.02 Serpens
2018 Dec 13 18h 04m 37s -10° 56’ 16” 19.06 Serpens
2018 Dec 14 18h 07m 59s -10° 50’ 57” 19.10 Serpens
2018 Dec 15 18h 11m 21s -10° 45’ 29” 19.14 Serpens
2018 Dec 16 18h 14m 40s -10° 39’ 51” 19.18 Serpens
2018 Dec 17 18h 18m 00s -10° 34’ 04” 19.22 Serpens

Distance of Comet 26P/Grigg-Skjellerup from Earth

The following chart shows the distance of Comet 26P/Grigg-Skjellerup 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 26P/Grigg-Skjellerup is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 26P/Grigg-Skjellerup from Earth between January 2013 and December 2075

Light Curve of Comet 26P/Grigg-Skjellerup

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 26P/Grigg-Skjellerup, 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 26P/Grigg-Skjellerup between January 2013 and December 2075

Comet 26P/Grigg-Skjellerup Orbital Elements

The following table lists the orbital elements of Comet 26P/Grigg-Skjellerup at epoch 27 June 2007 00:00 UTC (JD: 2454279.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.63307172
Orbit inclination i 22.35695638°
Perihelion distance q 1.11673172 AU
167,060,688 km
Aphelion distance Q 4.97018923 AU
743,529,728 km
Semi-major axis a 3.04346048 AU
455,295,208 km
Orbital period period 5.3100 years
1,939.3220 days
Date of perihelion transit Tp 2008-Mar-23 16:08:41
2,454,549.1727 JD
Next perihelion transit 2013-Jul-14 23:52
2,456,488.4947 JD
Argument of perihelion peri 1.7005449644509°
Longitude of the ascending node node 211.71238175969°
Mean anomaly M 309.94014754112°
Mean motion n 0.18563188°/day
Closest approach to Earth* 2029-Mar-13
Distance of closest approach* 0.63217546 AU
94,572,103 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.