Online Sky Maps and Accurate Ephemeris Computation for Solar System Objects
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Ephemeris Computation

Use this form to compute ephemerides for custom date and time and display predicted position of Comet C/2014 A4 (SONEAR) in the sky. Ephemeris data for Comet C/2014 A4 (SONEAR) is available for the following date range: 01 Jan 2013 - 01 Jan 2025.

Time: : UTC

Comets > Comet C/2014 A4 (SONEAR)

Area of the sky where Comet C/2014 A4 (SONEAR) is now (live position).

Today Comet C/2014 A4 (SONEAR) is in the constellation of Eridanus. Its estimated magnitude is 15.76.

Raise, transit, set times

From Greenwich, United Kingdom [change], Comet C/2014 A4 (SONEAR) rises at 18:03, transits at 21:51 (altitude: 15.1°) and sets at 01:42 (all times in UTC).

Fourteen days ephemeris

Ephemeris of Comet C/2014 A4 (SONEAR) in tabluar form, computed for the past and next 7 days. Click on each row to view the sky map in the online planetarium:

Date Magnitude Right Ascension Declination Constellation
2014 Dec 11 15.78 03h 52m 24s -24° 21’ 07” Eridanus
2014 Dec 12 15.77 03h 50m 53s -24° 14’ 49” Eridanus
2014 Dec 13 15.77 03h 49m 23s -24° 08’ 17” Fornax
2014 Dec 14 15.77 03h 47m 53s -24° 01’ 32” Fornax
2014 Dec 15 15.77 03h 46m 23s -23° 54’ 33” Eridanus
2014 Dec 16 15.77 03h 44m 53s -23° 47’ 20” Eridanus
2014 Dec 17 15.76 03h 43m 26s -23° 39’ 55” Eridanus
2014 Dec 18 15.76 03h 41m 58s -23° 32’ 17” Eridanus
2014 Dec 19 15.76 03h 40m 32s -23° 24’ 26” Eridanus
2014 Dec 20 15.76 03h 39m 07s -23° 16’ 23” Eridanus
2014 Dec 21 15.76 03h 37m 42s -23° 08’ 09” Eridanus
2014 Dec 22 15.76 03h 36m 20s -22° 59’ 44” Eridanus
2014 Dec 23 15.76 03h 34m 57s -22° 51’ 06” Eridanus
2014 Dec 24 15.76 03h 33m 36s -22° 42’ 17” Eridanus
You can also compute Comet C/2014 A4 (SONEAR) ephemeris for custom dates using the planetarium feature or the form on the right sidebar.

Predicted light curve

Comet C/2014 A4 (SONEAR) predicted light curve showing magnitude as a function of time:

Data is sampled with a 2 days interval, so there might be inaccuracies for objects which change brightness very rapidly (for instance for comets when they are close to perihelion). Also, for comets there might be in general large discrepancies between the observed and predicted brightness because of the their highly dynamic behaviour.

Orbital elements

The following table reports Comet C/2014 A4 (SONEAR) orbital elements at epoch 2014 May 29 00:00 UTC (JD: 2456807.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00018328
Orbit inclination i 121.35207829°
Perihelion distance q 4.18086482 AU
625,448,475 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2015-Sep-05 21:04:31
2,457,271.3781 JD
Argument of perihelion peri 356.780664244°
Longitude of the ascending node node 29.7322325437°
Mean anomaly M -0.000132699714271°
Mean motion n 0.00000029°/day
Closest approach to Earth* 2015-Oct-19
Distance of closest approach* 3.20344371 AU
479,228,359 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2025-Jan-01, with a sampling interval of 1 day.