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🌎 Location: Greenwich, United Kingdom [change]

Comet C/2013 A1 (Siding Spring)

Comet C/2013 A1 (Siding Spring) is currently in the constellation of Leo Minor. The current Right Ascension of Comet C/2013 A1 (Siding Spring) is 10h 09m 02s and the Declination is +35° 21’ 33” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2013 A1 (Siding Spring) is 25.78 (JPL).

Summary of key facts about Comet C/2013 A1 (Siding Spring) [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]:

10h 09m 02s
+35° 21’ 33”
Leo Minor
25.78
  • C/2013 A1 (Siding Spring) is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the East-South-East direction at an altitude of 56° above the horizon.
  • Given its current magnitude, C/2013 A1 (Siding Spring) is visible only through long exposure photography.
  • See also C/2013 A1 (Siding Spring) rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet C/2013 A1 (Siding Spring) available on TheSkyLive:

Available Resources

Comet C/2013 A1 (Siding Spring) Position and Finder Charts

Below we provide Comet C/2013 A1 (Siding Spring) 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.

Map showing Comet C/2013 A1 (Siding Spring) in Leo Minor on August, 06 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2013 A1 (Siding Spring) in Leo Minor on August, 06 2020
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2013 A1 (Siding Spring) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2013 A1 (Siding Spring)
RA: 10h 09m 02s
Dec: +35° 21’ 33”
Deep sky finder chart for Comet C/2013 A1 (Siding Spring)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2013 A1 (Siding Spring)?, a page that provides all the information needed to find Comet C/2013 A1 (Siding Spring) in the sky and additional links to sky charts.

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

The distance of Comet C/2013 A1 (Siding Spring) from Earth is currently 2,654,365,315 kilometers, equivalent to 17.743336 Astronomical Units. Light takes 2 hours, 27 minutes and 34.0096 seconds to travel from Comet C/2013 A1 (Siding Spring) and arrive to us.

2,654,365,315
17.743336
2 hours, 27 minutes and 34.0096 seconds

The following chart shows the distance of Comet C/2013 A1 (Siding Spring) 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.

Distance of Comet C/2013 A1 (Siding Spring) from Earth between January 2013 and December 2100

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 C/2013 A1 (Siding Spring) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2013 A1 (Siding Spring) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2013 A1 (Siding Spring) to Earth happens on Fri Sep 5 2014 at a distance of 0.89102369 Astronomical Units, or 133,295,247 kilometers:

Fri Sep 5 2014
133,295,247
0.891024

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet C/2013 A1 (Siding Spring) brightness

The current visual magnitude of Comet C/2013 A1 (Siding Spring) is 25.78.

25.78
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-

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 C/2013 A1 (Siding Spring), 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/2013 A1 (Siding Spring) between January 2013 and December 2100

Comet C/2013 A1 (Siding Spring) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet C/2013 A1 (Siding Spring) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 54.6°
Max altitude: 73.9°
Azimuth: 305.3°

The rise and set times are defined as the time at which the upper limb of Comet C/2013 A1 (Siding Spring) 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 C/2013 A1 (Siding Spring) 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 2.4491694821387°
Longitude of the ascending node node 300.99940992437°
Mean anomaly M 0.00024704994536109°
Mean motion n 0.00000047°/day

Visualization of Comet C/2013 A1 (Siding Spring) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2013 A1 (Siding Spring) with respect of the Sun and the orbits of the major planets. The position of Comet C/2013 A1 (Siding Spring) 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/2013 A1 (Siding Spring)
View Comet C/2013 A1 (Siding Spring) in the 3D Solar System Simulator

Comet C/2013 A1 (Siding Spring) 15 Days 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 locate Comet C/2013 A1 (Siding Spring) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Jul 30 10h 07m 26s +35° 33’ 05” 25.76 Leo Minor
2020 Jul 31 10h 07m 38s +35° 31’ 28” 25.76 Leo Minor
2020 Aug 01 10h 07m 51s +35° 29’ 53” 25.76 Leo Minor
2020 Aug 02 10h 08m 04s +35° 28’ 19” 25.77 Leo Minor
2020 Aug 03 10h 08m 17s +35° 26’ 47” 25.77 Leo Minor
2020 Aug 04 10h 08m 30s +35° 25’ 14” 25.77 Leo Minor
2020 Aug 05 10h 08m 44s +35° 23’ 43” 25.77 Leo Minor
2020 Aug 06 10h 08m 57s +35° 22’ 11” 25.78 Leo Minor
2020 Aug 07 10h 09m 10s +35° 20’ 43” 25.78 Leo Minor
2020 Aug 08 10h 09m 23s +35° 19’ 14” 25.78 Leo Minor
2020 Aug 09 10h 09m 36s +35° 17’ 47” 25.78 Leo Minor
2020 Aug 10 10h 09m 48s +35° 16’ 21” 25.78 Leo Minor
2020 Aug 11 10h 10m 03s +35° 14’ 54” 25.79 Leo Minor
2020 Aug 12 10h 10m 15s +35° 13’ 31” 25.79 Leo Minor