NGC 3953 is a barred spiral galaxy located in the constellation Ursa Major. Its velocity with respect to the cosmic microwave background is 1,236±13 km/s, which corresponds to a Hubble distance of 59.4 ± 4.2 Mly (18.22 ± 1.29 Mpc).[1] However, 33 non-redshift measurements give a closer mean distance of 54.10 ± 1.93 Mly (16.588 ± 0.592 Mpc).[2] It was discovered by Pierre Méchain on 12 March 1781.[3][4][5]
| NGC 3953 | |
|---|---|
 NGC 3953 captured in 2026 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 53m 49.0283s[1] |
| Declination | +52° 19′ 36.480″[1] |
| Redshift | 0.003502±0.00000200[1] |
| Heliocentric radial velocity | 1,050±1 km/s[1] |
| Distance | 54.10 ± 1.93 Mly (16.588 ± 0.592 Mpc)[1] |
| Group or cluster | M109 Group |
| Apparent magnitude (V) | 10.8[1] |
| Characteristics | |
| Type | SB(r)bc[1] |
| Size | 131,200 ly (40.24 kpc) (estimated)[1] |
| Apparent size (V) | 6.9′ × 3.5′[1] |
| Other designations | |
| IRAS 11511+5236, 2MASX J11534902+5219355, UGC 6870, MCG +09-20-026, PGC 37306, CGCG 269-013[1] | |
NGC 3953 is known to exhibit an inner ring structure that encircles the bar. NGC 3953 is a member of the M109 Group, a large group of galaxies located within the constellation Ursa Major that may contain over 50 galaxies.[6][7][8][9]
Supernovae
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Two supernovae have been identified within NGC 3953:
References
edit- 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 3953". NASA/IPAC Extragalactic Database. Retrieved 2024-10-08.
- ↑ "Distance Results for NGC 3953". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 22 February 2026.
- ↑ Henk Bril (2006). "Fortin – Other weird findings: The truth about the identity of M109". www.astrobril.nl: Astrohistorica. Retrieved 14 April 2025.
- ↑ Hartmut Frommert (2014). "Messier 109 and Messier 109B". SEDS Messier Catalog. Retrieved 14 April 2025.
- ↑ "NGC 3953 im Großen Bären (Ursa Major)". Spektrum der Wissenschaft (in German). 2024.
- ↑ R. B. Tully (1988). Nearby Galaxies Catalog. Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
- ↑ P. Fouque; E. Gourgoulhon; P. Chamaraux; G. Paturel (1992). "Groups of galaxies within 80 Mpc. II – The catalogue of groups and group members". Astronomy and Astrophysics Supplement. 93: 211–233. Bibcode:1992A&AS...93..211F.
- ↑ A. Garcia (1993). "General study of group membership. II – Determination of nearby groups". Astronomy and Astrophysics Supplement. 100: 47–90. Bibcode:1993A&AS..100...47G.
- ↑ G. Giuricin; C. Marinoni; L. Ceriani; A. Pisani (2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. S2CID 9618325.
- ↑ Migliardi, M.; Dal Farra, E.; Kato, T.; Sano, Y. (2001). "Supernova 2001dp in NGC 3953". International Astronomical Union Circular (7683): 1. Bibcode:2001IAUC.7683....1M.
- ↑ "SN 2001dp". Transient Name Server. IAU. Retrieved 22 February 2026.
- ↑ "Results for object SN 2001dp". NASA/IPAC Extragalactic Database. Retrieved 2024-10-08.
- ↑ Nakano, S.; Itagaki, K. (2006). "Supernova 2006bp in NGC 3953". International Astronomical Union Circular (8700): 4. Bibcode:2006IAUC.8700....4N.
- ↑ "SN 2006bp". Transient Name Server. IAU. Retrieved 22 February 2026.
- ↑ "Results for object SN 2006bp". NASA/IPAC Extragalactic Database. Retrieved 2024-10-08.
External links
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