Astronomy:NGC 1247
| NGC 1247 | |
|---|---|
 NGC 1247 (center) and Mrk 1071 (lower left) imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 03h 12m 14.2539s[1] |
| Declination | −10° 28′ 50.963″[1] |
| Redshift | 0.013166±0.0000140[1] |
| Helio radial velocity | 3,947±4 km/s[1] |
| Distance | 205.85 ± 7.89 Mly (63.113 ± 2.419 Mpc)[2] |
| Group or cluster | NGC 1241 group (LGG 84)[3] |
| Apparent magnitude (V) | 13.47[1] |
| Characteristics | |
| Type | Sbc edge-on[1] |
| Size | ~251,700 ly (77.17 kpc) (estimated)[1] |
| Apparent size (V) | 4.59′ × 0.58′[1] |
| Other designations | |
| IRAS 03098-1040, MCG-02-09-014, PGC 11931[1] | |
NGC 1247 is a large edge-on spiral galaxy in the constellation of Eridanus. Its velocity with respect to the cosmic microwave background is 3,774±13 km/s, which corresponds to a Hubble distance of 181.6 ± 12.7 Mly (55.67 ± 3.90 Mpc).[1] However, 16 non-redshift measurements give a farther mean distance of 205.85 ± 7.89 Mly (63.113 ± 2.419 Mpc).[2] It was discovered by German-British astronomer William Herschel on 10 December 1798.[4]
NGC 1247 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[5][6]
NGC 1241 group
NGC 1247 is a member of the NGC 1241 galaxy group (also known as LGG 84). The other four galaxies in the group are NGC 1241, NGC 1242 (fr), Mrk 1071 (d), and MCG-02-09-006 (d)[3][7]
Supernova
One supernova has been observed in NGC 1247:
- SN 2026xqu (Type Ia-pec, mag. 18.28) was discovered by GOTO on 6 August 2026.[8]
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Results for object NGC 1247". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+1247.
- ↑ 2.0 2.1 "Distance Results for NGC 1247". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+1247.
- ↑ 3.0 3.1 Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 1247". https://cseligman.com/text/atlas/ngc12.htm#1247.
- ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D. et al. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society 494 (2): 1784. doi:10.1093/mnras/staa766. Bibcode: 2020MNRAS.494.1784A.
- ↑ "NGC 1247". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1247.
- ↑ "LGG 84". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+84.
- ↑ "SN 2026xqu". IAU. https://www.wis-tns.org/object/2026xqu.
External links
- NGC 1247 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
03h 12m 14.2539s, −10° 28′ 50.963″
Template:NGC objects:1001-2000
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