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 16.04, and its brightness is currently increasing.

Raise, transit, set times

From Greenwich, United Kingdom [change], Comet C/2014 A4 (SONEAR) rises at 22:38, transits at 02:16 (altitude: 13.3°) and sets at 05:50 (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 Oct 24 16.12 05h 03m 02s -24° 47’ 54” Lepus
2014 Oct 25 16.11 05h 01m 53s -24° 51’ 52” Lepus
2014 Oct 26 16.10 05h 00m 42s -24° 55’ 44” Lepus
2014 Oct 27 16.09 04h 59m 30s -24° 59’ 27” Lepus
2014 Oct 28 16.08 04h 58m 17s -25° 03’ 03” Lepus
2014 Oct 29 16.07 04h 57m 02s -25° 06’ 30” Lepus
2014 Oct 30 16.06 04h 55m 46s -25° 09’ 48” Lepus
2014 Oct 31 16.05 04h 54m 29s -25° 12’ 59” Eridanus
2014 Nov 01 16.04 04h 53m 12s -25° 15’ 59” Eridanus
2014 Nov 02 16.03 04h 51m 52s -25° 18’ 48” Eridanus
2014 Nov 03 16.02 04h 50m 31s -25° 21’ 29” Eridanus
2014 Nov 04 16.01 04h 49m 10s -25° 23’ 59” Eridanus
2014 Nov 05 16.00 04h 47m 48s -25° 26’ 20” Eridanus
2014 Nov 06 15.99 04h 46m 26s -25° 28’ 28” 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 Mar 29 00:00 UTC (JD: 2456746.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00005055
Orbit inclination i 121.35201299°
Perihelion distance q 4.18110475 AU
625,484,370 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 21:32:37
2,457,271.3977 JD
Argument of perihelion peri 356.77824452°
Longitude of the ascending node node 29.7324818042°
Mean anomaly M -2.17495492549E-5°
Mean motion n 0.00000004°/day
Closest approach to Earth* 2015-Oct-19
Distance of closest approach* 3.20353786 AU
479,242,443 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.