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🌎  Greenwich, United Kingdom [change]


Mars is currently in the constellation of Gemini. The current Right Ascension of Mars is 06h 40m 39s and the Declination is +24° 32’ 16” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Mars is 1.61 (JPL).

Summary of key facts about Mars [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

06h 40m 39s
+24° 32’ 16”
  • Mars is below the horizon from Greenwich, United Kingdom [change].
  • Given its current magnitude, Mars is visible to the naked eye, easy under dark skyes, might be difficult from heavily light pollyuted areas.
  • See also Mars rise and set times.
  • Go to interactive sky chart

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Mars available on TheSkyLive:

Available Resources

Mars Position and Finder Charts

Below we provide Mars finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Mars in Gemini on May, 09 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Mars in Gemini on May, 09 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Mars is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 06h 40m 39s
Dec: +24° 32’ 16”
Deep sky finder chart for Mars
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Mars?, a page that provides all the information needed to find Mars in the sky and additional links to sky charts.

Mars Distance from Earth

The distance of Mars from Earth is currently 312,048,669 kilometers, equivalent to 2.085917 Astronomical Units. Light takes 17 minutes and 20.8823 seconds to travel from Mars and arrive to us.

17 minutes and 20.8823 seconds

The following chart shows the distance of Mars from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Mars from Earth between January 1900 and January 2100

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

Closest approach of Mars to Earth

Between January 1900 and January 2100, the closest approach of Mars to Earth happens on Wed Aug 27 2003 at a distance of 0.372731 Astronomical Units, or 55,759,692 kilometers:

Wed Aug 27 2003

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Mars brightness

The current visual magnitude of Mars is 1.61.


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 1900 and January 2100

Mars rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Mars rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 65.5°
Max altitude: 63.0°
Azimuth: 294.5°

The rise and set times are defined as the time at which the upper limb of Mars touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

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

Mars 15 Days 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
2021 May 02 06h 21m 28s +24° 47’ 23” 1.56 4.6” Gemini
2021 May 03 06h 24m 08s +24° 45’ 50” 1.57 4.6” Gemini
2021 May 04 06h 26m 48s +24° 44’ 04” 1.58 4.6” Gemini
2021 May 05 06h 29m 30s +24° 42’ 10” 1.58 4.6” Gemini
2021 May 06 06h 32m 11s +24° 40’ 05” 1.59 4.5” Gemini
2021 May 07 06h 34m 50s +24° 37’ 50” 1.60 4.5” Gemini
2021 May 08 06h 37m 31s +24° 35’ 23” 1.60 4.5” Gemini
2021 May 09 06h 40m 11s +24° 32’ 48” 1.61 4.5” Gemini
2021 May 10 06h 42m 51s +24° 30’ 02” 1.62 4.5” Gemini
2021 May 11 06h 45m 33s +24° 27’ 05” 1.62 4.5” Gemini
2021 May 12 06h 48m 12s +24° 23’ 57” 1.63 4.4” Gemini
2021 May 13 06h 50m 53s +24° 20’ 40” 1.64 4.4” Gemini
2021 May 14 06h 53m 33s +24° 17’ 13” 1.64 4.4” Gemini
2021 May 15 06h 56m 12s +24° 13’ 36” 1.65 4.4” Gemini