10 gigametres
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To help compare different distances this page lists lengths starting at 1010 metres (10 gigametres (Gm) or 10 million kilometres, or 0.07 Astronomical units).
Distances shorter than 1010 metres
- 15 Gm — Closest distance of Comet Hyakutake from Earth
- 18 Gm — One light-minute (see yellow sphere in right-hand diagram)
- 24 Gm — Radius of a heliostationary orbit
- 46 Gm — Perihelion distance of Mercury (yellow ellipse on the right)
- 55 Gm — 60,000-year perigee of Mars (last achieved on August 27, 2003)
- 58 Gm — Average passing distance between Earth and Mars at the moment they overtake each other in their orbits
- 61 Gm[1][2] — Diameter of Aldebaran, an orange giant star (large star on right)
- 70 Gm — Aphelion distance of Mercury
- 76 Gm — Neso's apocentric distance; greatest distance of a natural satellite from its parent planet (Neptune)
- 86 Gm[3][clarification needed] — Diameter of Rigel, a blue supergiant star (largest star on right)
Distances longer than 1011 metres
[edit] See also
Click on the thumbnail image to jump to the desired order of length magnitude: top-left is 1e6m, lower-right is 1e17m. (Image description)
| Orders of magnitude for length in E notation | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| shorter than one metre: | |||||||||||||||||||||||||
| <−24 | −24 | −23 | −22 | −21 | −20 | −19 | −18 | −17 | −16 | −15 | −14 | −13 | −12 | −11 | −10 | −9 | −8 | −7 | −6 | −5 | −4 | −3 | −2 | −1 | 0 |
| longer than 1 metre: | |||||||||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
[edit] References
- ^ Richichi, A.; Roccatagliata, V. Aldebaran's angular diameter: How well do we know it?. Astronomy and Astrophysics, Volume 433, Issue 1, April I 2005, pp.305-312. "We derive an average value of 19.96±0.03 milliarcsec for the uniform disk diameter. The corresponding limb-darkened value is 20.58±0.03 milliarcsec, or 44.2±0.9 Rȯ."
- ^ Richichi, A. and Roccatagliata, V. derived an angular diameter of 20.58±0.03 milliarcsec, which given a distance of 65 light years yields a diameter of 61 million km
- ^ "Big and Giant Stars: Rigel". Internetservice Kummer + Oster GbR. Archived from the original on 26 December 2008. http://web.archive.org/web/20081226185717/http://jumk.de/astronomie/big-stars/rigel.shtml. Retrieved 2008-11-26. "Diameter: 62 * Sun"
