Comet 117P/Helin-Roman-Alu 1
Comet 117P/Helin-Roman-Alu 1 is currently in the constellation of Leo. The current Right Ascension of Comet 117P/Helin-Roman-Alu 1 is 11h 07m 45s and the Declination is +12° 56’ 10” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 117P/Helin-Roman-Alu 1 is 18.00 (JPL).
Summary of key facts about Comet 117P/Helin-Roman-Alu 1 [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]:
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Additional information about Comet 117P/Helin-Roman-Alu 1 available on TheSkyLive:
Comet 117P/Helin-Roman-Alu 1 Position and Finder Charts
Below we provide Comet 117P/Helin-Roman-Alu 1 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.
Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 117P/Helin-Roman-Alu 1 is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet 117P/Helin-Roman-Alu 1?, a page that provides all the information needed to find Comet 117P/Helin-Roman-Alu 1 in the sky and additional links to sky charts.
Comet 117P/Helin-Roman-Alu 1 Distance from Earth
The distance of Comet 117P/Helin-Roman-Alu 1 from Earth is currently 761,425,810 kilometers, equivalent to 5.089817 Astronomical Units. Light takes 42 minutes and 19.8431 seconds to travel from Comet 117P/Helin-Roman-Alu 1 and arrive to us.
The following chart shows the distance of Comet 117P/Helin-Roman-Alu 1 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.
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 117P/Helin-Roman-Alu 1 from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Comet 117P/Helin-Roman-Alu 1 to Earth
Between January 2013 and December 2100 the closest approach of Comet 117P/Helin-Roman-Alu 1 to Earth happens on Sun Jul 3 2022 at a distance of 2.03085116 Astronomical Units, or 303,811,010 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet 117P/Helin-Roman-Alu 1 brightness
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 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 rise and set times
The rise and set times are defined as the time at which the upper limb of Comet 117P/Helin-Roman-Alu 1 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 117P/Helin-Roman-Alu 1 Orbital Elements
|Perihelion distance||q||3.05607580 AU
|Date of perihelion transit||Tp||2014-Mar-26 22:59:30
|Next perihelion transit||2022-Jul-10 19:48
|Argument of perihelion||peri||222.64777521881°|
|Longitude of the ascending node||node||58.888013293504°|
Visualization of Comet 117P/Helin-Roman-Alu 1 Orbit
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 15 Days 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.
|2020 Jul 31||11h 01m 05s||+13° 44’ 24”||18.00||Leo|
|2020 Aug 01||11h 02m 00s||+13° 37’ 45”||18.00||Leo|
|2020 Aug 02||11h 02m 56s||+13° 31’ 04”||18.00||Leo|
|2020 Aug 03||11h 03m 51s||+13° 24’ 21”||18.00||Leo|
|2020 Aug 04||11h 04m 46s||+13° 17’ 39”||18.00||Leo|
|2020 Aug 05||11h 05m 43s||+13° 10’ 54”||18.00||Leo|
|2020 Aug 06||11h 06m 38s||+13° 04’ 09”||18.00||Leo|
|2020 Aug 07||11h 07m 36s||+12° 57’ 23”||18.00||Leo|
|2020 Aug 08||11h 08m 31s||+12° 50’ 35”||18.00||Leo|
|2020 Aug 09||11h 09m 29s||+12° 43’ 46”||18.00||Leo|
|2020 Aug 10||11h 10m 26s||+12° 36’ 57”||18.00||Leo|
|2020 Aug 11||11h 11m 22s||+12° 30’ 07”||18.00||Leo|
|2020 Aug 12||11h 12m 20s||+12° 23’ 17”||18.00||Leo|
|2020 Aug 13||11h 13m 18s||+12° 16’ 24”||18.00||Leo|