Galaxy · Elliptical
NGC 3665
NGC 3665 is a galaxy in the direction of the constellation Ursa Major, 95.5 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Ursa Major |
| Distance | 95.5 million light-years (29.27 Mpc) |
| Diameter | 93,000 light-years · 1.1 × the Milky Way |
| Absolute magnitude | magnitude −21.46 |
| Apparent magnitude | magnitude 10.87 |
| Luminosity | 1.7 × the Milky Way |
| Right ascension (J2000) | 11h 24m 43.6s |
| Declination (J2000) | +38° 45′ 46″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.87. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 95 million years ago. At that time dinosaurs ruled the Earth. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1,693.5 billion years.