Your guide to the Solar System
🌎 Location: Greenwich, United Kingdom [change]
Comets » 

Comet 117P/Helin-Roman-Alu 1

Available Resources

Comet 117P/Helin-Roman-Alu 1 Orbital Elements

The following table lists the orbital elements of Comet 117P/Helin-Roman-Alu 1 at epoch 30 June 2014 00:00 UTC (JD: 2456839.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.25388255
Orbit inclination i 8.69719020°
Perihelion distance q 3.05633124 AU
457,220,647 km
Aphelion distance Q 5.13629647 AU
768,379,017 km
Semi-major axis a 4.09631386 AU
612,799,832 km
Orbital period period 8.2900 years
3,028.2259 days
Date of perihelion transit Tp 2014-Mar-27 02:48:03
2,456,743.6167 JD
Next perihelion transit 2022-Jul-11 08:13
2,459,771.8426 JD
Argument of perihelion peri 222.67534523185°
Longitude of the ascending node node 58.895130958862°
Mean anomaly M 11.398748391825°
Mean motion n 0.11888149°/day

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!

Orbit Diagram of Comet 117P/Helin-Roman-Alu 1
View Comet 117P/Helin-Roman-Alu 1 in the 3D Solar System Simulator

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.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 May 20 08h 09m 01s +27° 50’ 21” 19.28 Cancer
2019 May 21 08h 09m 42s +27° 47’ 23” 19.28 Cancer
2019 May 22 08h 10m 24s +27° 44’ 26” 19.28 Cancer
2019 May 23 08h 11m 07s +27° 41’ 26” 19.29 Cancer
2019 May 24 08h 11m 49s +27° 38’ 26” 19.29 Cancer
2019 May 25 08h 12m 33s +27° 35’ 23” 19.29 Cancer
2019 May 26 08h 13m 15s +27° 32’ 21” 19.30 Cancer
2019 May 27 08h 13m 59s +27° 29’ 17” 19.30 Cancer
2019 May 28 08h 14m 44s +27° 26’ 11” 19.31 Cancer
2019 May 29 08h 15m 29s +27° 23’ 03” 19.31 Cancer
2019 May 30 08h 16m 14s +27° 19’ 55” 19.31 Cancer
2019 May 31 08h 17m 00s +27° 16’ 46” 19.32 Cancer
2019 Jun 01 08h 17m 47s +27° 13’ 36” 19.32 Cancer
2019 Jun 02 08h 18m 33s +27° 10’ 24” 19.32 Cancer