Online Sky Maps and Ephemeris for Solar System Objects

Comets > Comet C/2014 A4 (SONEAR)

  • Currently below the horizon from Greenwich, United Kingdom [change]
  • Rises at 14:00, transits at 18:32 (maximum altitude: 22.1°) and sets at 23:04 (all times in UTC)
  • See more details about Comet C/2014 A4 (SONEAR) on the tracker page

Screenshot of Comet C/2014 A4 (SONEAR) current position, click to see fullscreen map with additional details:

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

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
2015 Jan 20 16.34 03h 04m 30s -17° 54’ 39” Eridanus
2015 Jan 21 16.35 03h 03m 43s -17° 42’ 50” Eridanus
2015 Jan 22 16.35 03h 02m 57s -17° 30’ 59” Eridanus
2015 Jan 23 16.35 03h 02m 13s -17° 19’ 05” Eridanus
2015 Jan 24 16.36 03h 01m 31s -17° 07’ 09” Eridanus
2015 Jan 25 16.36 03h 00m 48s -16° 55’ 12” Eridanus
2015 Jan 26 16.36 03h 00m 07s -16° 43’ 14” Eridanus
2015 Jan 27 16.37 02h 59m 29s -16° 31’ 14” Eridanus
2015 Jan 28 16.37 02h 58m 50s -16° 19’ 13” Eridanus
2015 Jan 29 16.38 02h 58m 14s -16° 07’ 12” Eridanus
2015 Jan 30 16.38 02h 57m 38s -15° 55’ 09” Eridanus
2015 Jan 31 16.38 02h 57m 03s -15° 43’ 06” Eridanus
2015 Feb 01 16.39 02h 56m 30s -15° 31’ 04” Eridanus
2015 Feb 02 16.39 02h 55m 58s -15° 19’ 01” Eridanus

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 Aug 07 00:00 UTC (JD: 2456877.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00030593
Orbit inclination i 121.35220272°
Perihelion distance q 4.18056642 AU
625,403,836 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 21:03:32
2,457,271.3775 JD
Argument of perihelion peri 356.785533645°
Longitude of the ascending node node 29.7319703654°
Mean anomaly M -0.000243019143112°
Mean motion n 0.00000062°/day
Closest approach to Earth* 2015-Oct-19
Distance of closest approach* 3.20334764 AU
479,213,987 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.