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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 Andromeda on April, 23 2017
High Precision Live Sky Chart
01h 12m 23s
+36° 49’ 30”
 = 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: 53.2°
Max altitude: 75.3°
Azimuth: 306.8°

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 Apr 16 13.22 00h 14m 21s +35° 25’ 28” Andromeda
2017 Apr 17 13.23 00h 23m 34s +35° 56’ 06” Andromeda
2017 Apr 18 13.24 00h 32m 29s +36° 19’ 37” Andromeda
2017 Apr 19 13.26 00h 41m 04s +36° 36’ 35” Andromeda
2017 Apr 20 13.29 00h 49m 23s +36° 47’ 32” Andromeda
2017 Apr 21 13.33 00h 57m 21s +36° 53’ 00” Andromeda
2017 Apr 22 13.37 01h 05m 02s +36° 53’ 30” Andromeda
2017 Apr 23 13.43 01h 12m 23s +36° 49’ 30” Andromeda
2017 Apr 24 13.49 01h 19m 24s +36° 41’ 29” Andromeda
2017 Apr 25 13.56 01h 26m 09s +36° 29’ 53” Andromeda
2017 Apr 26 13.64 01h 32m 36s +36° 15’ 11” Andromeda
2017 Apr 27 13.73 01h 38m 48s +35° 57’ 43” Andromeda
2017 Apr 28 13.82 01h 44m 42s +35° 37’ 54” Andromeda
2017 Apr 29 13.93 01h 50m 21s +35° 16’ 05” Triangulum

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.