Comet 117P/Helin-Roman-Alu 1
Comet 117P/Helin-Roman-Alu 1 Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet 117P/Helin-Roman-Alu 1 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 117P/Helin-Roman-Alu 1 Rise and Set Times
Today's Comet 117P/Helin-Roman-Alu 1 rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.
Comet 117P/Helin-Roman-Alu 1 Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 117P/Helin-Roman-Alu 1 with respect of the Sun and the orbits of the major planets. The position of Comet 117P/Helin-Roman-Alu 1 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 117P/Helin-Roman-Alu 1 Ephemeris
The following table lists the ephemerides of Comet 117P/Helin-Roman-Alu 1 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 117P/Helin-Roman-Alu 1 in our Online Planetarium at the chosen date.
|2018 Jan 16||19.25||05h 45m 42s||+29° 12’ 29”||Auriga|
|2018 Jan 17||19.25||05h 45m 10s||+29° 12’ 20”||Auriga|
|2018 Jan 18||19.26||05h 44m 38s||+29° 12’ 09”||Auriga|
|2018 Jan 19||19.26||05h 44m 07s||+29° 11’ 56”||Auriga|
|2018 Jan 20||19.27||05h 43m 36s||+29° 11’ 42”||Auriga|
|2018 Jan 21||19.27||05h 43m 05s||+29° 11’ 26”||Auriga|
|2018 Jan 22||19.28||05h 42m 38s||+29° 11’ 11”||Auriga|
|2018 Jan 23||19.28||05h 42m 08s||+29° 10’ 53”||Auriga|
|2018 Jan 24||19.29||05h 41m 42s||+29° 10’ 33”||Auriga|
|2018 Jan 25||19.29||05h 41m 14s||+29° 10’ 13”||Auriga|
|2018 Jan 26||19.30||05h 40m 50s||+29° 09’ 51”||Auriga|
|2018 Jan 27||19.30||05h 40m 24s||+29° 09’ 29”||Auriga|
|2018 Jan 28||19.31||05h 40m 00s||+29° 09’ 06”||Auriga|
|2018 Jan 29||19.32||05h 39m 38s||+29° 08’ 43”||Auriga|
Distance of Comet 117P/Helin-Roman-Alu 1 from Earth
The following chart shows the distance of Comet 117P/Helin-Roman-Alu 1 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 117P/Helin-Roman-Alu 1 is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet 117P/Helin-Roman-Alu 1
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 117P/Helin-Roman-Alu 1, 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 117P/Helin-Roman-Alu 1 Orbital Elements
The following table lists the orbital elements of Comet 117P/Helin-Roman-Alu 1 at epoch 02 December 2009 00:00 UTC (JD: 2455168.5). Source: JPL Small-Body Database
|Perihelion distance||q||3.04426994 AU
|Date of perihelion transit||Tp||2005-Dec-20 20:27:39
|Next perihelion transit||2014-Mar-26 20:42
|Argument of perihelion||peri||223.0226727343°|
|Longitude of the ascending node||node||58.930116675442°|
|Closest approach to Earth*||2022-Jul-03|
|Distance of closest approach*||2.03085668 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.