- R100 minutes (20 frames)
- G80 minutes (16 frames)
- L90 minutes (18 frames)
- B70 minutes (14 frames)
NGC 2146 is a galaxy in the constellation Camelopardalis, located at a distance of about 90 million light-years from the Sun.
NGC 2146 is a barred spiral galaxy. Its diameter is approximately 80 thousand light-years. A characteristic feature of the galaxy is the dense layers of dust of the spiral arm that crosses its core. Scientists assume that about 800 million years ago NGC 2146 collided with a smaller galaxy, resulting in bursts of star formation.
Supernovae
Three supernovae have been detected in NGC 2146:
- SN 2005V (type Ib/c, mag. 16), discovered by LIRIS on January 30, 2005.
- SN 2018zd (type II, mag. 17.8) — possibly type IIn, and may be the first electron capture supernova. Discovered on March 2, 2018 by Kyoichi Itagaki.
- SN 2024abfl (type II, mag. 17.5) — discovered on November 15, 2024 by Kyoichi Itagaki.
NGC 2146 (also known as the Dusty Hand Galaxy) is a SB(s)ab pec galaxy in the constellation Camelopardalis. The galaxy was discovered in 1876 by Friedrich August Theodor Wienecke.
Its diameter is 80,000 light-years. The galaxy's most notable feature is the dusty lanes of a spiral arm that crosses its core. This arm was bent by 45 degrees after a close encounter with a smaller galaxy, possibly NGC 2146a, about 0.8 billion years ago. This collision resulted in a relatively high rate of star formation, leading NGC 2146 to be considered a starburst galaxy.
Gravitational Influences
NGC 2146 is classified as a barred spiral galaxy due to its shape, but its most striking feature is the spiral arm that appears directly in front of the galaxy's core as we see it. The forces required to stretch this structure out and bend it by 45 degrees are enormous. The most likely explanation for this is that a nearby galaxy is exerting a gravitational influence and distorting the orbits of many of the stars in NGC 2146. We are likely now witnessing the final stages of a process that has been going on for tens of millions of years.
NGC 2146 is undergoing intense bursts of star formation, making it an example of a starburst galaxy. This is a typical condition for barred spiral galaxies, but the additional gravitational disturbance that NGC 2146 is subjected to clearly makes things worse, squeezing the hydrogen nebulae and causing stars to form.
| Photo | Date | Frames | Exposure | L | R | G | B |
|---|---|---|---|---|---|---|---|
 | 18 Mar 2021 | 68 | 05:40 | 01:30 | 01:40 | 01:20 | 01:10 |
Visibility chart of Galaxy NGC 2146 during the day
| Date | Moon Phase | Exposure | CCD Temperature | Gain | Offset | Filter |
|---|---|---|---|---|---|---|
- 2023ixf•
- 40 Eri•
- Abell 74•
- Artemis A868 SA•
- a Canis Minoris•
- C 2020 R4 ATLAS•
- C 2020 T2 Palomar•
- C 2021 S3 (PANSTARRS)•
- Haumea (2003 EL61)•
- HCG 68•
- HCG 92•
- IC 1318B•
- IC 1396•
- IC 1795•
- IC 1805•
- IC 1848•
- IC 1871•
- IC 3322A•
- IC 342•
- IC 4015•
- IC 405•
- IC 417•
- IC 434•
- IC 443•
- IC 4703•
- IC 5070•
- IC 5146•
- IC 63•
- M 1•
- M 101•
- M 103•
- M 109•
- M 13•
- M 15•
- M 27•
- M 3•
- M 33•
- M 42•
- M 45•
- M 5•
- M 51•
- M 57•
- M 63•
- M 64•
- M 74•
- M 76•
- M 81•
- M 82•
- M 86•
- M 87•
- M 94•
- M 97•
- NGC 147•
- NGC 1491•
- NGC 1499•
- NGC 1579•
- NGC 1961•
- NGC 2146•
- NGC 2239•
- NGC 2403•
- NGC 281•
- NGC 4236•
- NGC 4565•
- NGC 4631•
- NGC 507•
- NGC 508•
- NGC 5866•
- NGC 5907•
- NGC 6503•
- NGC 6823•
- NGC 6888•
- NGC 6946•
- NGC 6992•
- NGC 6995•
- NGC 7000•
- NGC 7023•
- NGC 7129•
- NGC 7217•
- NGC 7331•
- NGC 7380•
- NGC 7538•
- NGC 7635•
- NGC 7640•
- NGC 7822•
- NGC 891•
- NGC 896•
- NGC 925•
- PGC 54559•
- Sh2-155•
- Sh2-168•
- Sh2 103•
- Sh2 109•
- Sh2 132•
- T CrB•
- UGC 6930•
- V1405 Cas•
- Vesta A807 FA•