The Earth
The Earth, as seen by the Apollo 17 astronauts. © NASA
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|
Name
The Earth
|
Object type
Earth
|
Current position
| Computed for: | 06 December 2025 |
| Right ascension: | 17h16m [2] |
| Declination: | −42°22' [2] |
| Constellation: | Unknown |
| Magnitude: | -25.42 (V) [1] |
| Angular diameter: | 648000.0 arcsec[2] |
| Angular motion (speed): | 0.0 mas/yr[2] |
| Angular motion (pos ang): | 0.0° |
Orbital elements [2]
| Semi-major axis: | 1.00 AU |
| Eccentricity: | 0.016711 |
| Inclination: | -0.00° |
| Longitude ascending node: | 0.00° |
| Argument of perihelion: | 102.94° |
| Epoch of elements: | 01 January 2000 |
| Mean Anomaly at epoch: | -2.47° |
| Absolute mag (H): | -3.80 [1] |
| Slope parameter (n): | 2.00 [1] |
Derived quantities
| Perihelion: | 0.98 AU |
| Aphelion: | 1.02 AU |
| Orbital period: | 1.00 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
| 03 Jan 2026 | – The Earth at perihelion |
| 06 Jul 2026 | – The Earth at aphelion |
| 02 Jan 2027 | – The Earth at perihelion |
| 05 Jul 2027 | – The Earth at aphelion |
| 05 Jan 2028 | – The Earth at perihelion |
| 03 Jul 2028 | – The Earth at aphelion |
| 02 Jan 2029 | – The Earth at perihelion |
| 06 Jul 2029 | – The Earth at aphelion |