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 15.82.

Raise, transit, set times

From Greenwich, United Kingdom [change], Comet C/2014 A4 (SONEAR) rises at 20:01, transits at 23:35 (altitude: 13.2°) and sets at 03:13 (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 Nov 22 15.86 04h 22m 24s -25° 34’ 26” Eridanus
2014 Nov 23 15.86 04h 20m 49s -25° 32’ 49” Eridanus
2014 Nov 24 15.85 04h 19m 14s -25° 30’ 59” Eridanus
2014 Nov 25 15.85 04h 17m 39s -25° 28’ 53” Eridanus
2014 Nov 26 15.84 04h 16m 04s -25° 26’ 30” Eridanus
2014 Nov 27 15.83 04h 14m 27s -25° 23’ 54” Eridanus
2014 Nov 28 15.83 04h 12m 52s -25° 21’ 03” Eridanus
2014 Nov 29 15.82 04h 11m 17s -25° 17’ 57” Eridanus
2014 Nov 30 15.82 04h 09m 42s -25° 14’ 35” Eridanus
2014 Dec 01 15.81 04h 08m 05s -25° 10’ 58” Eridanus
2014 Dec 02 15.81 04h 06m 30s -25° 07’ 05” Eridanus
2014 Dec 03 15.81 04h 04m 54s -25° 02’ 57” Eridanus
2014 Dec 04 15.80 04h 03m 20s -24° 58’ 36” Eridanus
2014 Dec 05 15.80 04h 01m 45s -24° 53’ 58” 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.