Where is it now
- Distance from Sun
- 1.001 AU
- True anomaly
- 266.61°
- As of
- 2 October 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 00h 00m 00s
- Declination
- +00° 00′ 00″
- Constellation
- Pisces
- Distance from Earth
- 0 AU
- Elongation from the Sun
- 0° — too close to the Sun to observe
Visible from both hemispheres.
From your location
See how high it is right now, whether it's up after dark, and when it rises and sets where you are.
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Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 1 AU
- Eccentricity
- 0.0167
- Inclination
- 0°
- Orbital period
- 365.3 days
- Perihelion
- 0.983 AU
- Aphelion
- 1.017 AU
- Longitude of ascending node
- 0°
- Argument of periapsis
- 102.94°
- Epoch · J2000
- J2000
Physical properties
- Mean radius
- 6,371 km
- Equatorial radius
- 6,378 km
- Polar radius
- 6,357 km
- Mass
- 5.972 × 10²⁴ kg
- Density
- 5.513 g/cm³
- Rotation period
- 23.93 hours
- Axial tilt
- 23.44°
- Surface gravity
- 9.82 m/s²
- Escape velocity
- 11.19 km/s
- GM
- 398,600 km³/s²
- Ellipticity
- 0.00335
- J₂ · × 10⁻⁶
- 1,082.63
- Moment of inertia · I/MR²
- 0.3308
- Length of day
- 24 hours
- Mean orbital speed
- 29.78 km/s
- Black-body temperature
- 254 K
- Solar irradiance
- 1,361 W/m²
Visual & observation
- Geometric albedo
- 0.434
- Bond albedo
- 0.294
- V(1,0) magnitude
- -3.99
- Representative colour
- #4F86C7
Atmosphere
- Surface pressure · 1014 mb
- 1.01 bar
- Temperature · 288 K (15 C)
- 288 K
- Density
- 1.217 kg/m³
- Scale height
- 8.50 km
- Mean molecular weight
- 28.97
- Winds
- 0 to 100 m/s
Composition by volume
- Nitrogen (N2) 78.08 %
- Oxygen (O2) 20.95 %
- Argon (Ar) 9,340 ppm
- Carbon Dioxide (CO2) 420 ppm
- Neon (Ne) 18 ppm
- Helium (He) 5 ppm
- CH 4 2 ppm
- Krypton (Kr) 1 ppm
Source: NASA Planetary Fact Sheet.
1 moons
| Moon | 1,737 km | 7.346 × 10²² kg | 3.34 g/cm³ | 0.0026 AU | 27.3 days |
Sources
- orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
- physical properties: NASA Planetary Fact Sheet
- visual properties: NASA Planetary Fact Sheet
- physical properties: NASA Planetary Fact Sheet
- visual properties: NASA Planetary Fact Sheet
- atmospheres: NASA Planetary Fact Sheet