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Comet C/2017 E4 (Lovejoy)

Available Resources

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.

Comet C/2017 E4 (Lovejoy) in Taurus on May, 30 2017
High Precision Live Sky Chart
03h 33m 11s
+21° 19’ 24”
 = 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 E4 (Lovejoy) Rise and Set Times

Today's Comet C/2017 E4 (Lovejoy) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 68.7°
Max altitude: 59.8°
Azimuth: 291.3°

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!

Orbit Diagram of Comet C/2017 E4 (Lovejoy)
View Comet C/2017 E4 (Lovejoy) in the 3D Solar System Simulator

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.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 May 23 16.86 03h 17m 12s +24° 12’ 47” Aries
2017 May 24 16.97 03h 19m 39s +23° 47’ 09” Aries
2017 May 25 17.07 03h 22m 01s +23° 21’ 50” Aries
2017 May 26 17.18 03h 24m 20s +22° 56’ 48” Aries
2017 May 27 17.28 03h 26m 38s +22° 32’ 03” Aries
2017 May 28 17.38 03h 28m 51s +22° 07’ 33” Aries
2017 May 29 17.47 03h 31m 03s +21° 43’ 22” Taurus
2017 May 30 17.57 03h 33m 11s +21° 19’ 24” Taurus
2017 May 31 17.66 03h 35m 17s +20° 55’ 41” Taurus
2017 Jun 01 17.75 03h 37m 21s +20° 32’ 15” Taurus
2017 Jun 02 17.84 03h 39m 21s +20° 09’ 01” Taurus
2017 Jun 03 17.93 03h 41m 21s +19° 46’ 00” Taurus
2017 Jun 04 18.01 03h 43m 18s +19° 23’ 12” Taurus
2017 Jun 05 18.10 03h 45m 12s +19° 00’ 36” Taurus

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.

Distance of Comet C/2017 E4 (Lovejoy) from Earth between January 2014 and January 2035

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.

Predicted magnitude of Comet C/2017 E4 (Lovejoy) between January 2014 and January 2035

Comet C/2017 E4 (Lovejoy) Orbital Elements

The following table lists the orbital elements of Comet C/2017 E4 (Lovejoy) at epoch 11 March 2017 00:00 UTC (JD: 2457824.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00000000
Orbit inclination i 88.16102449°
Perihelion distance q 0.49382542 AU
73,875,232 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2017-Apr-23 07:11:17
2,457,866.7995 JD
Argument of perihelion peri 87.192687819206°
Longitude of the ascending node node 223.18799457559°
Mean anomaly M °
Mean motion n 0.00000000°/day
Closest approach to Earth* 2017-Mar-31
Distance of closest approach* 0.60629455 AU
90,700,373 km

* NOTE: values for the closest approach are computed for the time interval between 2014-Jan-01 and 2035-Jan-01, with a sampling interval of 1 day.