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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 Ophiucus on February, 21 2018
High Precision Live Sky Chart
16h 56m 03s
-22° 13’ 09”
0.92
 = 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: 112.2°
Max altitude: 16.3°
Azimuth: 247.8°

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 MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Feb 14 1.02 16h 38m 04s -21° 36’ 07” Ophiucus
2018 Feb 15 1.01 16h 40m 40s -21° 41’ 52” Ophiucus
2018 Feb 16 0.99 16h 43m 14s -21° 47’ 26” Ophiucus
2018 Feb 17 0.98 16h 45m 47s -21° 52’ 53” Ophiucus
2018 Feb 18 0.97 16h 48m 21s -21° 58’ 09” Ophiucus
2018 Feb 19 0.95 16h 50m 56s -22° 03’ 17” Ophiucus
2018 Feb 20 0.94 16h 53m 30s -22° 08’ 17” Ophiucus
2018 Feb 21 0.92 16h 56m 03s -22° 13’ 09” Ophiucus
2018 Feb 22 0.91 16h 58m 38s -22° 17’ 50” Ophiucus
2018 Feb 23 0.90 17h 01m 11s -22° 22’ 24” Ophiucus
2018 Feb 24 0.88 17h 03m 46s -22° 26’ 48” Ophiucus
2018 Feb 25 0.87 17h 06m 20s -22° 31’ 05” Ophiucus
2018 Feb 26 0.85 17h 08m 53s -22° 35’ 12” Ophiucus
2018 Feb 27 0.84 17h 11m 27s -22° 39’ 10” Ophiucus

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