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 Lepus. Its estimated magnitude is 16.84, and its brightness is currently increasing.

Raise, transit, set times

From Greenwich, United Kingdom [change], Comet C/2014 A4 (SONEAR) rises at 01:47, transits at 05:46 (altitude: 16.8°) and sets at 09:45 (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 Sep 10 16.92 05h 33m 28s -21° 07’ 33” Lepus
2014 Sep 11 16.91 05h 33m 11s -21° 12’ 19” Lepus
2014 Sep 12 16.89 05h 32m 53s -21° 17’ 07” Lepus
2014 Sep 13 16.88 05h 32m 35s -21° 21’ 57” Lepus
2014 Sep 14 16.87 05h 32m 14s -21° 26’ 52” Lepus
2014 Sep 15 16.86 05h 31m 54s -21° 31’ 49” Lepus
2014 Sep 16 16.85 05h 31m 32s -21° 36’ 48” Lepus
2014 Sep 17 16.84 05h 31m 09s -21° 41’ 51” Lepus
2014 Sep 18 16.83 05h 30m 46s -21° 46’ 55” Lepus
2014 Sep 19 16.82 05h 30m 20s -21° 52’ 02” Lepus
2014 Sep 20 16.81 05h 29m 54s -21° 57’ 11” Lepus
2014 Sep 21 16.79 05h 29m 26s -22° 02’ 22” Lepus
2014 Sep 22 16.78 05h 28m 59s -22° 07’ 36” Lepus
2014 Sep 23 16.77 05h 28m 29s -22° 12’ 50” Lepus
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 Feb 25 00:00 UTC (JD: 2456714.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99997975
Orbit inclination i 121.35200449°
Perihelion distance q 4.18108848 AU
625,481,935 km
Aphelion distance Q 412,911.71184315 AU
61,770,713,002,701 km
Semi-major axis a 206,457.94646582 AU
30,885,669,242,318 km
Orbital period period 93,811,397.8400 years
34,264,613,061.5340 days
Date of perihelion transit Tp 2015-Sep-05 21:58:49
2,457,271.4159 JD
Argument of perihelion peri 356.77965841°
Longitude of the ascending node node 29.7325337188°
Mean anomaly M 359.999994149°
Mean motion n 0.00000001°/day
Closest approach to Earth* 2015-Oct-19
Distance of closest approach* 3.20345838 AU
479,230,554 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.