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Comet C/2013 A1 (Siding Spring)

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C/2013 A1 (Siding Spring) in Ursa Major on May,27 2016
Sky map showing C/2013 A1 (Siding Spring) in Ursa Major on May, 27 2016
Click on image to view high precision map.

Comet C/2013 A1 (Siding Spring) Orbit Diagram (beta)

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3D Orbit Visualizer: Orbit Diagram of Comet C/2013 A1 (Siding Spring) (requires a WebGL enabled browser)

Comet C/2013 A1 (Siding Spring) Ephemeris

The following table lists the ephemerides of Comet C/2013 A1 (Siding Spring) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to visualize an interactive sky map showing where Comet C/2013 A1 (Siding Spring) will be located at the chosen date. Real time current position of Comet C/2013 A1 (Siding Spring) is also available.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2016 May 20 19.83 11h 21m 18s +47° 12’ 56” Ursa Major
2016 May 21 19.84 11h 20m 51s +47° 07’ 06” Ursa Major
2016 May 22 19.86 11h 20m 25s +47° 01’ 14” Ursa Major
2016 May 23 19.87 11h 19m 59s +46° 55’ 18” Ursa Major
2016 May 24 19.88 11h 19m 36s +46° 49’ 22” Ursa Major
2016 May 25 19.89 11h 19m 13s +46° 43’ 22” Ursa Major
2016 May 26 19.91 11h 18m 51s +46° 37’ 21” Ursa Major
2016 May 27 19.92 11h 18m 29s +46° 31’ 18” Ursa Major
2016 May 28 19.93 11h 18m 10s +46° 25’ 13” Ursa Major
2016 May 29 19.94 11h 17m 52s +46° 19’ 05” Ursa Major
2016 May 30 19.96 11h 17m 34s +46° 12’ 57” Ursa Major
2016 May 31 19.97 11h 17m 17s +46° 06’ 48” Ursa Major
2016 Jun 01 19.98 11h 17m 00s +46° 00’ 38” Ursa Major
2016 Jun 02 19.99 11h 16m 45s +45° 54’ 26” Ursa Major

Distance of Comet C/2013 A1 (Siding Spring) from Earth

The following chart shows the distance of Comet C/2013 A1 (Siding Spring) from Earth as a function of time. Distance data is sampled with a 2 days interval, so please keep in mind that there might be inaccuracies around the time of closest approach for objects passing extremely close to Earth. Real time current distance of Comet C/2013 A1 (Siding Spring) from Earth is also available.

Distance of Comet C/2013 A1 (Siding Spring) from Earth between January 2013 and January 2030

Light Curve of Comet C/2013 A1 (Siding Spring)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2013 A1 (Siding Spring), according to the most recent ephemerides data.

The magnitude data is sampled with a 2 days interval, so there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. Also, for comets there could be large discrepancies between the observed and predicted brightness because of the their highly dynamic and unpredictable behaviour. To get precise information about the current magnitude of Comet C/2013 A1 (Siding Spring), updated in real time, please go to the Comet C/2013 A1 (Siding Spring) live tracker page.

Predicted magnitude of Comet C/2013 A1 (Siding Spring) between January 2013 and January 2030

Orbital Elements

The following table lists the orbital elements of Comet C/2013 A1 (Siding Spring) at epoch 01 April 2016 00:00 UTC (JD: 2457480.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00008553
Orbit inclination i 129.03291761°
Perihelion distance q 1.39976499 AU
209,401,862 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2014-Oct-25 04:13:10
2,456,955.6758 JD
Argument of perihelion peri 2.44916948214°
Longitude of the ascending node node 300.999409924°
Mean anomaly M 0.000247049945361°
Mean motion n 0.00000047°/day
Closest approach to Earth* 2014-Sep-05
Distance of closest approach* 0.89102368 AU
133,295,246 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2030-Jan-01, with a sampling interval of 1 day.