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
Comet 21P/Giacobini-Zinner is circumpolar from Greenwich, United Kingdom [change] and transits at 05:10 UTC (altitude: 77.6°)
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 Aug 10||01h 31m 40s||+66° 23’ 57”||12.72||Cassiopeia|
|2018 Aug 11||01h 42m 57s||+66° 14’ 58”||12.67||Cassiopeia|
|2018 Aug 12||01h 54m 21s||+66° 02’ 25”||12.63||Cassiopeia|
|2018 Aug 13||02h 05m 45s||+65° 46’ 06”||12.58||Cassiopeia|
|2018 Aug 14||02h 17m 09s||+65° 25’ 58”||12.54||Cassiopeia|
|2018 Aug 15||02h 28m 28s||+65° 01’ 53”||12.50||Cassiopeia|
|2018 Aug 16||02h 39m 41s||+64° 33’ 47”||12.46||Cassiopeia|
|2018 Aug 17||02h 50m 43s||+64° 01’ 39”||12.41||Cassiopeia|
|2018 Aug 18||03h 01m 32s||+63° 25’ 26”||12.37||Cassiopeia|
|2018 Aug 19||03h 12m 07s||+62° 45’ 07”||12.33||Cassiopeia|
|2018 Aug 20||03h 22m 27s||+62° 00’ 45”||12.29||Camelopardalis|
|2018 Aug 21||03h 32m 27s||+61° 12’ 20”||12.25||Camelopardalis|
|2018 Aug 22||03h 42m 10s||+60° 19’ 55”||12.22||Camelopardalis|
|2018 Aug 23||03h 51m 32s||+59° 23’ 35”||12.18||Camelopardalis|
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 29 December 2017 00:00 UTC (JD: 2458117.5). Source: JPL Small-Body Database
|Perihelion distance||q||1.01315110 AU
|Date of perihelion transit||Tp||2018-Sep-10 06:27:47
|Argument of perihelion||peri||172.83191932167°|
|Longitude of the ascending node||node||195.40028173068°|
|Closest approach to Earth*||2058-Sep-18|
|Distance of closest approach*||0.37340131 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.