1 exametre

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).

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

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.


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

1 exametre

See also

Notes