Comet 21P/Giacobini-Zinner Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet 21P/Giacobini-Zinner 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 21P/Giacobini-Zinner Rise and Set Times
Today's Comet 21P/Giacobini-Zinner rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.
Comet 21P/Giacobini-Zinner Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 21P/Giacobini-Zinner with respect of the Sun and the orbits of the major planets. The position of Comet 21P/Giacobini-Zinner 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 21P/Giacobini-Zinner Ephemeris
The following table lists the ephemerides of Comet 21P/Giacobini-Zinner computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 21P/Giacobini-Zinner in our Online Planetarium at the chosen date.
|2018 Apr 16||16.17||19h 18m 52s||+12° 54’ 08”||Aquila|
|2018 Apr 17||16.12||19h 20m 23s||+13° 14’ 56”||Aquila|
|2018 Apr 18||16.07||19h 21m 53s||+13° 35’ 58”||Aquila|
|2018 Apr 19||16.02||19h 23m 25s||+13° 57’ 18”||Aquila|
|2018 Apr 20||15.97||19h 24m 56s||+14° 18’ 51”||Aquila|
|2018 Apr 21||15.92||19h 26m 26s||+14° 40’ 41”||Aquila|
|2018 Apr 22||15.87||19h 27m 56s||+15° 02’ 48”||Aquila|
|2018 Apr 23||15.82||19h 29m 26s||+15° 25’ 09”||Aquila|
|2018 Apr 24||15.77||19h 30m 57s||+15° 47’ 45”||Aquila|
|2018 Apr 25||15.71||19h 32m 27s||+16° 10’ 38”||Aquila|
|2018 Apr 26||15.66||19h 33m 59s||+16° 33’ 47”||Sagitta|
|2018 Apr 27||15.61||19h 35m 29s||+16° 57’ 11”||Sagitta|
|2018 Apr 28||15.56||19h 36m 59s||+17° 20’ 52”||Sagitta|
|2018 Apr 29||15.50||19h 38m 30s||+17° 44’ 48”||Sagitta|
Distance of Comet 21P/Giacobini-Zinner from Earth
The following chart shows the distance of Comet 21P/Giacobini-Zinner 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 21P/Giacobini-Zinner is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet 21P/Giacobini-Zinner
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 21P/Giacobini-Zinner, 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 21P/Giacobini-Zinner Orbital Elements
The following table lists the orbital elements of Comet 21P/Giacobini-Zinner at epoch 14 July 2008 00:00 UTC (JD: 2454662.5). Source: JPL Small-Body Database
|Perihelion distance||q||1.03524873 AU
|Date of perihelion transit||Tp||2005-Jul-02 22:58:55
|Next perihelion transit||2012-Feb-12 03:47
|Argument of perihelion||peri||172.5126988044°|
|Longitude of the ascending node||node||195.39380765818°|
|Closest approach to Earth*||2018-Sep-11|
|Distance of closest approach*||0.39085753 AU
* 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.