Mercury (Planet)

Image of Mercury
© NASA/JPL/MESSENGER
Finder chart
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Click to enlarge.

Show information for


From Cambridge , Mercury is not observable – it will reach its highest point in the sky during daytime and is no higher than 2° above the horizon at dawn.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.
Name Mercury
Object type Inferior planet
Current position
Computed for:26 April 2025
Right ascension:00h37m [2]
Declination:+01°00' [2]
Constellation:Cetus
Magnitude:0.15 (V) [1]
Angular diameter:7.3 arcsec[2]
Distance:0.92 AU
7.63 lightmin [2]
Angular motion (speed):1.21 deg/day[2]
Angular motion (pos ang):68.7°
Orbital elements [2]
Semi-major axis:0.39 AU
Eccentricity:0.205636
Inclination:7.00°
Longitude ascending node:48.33°
Argument of perihelion:29.13°
Epoch of elements:01 January 2000
Mean Anomaly at epoch:174.79°
Absolute mag (H):-0.65 [1]
Slope parameter (n):2.00 [1]
Derived quantities
Perihelion:0.31 AU
Aphelion:0.47 AU
Orbital period:0.24 years
Sources
[1] Robin M. Green, Spherical Astronomy, 1985, ISBN 0-521-31779-7
[2] Explanatory Supplement to the Astronomical Almanac, 2013, Urban & Seidelmann, Eds., Table 8.7, ISBN 978-1-891389-85-6
Visibility from Cambridge

All times shown in Cambridge local time.

Events
17 Apr 2025  –  Mercury at aphelion
19 Apr 2025  –  Mercury at highest altitude in morning sky
21 Apr 2025  –  Mercury at greatest elongation west
24 Apr 2025  –  Mercury at dichotomy
30 May 2025  –  Mercury at superior solar conjunction
31 May 2025  –  Mercury at perihelion
26 Jun 2025  –  Mercury at highest altitude in evening sky
28 Jun 2025  –  Mercury at dichotomy
Printable finder charts

Share

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

Color scheme