1 exametre
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(Redirected from 1 E18 m)
This list includes distances between 1 and 10 exametres (1018 m). To help compare different distances this page lists lengths between 1018 m (1 Em or 110 light years) and 1019 m (1100 light years).
- 1.4 Em — 145 light years — Diameter of Messier Object 13 (a typical globular cluster)[citation needed]
- 1.6 Em — 172 ± 12.5 light years — Diameter of Omega Centauri (one of the largest known globular clusters, perhaps containing over a million stars)[1][2]
- 3.1 Em — 310 light years — Distance to Canopus according to Hipparcos[citation needed]
- 6.1 Em — 640 light years — Distance to Betelgeuse according to Hipparcos[3]
- 6.2 Em — 650 light years — Distance to the Helix Nebula, located in the constellation Aquarius[citation needed]
- 7.3 Em — 730 light years — Distance to Rigel according to Hipparcos[citation needed]
- 9 Em — 1000 light years — Diameter of the Tarantula Nebula[citation needed]
[edit] See also
| 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] Notes
- ^ distance × sin( diameter_angle ), using distance of 5kpc (15.8 ± 1.1 kly) and angle 36.3', = 172 ± 12.5 ly.
- ^ van de Ven, G.; van den Bosch, R. C. E.; Verolme, E. K.; de Zeeuw, P. T. (January II 2006). "The dynamical distance and intrinsic structure of the globular cluster ω Centauri". Astronomy and Astrophysics 445 (2): 513–543. Bibcode 2006A&A...445..513V. doi:10.1051/0004-6361:20053061. "best-fit dynamical distance D=4.8±0.3 kpc ... consistent with the canonical value 5.0±0.2 kpc obtained by photometric methods"
- ^ Harper, Graham M.; Brown, Alexander; Guinan, Edward F. (April 2008). "A New VLA-Hipparcos Distance to Betelgeuse and its Implications" (PDF). The Astronomical Journal 135 (4): 1430–40. Bibcode 2008AJ....135.1430H. doi:10.1088/0004-6256/135/4/1430. http://iopscience.iop.org/1538-3881/135/4/1430/pdf/aj_135_4_1430.pdf.
