1 exametre
Lengths with order of magnitude 1e18m: thousand light year radius circle with yellow arrow and 100 light year circle at right with globular cluster Messier 5 within and Carina Nebula in front; globular cluster Omega Centauri to left of both; part of the 1400 light year wide Tarantula Nebula fills the background.
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 105.7 light years) and 1019 m (1057 light years).
Distances shorter than 1 Em
- 1.4 Em — 145 light years — Diameter of Messier Object 13 (a typical globular cluster)
- 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
- 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
- 7.3 Em — 730 light years — Distance to Rigel according to Hipparcos
- 9 Em — 1000 light years — Diameter of the Tarantula Nebula
Distances longer than 10 Em
See also
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 11, 2006). "The dynamical distance and intrinsic structure of the globular cluster ω Centauri". Astronomy and Astrophysics 445 (2): 513–543. arXiv:astro-ph/0509228. 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.
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