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NGC 5940
Observation data (J2000 epoch)
Constellation	Serpens
Right ascension	15h 31m 18.070s
Declination	+07d 27m 27.91s
Redshift	0.03405
Heliocentric radial velocity	10,209 km/s
Distance	500 Mly (153.3 Mpc)
Apparent magnitude (V)	15.56
Characteristics
Type	Seyfert galaxy
Size	140,000 ly
Other designations
PGC 55295, IRAS F15288+0737, UGC 9876, LEDA 55295, MRK 1511, MRK 9030, MCG +01-39-025

NGC 5940 is a barred spiral galaxy located in the Serpens constellation. The galaxy was found on April 19, 1887, by Lewis Swift, an American astronomer. NGC 5940 is located 500 million light-years away from the Milky Way and it is approximately 140,000 light-years across in diameter.

NGC 5940 is a Seyfert type 1 galaxy and is considered a quasar according to the SIMBAD database. It is registered under the Markarian Catalogue as Markarian 1511 or MRK 9030. It has an bright active core, meaning there is a presence of an acceleration disc around its huge black hole. This in turn, emits strong radiation and ultraviolet rays that later get ejected into the depths of space.

References

1. "NGC 5940 - Spiral Galaxy in | TheSkyLive.com". theskylive.com. Retrieved 2024-04-16.
2. ^ "New General Catalog Objects: NGC 5900 - 5949". cseligman.com. Retrieved 2024-04-16.
3. ^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-04-16.
4. Adegoke, Oluwashina K. (May 2022). "XMM-Newton and Swift Observations of the Seyfert 1 AGN NGC 5940". Astrophysics and Space Science. 367 (5): 51. arXiv:2205.11612. Bibcode:2022Ap&SS.367...51A. doi:10.1007/s10509-022-04082-1. ISSN 0004-640X.
5. "NGC 5940". simbad.u-strasbg.fr. Retrieved 2024-04-16.
6. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-16.

v t e Constellation of Serpens
List of stars in Serpens Serpens in Chinese astronomy
Stars	Bayer α (Unukalhai) β (Chow) γ (Ainalhai) δ ε ζ η θ (Alya) ι κ (Gudja) λ μ ν ξ ο π ρ σ τ τ τ τ τ τ τ τ υ φ χ ψ ω Flamsteed 3 4 5 6 7 8 10 11 (A) 14 16 25 (A) 29 36 (b) 39 40 43 45 46 47 59 (d) 60 (c) 61 64 3 Her Variable R W X RT UZ VV VY WX AA AN AO AP AR AU BQ CT CV CW EG FH FI FK FL FQ FR LV LW LX MR MS MT MV MY NN NO NQ NW OO OU PS QV QX QY V382 V411 HR 5665 5690 5692 5706 5711 5740 5745 5783 5796 5831 5850 5859 5861 5874 5909 5913 5931 5992 6005 6011 6014 6016 6449 6496 6544 6562 6568 6600 6620 6666 6681 6755 6756 6757 6785 6830 6840 6843 6858 6890 6898 6928 6993 (e) 6999 7008 7048 7076 7144 HD 135061 135615 136027 136118 138085 142245 143436 145936 146740 157969 168112 168443 168746 (Alasia) 175541 (Kaveh) Other ADS 9544 AS 296 9 11 22 23 27 Gliese 701 Gliese 710 GJ 1224 GX 17+2 IRAS 18418-0440 MWC 297 MWC 922 PG 1510+234 PG 1605+072 PSR B1534+11 PSR J1719−1438 Ross 508 Serpens FIRS 1 Serpens SVS 20 Serpens X-1 W40 IRS 1A South
Exoplanets CoRoT-9b CoRoT-11b CoRoT-22b CoRoT-23b CoRoT-27b HD 168746 b (Onasilos) HD 175541 b (Kavian) ω Serpentis b
Star clusters	NGC NGC 6535 NGC 6539 NGC 6604 NGC 6605 Other IC 4756 Messier 5 Messier 16 Serpens OB2 Serpens South Palomar 5
Nebulae	Other Abell 41 Eagle Nebula L134 L183 L483 Serpens cloud Sh2-54 Westerhout 40 Red Square Nebula S68
Galaxies	NGC 5887 5910 5911 5913 5919 5920 5921 5926 5928 5931 5936 5937 5940 5942 5941 5944 5951 5953 5954 5952 5956 5955 5957 5960 5962 5964 5970 5972 5975 5977 5980 5983 5984 5988 5991 5990 5994 5996 5997 6003 6004 6008 6006 6007 6009 6012 6010 6014 6020 6017 6018 6021 6022 6023 6027 6027a 6027b 6027c 6027d 6027e 6029 6033 6037 6036 6051 6063 6065 6066 6070 6080 6100 6118 6172 Other 317 318 321 323.1 324 326 Arp 72 Arp 220 4C 11.50 CGCG 049-033 Hoag's Object IC 4537 IC 4588 IRAS 15107+0724 NRAO 530 PDS 456 PG 1553+113 PGC 54493 PKS 1546+027
Galaxy clusters Abell 2040 Abell 2052 Abell 2063 Abell 2107 AWM 4 MKW 3s Seyfert's Sextet
Astronomical events GRB 970111 GRB 050813 GRB 060418 GRB 060526 SN 2004dk
Category

• Barred spiral galaxies
• Seyfert galaxies
• Serpens
• NGC objects
• UGC objects
• Markarian galaxies
• Principal Galaxies Catalogue objects
• LEDA objects
• MCG objects
• Discoveries by Lewis Swift
• Astronomical objects discovered in 1887