Galaxy NGC 3310 (Arp 217)

NGC 3310 + SN 2021gmj
NGC 3310 + SN 2021gmj: Galaxy NGC 3310 with supernova SN2021gmj; 30" SlipStream-Dobson f/3.3; 20s bei ISO 25'600; Hasliberg; © 3. 4. 2021 Eduard von Bergen [29]

History

The galaxy NGC 3310 was discovered by William Herschel on 12 April 1789. It is a spiral galaxy of morphological type SA(rs)bc pec. In Halton Arp's 1966 «Atlas of Peculiar Galaxies», NGC 3310 is listed under the number Arp 217 as an example of a galaxy with an attached bow. The escape velocities measured since 2000 range from 952 km/s to 993 km/s and the distances determined from them range from 17 Mpc to 20 Mpc. [145, 196, 199]

On 20 March 2021, a type II supernova was discovered: SN2021gmj. It reached magnitude 15.1. See fig. 1. Previous known supernovae in this galaxy are: SN1991N, SN1974C. [303, 304]

Physical Properties

NGC 3310
NGC 3310: Section of the Sloan Digitized Sky Survey [147]

NGC 3310 is a well-studied starburst galaxy thought to have earlier merged with a companion. It shows various tidal formations surrounding the main disc and two large H-I tails extending north and south. [305] Observations with the Hubble Space Telescope showed a rotating disk of gas at its centre, suggesting a supermassive black hole of about 5 to 42 million times the mass of the Sun. [306]

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
Designation NGC 3310
Type Gx (SBbc/P)
Right Ascension (J2000.0) 10h 38m 45.6s
Declination (J2000.0) +53° 30' 12"
Diameter 3.1 × 2.4 arcmin
Photographic (blue) magnitude 11.2 mag
Visual magnitude 10.8 mag
Surface brightness 12.8 mag·arcmin-2
Position Angle 156°
Redshift (z) 0.003312
Distance derived from z 13.99 Mpc
Metric Distance 18.100 Mpc
Dreyer Description cB, pL, R, vg, vsmbMN 15"
Identification, Remarks WH IV 60; h 731; GC 2158; UGC 5786; MCG 9-18-8; CGCG 267-4; IRAS 10356+5345; VV 356; VV 406; PRC D-15; Arp 217

Finder Chart

NGC 3310 is located in the constellation Ursa Maior, about 10 arc minutes south of the 5.5 mag bright star HR 4156, which on a dark night still is visible to the eye. It is circumpolar and is highest in the sky at night from January to December.

Ursa Maior: Galaxy NGC 3310 (Arp 217)
Finder Chart Galaxy NGC 3310 (Arp 217)
21:15
21:19 | 83.3°
21:23
Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. Times are shown for timezone UTC, Latitude 46.7996°, Longitude 8.23225°, Horizon height 5°, Date 2025-04-03. [149, 160]

Visual Observation

762 mm aperture: Current supernova (SN2021gmj) in galaxy visually clear and well visible.

— 3. 4. 2021, Eduard von Bergen

Objects Within a Radius of 15°

References