Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]


Mars is currently in the constellation of Aries. The current Right Ascension of Mars is 02h 16m 23s and the Declination is +14° 54’ 39” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Mars is 0.23 (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]:

02h 16m 23s
+14° 54’ 39”
  • Mars is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the East-South-East direction at an altitude of 36° above the horizon.
  • Given its current magnitude, Mars is visible to the naked eye, even from highly light polluted 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 Aries on January, 21 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Mars in Aries on January, 21 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: 02h 16m 23s
Dec: +14° 54’ 39”
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 163,305,026 kilometers, equivalent to 1.091627 Astronomical Units. Light takes 9 minutes and 4.7269 seconds to travel from Mars and arrive to us.

9 minutes and 4.7269 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 0.23.


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: 75.1°
Max altitude: 53.5°
Azimuth: 284.8°

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 Jan 14 02h 01m 46s +13° 32’ 50” 0.07 9.2” Aries
2021 Jan 15 02h 03m 38s +13° 43’ 36” 0.09 9.1” Aries
2021 Jan 16 02h 05m 31s +13° 54’ 23” 0.12 9.0” Aries
2021 Jan 17 02h 07m 24s +14° 05’ 08” 0.14 8.9” Aries
2021 Jan 18 02h 09m 20s +14° 15’ 55” 0.16 8.8” Aries
2021 Jan 19 02h 11m 16s +14° 26’ 39” 0.18 8.8” Aries
2021 Jan 20 02h 13m 12s +14° 37’ 24” 0.20 8.7” Aries
2021 Jan 21 02h 15m 10s +14° 48’ 07” 0.22 8.6” Aries
2021 Jan 22 02h 17m 08s +14° 58’ 50” 0.24 8.5” Aries
2021 Jan 23 02h 19m 06s +15° 09’ 32” 0.27 8.5” Aries
2021 Jan 24 02h 21m 07s +15° 20’ 12” 0.29 8.4” Aries
2021 Jan 25 02h 23m 08s +15° 30’ 50” 0.31 8.3” Aries
2021 Jan 26 02h 25m 09s +15° 41’ 26” 0.33 8.2” Aries
2021 Jan 27 02h 27m 12s +15° 52’ 00” 0.35 8.2” Aries