Comet C/2017 E4 (Lovejoy)
Comet C/2017 E4 (Lovejoy) Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet C/2017 E4 (Lovejoy) 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/2017 E4 (Lovejoy) Rise and Set Times
Comet C/2017 E4 (Lovejoy) is currently not visible from Greenwich, United Kingdom [change]
Comet C/2017 E4 (Lovejoy) Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 E4 (Lovejoy) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 E4 (Lovejoy) 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/2017 E4 (Lovejoy) Ephemeris
The following table lists the ephemerides of Comet C/2017 E4 (Lovejoy) 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 E4 (Lovejoy) in our Online Planetarium at the chosen date.
|2018 Oct 11||04h 37m 05s||-41° 20’ 27”||44.54||Caelum|
|2018 Oct 12||04h 36m 36s||-41° 28’ 14”||44.56||Caelum|
|2018 Oct 13||04h 36m 06s||-41° 35’ 56”||44.58||Caelum|
|2018 Oct 14||04h 35m 34s||-41° 43’ 30”||44.60||Caelum|
|2018 Oct 15||04h 35m 02s||-41° 50’ 58”||44.62||Caelum|
|2018 Oct 16||04h 34m 28s||-41° 58’ 20”||44.64||Caelum|
|2018 Oct 17||04h 33m 56s||-42° 05’ 35”||44.66||Caelum|
|2018 Oct 18||04h 33m 21s||-42° 12’ 43”||44.67||Caelum|
|2018 Oct 19||04h 32m 47s||-42° 19’ 45”||44.69||Caelum|
|2018 Oct 20||04h 32m 11s||-42° 26’ 39”||44.71||Caelum|
|2018 Oct 21||04h 31m 35s||-42° 33’ 26”||44.73||Caelum|
|2018 Oct 22||04h 30m 57s||-42° 40’ 05”||44.75||Caelum|
|2018 Oct 23||04h 30m 20s||-42° 46’ 37”||44.77||Caelum|
|2018 Oct 24||04h 29m 42s||-42° 53’ 02”||44.79||Caelum|
Distance of Comet C/2017 E4 (Lovejoy) from Earth
The following chart shows the distance of Comet C/2017 E4 (Lovejoy) 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 E4 (Lovejoy) is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet C/2017 E4 (Lovejoy)
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2017 E4 (Lovejoy), 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/2017 E4 (Lovejoy) Orbital Elements
The following table lists the orbital elements of Comet C/2017 E4 (Lovejoy) at epoch 30 March 2017 00:00 UTC (JD: 2457843.5). Source: JPL Small-Body Database
|Perihelion distance||q||0.49357325 AU
|Date of perihelion transit||Tp||2017-Apr-23 07:32:50
|Next perihelion transit||12457-Jun-29 09:18
|Argument of perihelion||peri||87.243851188204°|
|Longitude of the ascending node||node||223.17182838589°|
|Closest approach to Earth*||2017-Mar-31|
|Distance of closest approach*||0.60600429 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.