Comet C/2012 S1 (ISON)
Comet C/2012 S1 (ISON) Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet C/2012 S1 (ISON) 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.
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 behvior 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.
Comet C/2012 S1 (ISON) Rise and Set Times
Comet C/2012 S1 (ISON) is circumpolar from Greenwich, United Kingdom [change] and transits at 23:12 UTC (altitude: 77.4°)
Comet C/2012 S1 (ISON) Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2012 S1 (ISON) with respect of the Sun and the orbits of the major planets. The position of Comet C/2012 S1 (ISON) 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 C/2012 S1 (ISON) Ephemeris
The following table lists the ephemerides of Comet C/2012 S1 (ISON) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2012 S1 (ISON) in our Online Planetarium at the chosen date.
|2019 Jan 15||07h 23m 12s||+38° 49’ 09”||N.A.||Auriga|
|2019 Jan 16||07h 22m 53s||+38° 49’ 31”||N.A.||Auriga|
|2019 Jan 17||07h 22m 35s||+38° 49’ 50”||N.A.||Auriga|
|2019 Jan 18||07h 22m 15s||+38° 50’ 08”||N.A.||Auriga|
|2019 Jan 19||07h 21m 57s||+38° 50’ 24”||N.A.||Auriga|
|2019 Jan 20||07h 21m 38s||+38° 50’ 39”||N.A.||Auriga|
|2019 Jan 21||07h 21m 20s||+38° 50’ 53”||N.A.||Auriga|
|2019 Jan 22||07h 21m 02s||+38° 51’ 05”||N.A.||Auriga|
|2019 Jan 23||07h 20m 44s||+38° 51’ 15”||N.A.||Auriga|
|2019 Jan 24||07h 20m 26s||+38° 51’ 24”||N.A.||Auriga|
|2019 Jan 25||07h 20m 08s||+38° 51’ 33”||N.A.||Auriga|
|2019 Jan 26||07h 19m 50s||+38° 51’ 39”||N.A.||Auriga|
|2019 Jan 27||07h 19m 33s||+38° 51’ 44”||N.A.||Auriga|
|2019 Jan 28||07h 19m 15s||+38° 51’ 48”||N.A.||Auriga|
Distance of Comet C/2012 S1 (ISON) from Earth
The following chart shows the distance of Comet C/2012 S1 (ISON) 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/2012 S1 (ISON) is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet C/2012 S1 (ISON)
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2012 S1 (ISON), 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 C/2012 S1 (ISON) Orbital Elements
The following table lists the orbital elements of Comet C/2012 S1 (ISON) at epoch 03 December 2013 00:00 UTC (JD: 2456630.5). Source: JPL Small-Body Database
|Perihelion distance||q||0.01245259 AU
|Date of perihelion transit||Tp||2013-Nov-28 18:41:16
|Argument of perihelion||peri||345.53124062058°|
|Longitude of the ascending node||node||295.65203155°|
|Closest approach to Earth*||2013-Dec-27|
|Distance of closest approach*||0.43060397 AU
* 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.