Galaxy · Spiral
NGC 4651
NGC 4651 is a galaxy in the direction of the constellation Coma Berenices, 57.2 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Coma Berenices |
| Distance | 57.2 million light-years (17.53 Mpc) |
| Diameter | 53,300 light-years · 0.61 × the Milky Way |
| Absolute magnitude | magnitude −20.30 |
| Apparent magnitude | magnitude 10.92 |
| Luminosity | 0.58 × the Milky Way |
| Right ascension (J2000) | 12h 43m 42.6s |
| Declination (J2000) | +16° 23′ 36″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.92. Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° 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 57 million years ago. At that time the dinosaurs were gone and mammals were diversifying; there was no human lineage yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1,014.2 billion years.