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Comet C/2017 S6 (Catalina)

Available Resources

Comet C/2017 S6 (Catalina) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2017 S6 (Catalina) 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 C/2017 S6 (Catalina) in Scorpius on August, 17 2018
High Precision Live Sky Chart
16h 49m 48s
-42° 26’ 07”
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Comet C/2017 S6 (Catalina) Rise and Set Times

Comet C/2017 S6 (Catalina) is currently not visible from Greenwich, United Kingdom [change]

Comet C/2017 S6 (Catalina) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 S6 (Catalina) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 S6 (Catalina) 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 C/2017 S6 (Catalina)
View Comet C/2017 S6 (Catalina) in the 3D Solar System Simulator

Comet C/2017 S6 (Catalina) Ephemeris

The following table lists the ephemerides of Comet C/2017 S6 (Catalina) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2017 S6 (Catalina) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Aug 10 17h 05m 09s -43° 18’ 17” 19.58 Scorpius
2018 Aug 11 17h 02m 43s -43° 11’ 03” 19.63 Scorpius
2018 Aug 12 17h 00m 21s -43° 03’ 47” 19.68 Scorpius
2018 Aug 13 16h 58m 08s -42° 56’ 30” 19.73 Scorpius
2018 Aug 14 16h 55m 59s -42° 49’ 13” 19.79 Scorpius
2018 Aug 15 16h 53m 57s -42° 41’ 57” 19.84 Scorpius
2018 Aug 16 16h 52m 00s -42° 34’ 45” 19.89 Scorpius
2018 Aug 17 16h 50m 09s -42° 27’ 34” 19.94 Scorpius
2018 Aug 18 16h 48m 24s -42° 20’ 30” 19.98 Scorpius
2018 Aug 19 16h 46m 45s -42° 13’ 31” 20.03 Scorpius
2018 Aug 20 16h 45m 10s -42° 06’ 35” 20.08 Scorpius
2018 Aug 21 16h 43m 38s -41° 59’ 48” 20.13 Scorpius
2018 Aug 22 16h 42m 12s -41° 53’ 07” 20.18 Scorpius
2018 Aug 23 16h 40m 51s -41° 46’ 32” 20.23 Scorpius

Distance of Comet C/2017 S6 (Catalina) from Earth

The following chart shows the distance of Comet C/2017 S6 (Catalina) 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 C/2017 S6 (Catalina) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2017 S6 (Catalina) from Earth between January 2013 and December 2075

Light Curve of Comet C/2017 S6 (Catalina)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2017 S6 (Catalina), 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.

Predicted magnitude of Comet C/2017 S6 (Catalina) between January 2013 and December 2075

Comet C/2017 S6 (Catalina) Orbital Elements

The following table lists the orbital elements of Comet C/2017 S6 (Catalina) at epoch 16 November 2017 00:00 UTC (JD: 2458074.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00138681
Orbit inclination i 152.82685230°
Perihelion distance q 1.54291924 AU
230,817,433 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2018-Feb-26 22:24:46
2,458,176.4339 JD
Argument of perihelion peri 134.68625464194°
Longitude of the ascending node node 130.87308565249°
Mean anomaly M -0.0027072945837398°
Mean motion n 0.00002656°/day
Closest approach to Earth* 2017-Nov-27
Distance of closest approach* 1.21167828 AU
181,264,491 km

* 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.