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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 62° by 10:48 and set at 17:18. Throughout the night, from 21:28 to 03:46, it will be below the horizon. Mercury will rise again after sunrise, at 04:23.
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 08

Mercury Rise and Set Timetable

TimeElevation
Mercury transit10:4862°
Mercury set17:18
Moon Rise, 99.8% illuminated17:33-3°
Astrosession begin18:56-18°
Astrosession end03:14-13°
Mercury rise04:23
Sunrise04:454°
Moon Set05:4616°

Track Mercury Position Throughout the Night

← Mon, 8 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 Leo, at right ascension 10h 52m 45s" and declination 09° 04' 42s, approximately 1.34 AU (200,461,147 km) from Earth. At the current time, it is below the horizon and not visible from your location.

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, 8 September 2025
Distance from Earth to Mercury1.3333 AU (199,458,841km)
Elongation5°
Angular diameter5"
Magnitude-1.6
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 coordinates10.87941, 9.07858
Center coordinates10.87941, 9.07858

Mercury Passage Through Night

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Current position of Mercury

Time21:28
Latitude37.3541
Longitude-121.955
Mercury elevation-40°
Mercury Azimuth27°
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
DateTue, 9 September 2025
Twighlight start18:54
Twighlight end03:13
Twighlight duration8h 19m
Rise04:28
Set17:18
Elevation at transit61°
Transit time10:53
Equatorial coordinatesRA: 10h 58m 01s", Dec: 08° 31' 53s
Magnitude-2
ConstellationLeo
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 Ascension10.87941°
Declination9.07858°
Magnitude-1.6
ConstellationLeo
Elevation-39.7°
Azimuth26.8°

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.