NGC 5273 | |
---|---|
Observation data (J2000 epoch) | |
Right ascension | 13h 42m 08.380s [1] |
Declination | +35° 39′ 15.47″ [1] |
Redshift | 0.00362 [2] |
Distance | 54.1 ± 6.8 Mly (16.6 ± 2.1 Mpc) [3] [4] |
Apparent magnitude (V) | 11.6
[5] 13.12 [6] |
Apparent magnitude (B) | 14.01 [6] |
Characteristics | |
Type | SA0(s) [4] |
Apparent size (V) | 2.8′ × 2.4′ [5] |
Other designations | |
NGC 5273, UGC 8675, PGC 48521 [7] |
NGC 5273 is a lenticular galaxy located 54 million light-years [4] away in the northern constellation of Canes Venatici. This galaxy was discovered by William Herschel on May 1, 1785. [8] It is positioned 1+1⁄4° to the southeast of the star 25 Canum Venaticorum. [5]
The morphological classification of this galaxy is SA0(s), [4] indicating it is lenticular in form. It displays a faint, unbarred spiral structure within a generally elliptical profile. [9] NGC 5273 is classified as a type 1.5 Seyfert galaxy, with the X-ray emission from its active galactic nucleus undergoing significant absorption. [10] However, data collected between the year 2000 and 2022 suggest this is a changing–look Seyfert, with the type ranging from 1 to 1.8/1.9. [11] The activity level shows strong variability, allowing reverberation mapping of the supermassive black hole at the core. This object has an estimated mass of (4.7±1.6)×106 M☉. [9]
NGC 5273 | |
---|---|
Observation data (J2000 epoch) | |
Right ascension | 13h 42m 08.380s [1] |
Declination | +35° 39′ 15.47″ [1] |
Redshift | 0.00362 [2] |
Distance | 54.1 ± 6.8 Mly (16.6 ± 2.1 Mpc) [3] [4] |
Apparent magnitude (V) | 11.6
[5] 13.12 [6] |
Apparent magnitude (B) | 14.01 [6] |
Characteristics | |
Type | SA0(s) [4] |
Apparent size (V) | 2.8′ × 2.4′ [5] |
Other designations | |
NGC 5273, UGC 8675, PGC 48521 [7] |
NGC 5273 is a lenticular galaxy located 54 million light-years [4] away in the northern constellation of Canes Venatici. This galaxy was discovered by William Herschel on May 1, 1785. [8] It is positioned 1+1⁄4° to the southeast of the star 25 Canum Venaticorum. [5]
The morphological classification of this galaxy is SA0(s), [4] indicating it is lenticular in form. It displays a faint, unbarred spiral structure within a generally elliptical profile. [9] NGC 5273 is classified as a type 1.5 Seyfert galaxy, with the X-ray emission from its active galactic nucleus undergoing significant absorption. [10] However, data collected between the year 2000 and 2022 suggest this is a changing–look Seyfert, with the type ranging from 1 to 1.8/1.9. [11] The activity level shows strong variability, allowing reverberation mapping of the supermassive black hole at the core. This object has an estimated mass of (4.7±1.6)×106 M☉. [9]