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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 Leo on August, 22 2017
High Precision Live Sky Chart
09h 33m 29s
+15° 43’ 00”
1.77
 = 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: 74.3°
Max altitude: 54.2°
Azimuth: 285.7°

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
2017 Aug 15 1.75 09h 15m 44s +17° 05’ 26” Cancer
2017 Aug 16 1.75 09h 18m 17s +16° 53’ 59” Cancer
2017 Aug 17 1.76 09h 20m 51s +16° 42’ 25” Cancer
2017 Aug 18 1.76 09h 23m 22s +16° 30’ 44” Leo
2017 Aug 19 1.76 09h 25m 54s +16° 18’ 57” Leo
2017 Aug 20 1.77 09h 28m 27s +16° 07’ 05” Leo
2017 Aug 21 1.77 09h 30m 57s +15° 55’ 05” Leo
2017 Aug 22 1.77 09h 33m 29s +15° 43’ 00” Leo
2017 Aug 23 1.77 09h 35m 59s +15° 30’ 50” Leo
2017 Aug 24 1.78 09h 38m 30s +15° 18’ 33” Leo
2017 Aug 25 1.78 09h 40m 59s +15° 06’ 11” Leo
2017 Aug 26 1.78 09h 43m 29s +14° 53’ 41” Leo
2017 Aug 27 1.78 09h 45m 59s +14° 41’ 08” Leo
2017 Aug 28 1.79 09h 48m 28s +14° 28’ 29” Leo

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