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Observation Settings

Or select it on the map:
This Earth map fragment is intended to illustrate celestial motion across the sky, emphasizing both bearing and elevational perspectives. The map's center point corresponds to the transit, showcasing celestial objects at their highest point, while elevation gradually decreases towards the map edges. This dynamic representation offers insights into the changing positions of celestial bodies with a focus on their bearing and elevational trajectories.
Your location: Santa Clara, United States
Timezone:
Latitude:
37.3541
Longitude:
-121.955

Mercury Observation Details

Mercury

Mercury Daily Motion

Mercury will not be observable tonight. It will reach its transit at 46° by 11:42 and set at 17:20. Throughout the night, from 17:51 to 04:05, it will be below the horizon. Mercury will rise again after sunrise, at 06:06.
Mercury will become visible in November, 26. After being too close to the Sun to observe, it will reappear in the night sky. Starting from November, 26, Mercury can be seen again, providing a good opportunity for observation.

Mercury Visibility Timetable on September 29

Mercury Rise and Set Timetable

TimeElevation
Mercury transit11:4246°
Moon Rise, 39.3% illuminated11:4446°
Sunset16:535°
Civil sunset17:200°
Mercury set17:20
Astrosession begin18:21-12°
Moon Set20:46-40°
Astrosession end03:35-30°
Mercury rise06:06

Track Mercury Position Throughout the Night

← Mon, 29 September 2025 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe Mercury changing position in the night sky.

Where is Mercury right now?

Mercury is located in the constellation Virgo, at right ascension 13h 05m 29s" and declination -6° 48' 08s, approximately 1.38 AU (206,445,062 km) from Earth. Although it is currently above the horizon at an altitude of 44 degrees, Mercury is not visible because it is daytime.

Upcoming Events

TimeDescriptionConstellation
Thu, 30 October 2025Greatest Elongation of MercuryScorpius
Sun, 9 November 2025Retrograde motion of Mercury beginsScorpius
Sat, 29 November 2025Retrograde motion of Mercury endsLibra
Mon, 8 December 2025Greatest Elongation of MercuryLibra

Current position of Mercury in Solar System

Earth Mercury
DateMon, 29 September 2025
Distance from Earth to Mercury1.3788 AU (206,265,544km)
Elongation12°
Angular diameter4.9"
Magnitude-0.6
This section provides an interactive projection of the solar system, illustrating the relative positions of Mercury, Earth, and the Sun throughout the year. By sliding the image left or right, you can change the day of the year, observing how the positions of Mercury and Earth shift in their orbits around the Sun.

Finder Chart for Mercury

Double-click to unlock the map.
Object nameMercury
Field of view
Limiting magnitude
Mercury coordinates13.09151, -6.80242
Center coordinates13.09151, -6.80242

Mercury Passage Through Night

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Current position of Mercury

Time10:42
Latitude37.3541
Longitude-121.955
Mercury elevation44°
Mercury Azimuth-159°
Here you can see the current position of the Mercury on the map, as well as its positions for rise and set. This tool allows you to track the Mercury's movement throughout the night, providing you with accurate and up-to-date information.

Annual motion of Mercury

Time
DateMon, 29 September 2025
Twighlight start18:17
Twighlight end03:28
Twighlight duration9h 11m
Rise06:01
Set17:16
Elevation at transit46°
Transit time11:38
Equatorial coordinatesRA: 13h 06m 32s", Dec: -6° 55' 56s
Magnitude-1
ConstellationVirgo
The graph illustrates the annual visibility pattern of a Mercury, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the Mercury is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.

Astrometric & Physical Parameters of Mercury

Coordinates & Visibility

Right Ascension13.09151°
Declination-6.80242°
Magnitude-0.6
ConstellationVirgo
Elevation43.7°
Azimuth-159.3°

Basic Properties

Mass, kg3.302E+23
Mean density, g/cm³5.427

Rotation

Sidereal rotation period, days58.6463 d
Mean solar day, hours175.9421 d

Surface & Atmosphere

Surface gravity, m/s²3.701
Escape velocity, km/s4.435
Mean temperature, K440

Brightness

Visual magnitude V(1,0)-0.42

Data Acknowledgment

Our solar system data—including planetary physical and orbital parameters—comes from the Solar System OpenData API , maintained by Le Système Solaire. We thank Christophe and the contributors for making this open data available.