Key facts
- Constellation
- Leo
- Right ascension
- 11 28 11.0446
- Declination
- +25 ° 39 ′ 39.943 ″
- Heliocentric radial velocity
- 2737 ± 1 km/s
- Distance
- 146.7 ± 10.3 Mly (44.97 ± 3.16 Mpc )
- Type
- SAB(rs)c
- Size
- ~69,100 ly (21.20 kpc ) (estimated)
- Apparent size v
- 1.7′ × 1.1′
via Wikipedia infobox
Wikidata facts
- Instance of
- spiral galaxy
- Constellation
- Leo
- Distance from Earth
- 48
- Image
- NGC3689 - SDSS DR14.jpg
Show 11 more facts
- catalog code
- Gaia DR2 3994295950075670144
- galaxy morphological type
- SABc
- discoverer or inventor
- William Herschel
- time of discovery or invention
- 1785-04-06
- apparent magnitude
- 11.727
- Commons category
- NGC 3689
- right ascension
- 172.04590744108070
- declination
- 25.66114113646650
- radial velocity
- 2737
- redshift
- 0.009136
- epoch
- J2000.0
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 3689 is an intermediate spiral galaxy in the constellation of Leo. Its velocity with respect to the cosmic microwave background is 3049 ± 22 km/s, which corresponds to a Hubble distance of 44.97 ± 3.16 Mpc (~147 million light-years). However, 16 non-redshift measurements give a closer distance of 39.350 ± 2.088 Mpc (~128 million light-years). The galaxy was discovered by German-British astronomer William Herschel on 6 April 1785.
NGC 3689 is a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.
Excerpted from Wikipedia’s “Q1105904” article, available under the CC BY-SA 4.0 licence.
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