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Mercury

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Mercury Position

Mercury is currently in the constellation of Aquarius. The current Right Ascension is 23h 24m 22s and the Declination is -06° 24’ 08”.

23h 24m 22s
-06° 24’ 08”

Simplified sky chart showing where Mercury is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Mercury in Aquarius on April, 04 2020
Field of view: 60x30 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 showing where Mercury is right now (view fullscreen)

Mercury
RA: 23h 24m 22s
Dec: -06° 24’ 08”
Deep sky finder chart for Mercury
Field of view: 60x40 arcmins
View fullscreen

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

Mercury Distance

The distance of Mercury from Earth is currently 159,030,500 kilometers, equivalent to 1.063053 Astronomical Units. Light takes 8 minutes and 50.4686 seconds to travel from Mercury and arrive to us.

159,030,500
1.063053
8 minutes and 50.4686 seconds

The following chart shows the distance of Mercury 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 Mercury from Earth between January 2013 and December 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 Mercury from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Mercury to Earth

Between January 2013 and December 2100 the closest approach of Mercury to Earth happens on Sun May 31 2015 at a distance of 0.54903596 Astronomical Units, or 82,134,610 kilometers:

Sun May 31 2015
82,134,610
0.549036

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

Mercury brightness

The current visual magnitude of Mercury is -0.04.

-0.04
6.3”

The following chart is the predicted light curve (visual magnitude as a function of time) of Mercury, 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 Mercury between January 2013 and December 2100

Mercury rise and set times

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

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

Azimuth: 96.4°
Max altitude: 32.2°
Azimuth: 263.8°
Mercury is below the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Mercury 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.

Mercury Physical Data

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

Physical Parameter Value Relative to Earth
Diameter 4879.4 km 0.3829
Mass 0.330104 x 1024 kg 0.0553
Density 5.427 gr/cm3 0.9843
Escape Velocity 4.25 km/s 0.3798
Sideral Rotation 1,407.5088 hours 58.8068
Absolute Magnitude -0.6
Geometric Albedo 0.106

Mercury 15 Days Ephemeris

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

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Apparent DiameterDiameter Constellation
2020 Mar 28 22h 49m 12s -09° 24’ 53” 0.08 7.0” Aquarius
2020 Mar 29 22h 53m 45s -09° 04’ 04” 0.07 6.9” Aquarius
2020 Mar 30 22h 58m 27s -08° 41’ 47” 0.05 6.8” Aquarius
2020 Mar 31 23h 03m 15s -08° 18’ 05” 0.03 6.7” Aquarius
2020 Apr 01 23h 08m 08s -07° 53’ 00” 0.02 6.6” Aquarius
2020 Apr 02 23h 13m 06s -07° 26’ 35” 0.00 6.5” Aquarius
2020 Apr 03 23h 18m 11s -06° 58’ 51” -0.02 6.4” Aquarius
2020 Apr 04 23h 23m 21s -06° 29’ 50” -0.04 6.3” Aquarius
2020 Apr 05 23h 28m 36s -05° 59’ 32” -0.06 6.3” Aquarius
2020 Apr 06 23h 33m 56s -05° 28’ 01” -0.08 6.2” Aquarius
2020 Apr 07 23h 39m 21s -04° 55’ 18” -0.11 6.1” Aquarius
2020 Apr 08 23h 44m 52s -04° 21’ 21” -0.13 6.0” Aquarius
2020 Apr 09 23h 50m 26s -03° 46’ 17” -0.16 6.0” Aquarius
2020 Apr 10 23h 56m 05s -03° 10’ 02” -0.19 5.9” Pisces