Online Sky Maps and Ephemeris for Solar System Objects

Information about Comet C/2014 A4 (SONEAR)

Available Resources

  1. Rise, Transit ans Set Times
  2. Live Position and Finder Chart
  3. Planetarium
  4. Ephemeris
  5. Light Curve
  6. Distance from Earth
  7. Orbital Elements

15 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 May 19 16.51 03h 03m 59s +02° 17’ 16” Cetus
2015 May 20 16.51 03h 04m 18s +02° 24’ 42” Cetus
2015 May 21 16.50 03h 04m 36s +02° 32’ 08” Cetus
2015 May 22 16.50 03h 04m 55s +02° 39’ 29” Cetus
2015 May 23 16.50 03h 05m 14s +02° 46’ 49” Cetus
2015 May 24 16.49 03h 05m 32s +02° 54’ 06” Cetus
2015 May 25 16.49 03h 05m 52s +03° 01’ 20” Cetus
2015 May 26 16.48 03h 06m 10s +03° 08’ 34” Cetus
2015 May 27 16.48 03h 06m 29s +03° 15’ 43” Cetus
2015 May 28 16.47 03h 06m 47s +03° 22’ 50” Cetus
2015 May 29 16.47 03h 07m 05s +03° 29’ 57” Cetus
2015 May 30 16.47 03h 07m 23s +03° 37’ 00” Cetus
2015 May 31 16.46 03h 07m 40s +03° 44’ 00” Cetus
2015 Jun 01 16.46 03h 07m 58s +03° 50’ 58” Cetus

Light Curve

The following chart is the predicted light curve according to the most recent C/2014 A4 (SONEAR) ephemerides data.

Data is sampled with a 2 days interval, so there might be inaccuracies for objects changing brightness very rapidly. Also, for comets there might be in general large discrepancies between the observed and predicted brightness because of the their highly unpredictable behaviour.

Distance from Earth

The following chart shows the distance of Comet C/2014 A4 (SONEAR) from Earth as a function of time.

Data is sampled with a 2 days interval, there might be inaccuracies for objects passing very close to Earth, at the time of their closest distance to the earth.

Orbital Elements

The following table reports Comet C/2014 A4 (SONEAR) orbital elements at epoch 2014 Sep 18 00:00 UTC (JD: 2456919.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00038043
Orbit inclination i 121.35256980°
Perihelion distance q 4.18045005 AU
625,386,427 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 21:01:46
2,457,271.3762 JD
Argument of perihelion peri 356.787202587°
Longitude of the ascending node node 29.7313453528°
Mean anomaly M -0.000301069357385°
Mean motion n 0.00000086°/day
Closest approach to Earth* 2015-Oct-19
Distance of closest approach* 3.20331602 AU
479,209,256 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2030-Jan-01, with a sampling interval of 1 day.