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Mars

Available Resources

Mars Sky Charts and Coordinates

This is a simplified sky chart, showing where Mars is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Mars in Capricornus on August, 17 2018
High Precision Live Sky Chart
20h 10m 41s
-26° 33’ 13”
23.1”
-2.48
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Mars Rise and Set Times

Today's Mars rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 116.6°
Max altitude: 12.0°
Azimuth: 243.4°

Mars Ephemeris

The following table lists the ephemerides of Mars computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Mars in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Apparent DiameterDiameter Constellation
2018 Aug 10 20h 16m 27s -26° 27’ 06” -2.63 23.9” Capricornus
2018 Aug 11 20h 15m 30s -26° 28’ 53” -2.61 23.8” Capricornus
2018 Aug 12 20h 14m 38s -26° 30’ 23” -2.59 23.7” Capricornus
2018 Aug 13 20h 13m 46s -26° 31’ 33” -2.57 23.6” Capricornus
2018 Aug 14 20h 12m 57s -26° 32’ 26” -2.55 23.5” Capricornus
2018 Aug 15 20h 12m 11s -26° 33’ 01” -2.53 23.4” Capricornus
2018 Aug 16 20h 11m 29s -26° 33’ 16” -2.51 23.3” Capricornus
2018 Aug 17 20h 10m 49s -26° 33’ 15” -2.48 23.1” Capricornus
2018 Aug 18 20h 10m 13s -26° 32’ 57” -2.46 23.0” Capricornus
2018 Aug 19 20h 09m 38s -26° 32’ 21” -2.44 22.9” Capricornus
2018 Aug 20 20h 09m 07s -26° 31’ 27” -2.41 22.7” Capricornus
2018 Aug 21 20h 08m 40s -26° 30’ 16” -2.39 22.6” Capricornus
2018 Aug 22 20h 08m 17s -26° 28’ 50” -2.36 22.4” Capricornus
2018 Aug 23 20h 07m 57s -26° 27’ 06” -2.34 22.3” Capricornus

Distance of Mars from Earth

The following chart shows the distance of Mars from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of Mars is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Mars from Earth between January 2013 and December 2075

Light Curve of Mars

The following chart is the predicted light curve (visual magnitude as a function of time) of Mars, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Mars between January 2013 and December 2075

Mars Physical Data

The following shows the known values of the most important physical parameters of Mars. Source: JPL Small-Body Database

Physical Parameter Value Relative to Earth
Diameter 6779 km 0.5320
Mass 0.641693 x 1024 kg 0.1074
Density 3.934 gr/cm3 0.7135
Escape Velocity 5.03 km/s 0.4495
Sideral Rotation 24.6230 hours 1.0288
Absolute Magnitude -1.52
Geometric Albedo 0.15