Wikipedia

NGC 7816

NGC 7816 is a spiral galaxy located about 215 million light-years away[2] in the constellation of Pisces.[3] It was discovered by astronomer William Herschel on September 26, 1785.[4]

NGC 7816
SDSS image of NGC 7816
Observation data (J2000 epoch)
ConstellationPisces
Right ascension00h 03m 48.8s[1]
Declination07° 28′ 43″[1]
Redshift0.017480/5240 km/s[1]
Distance217,249,200 ly
Apparent magnitude (V)13.61 [1]
Characteristics
TypeSbc [1]
Size~ 65,468.34 ly
Apparent size (V)1.7 x 1.5[1]
Other designations
CGCG 408-18, IRAS 00012+0712, MCG+1-1-18, PGC 263, UGC 16[1]

One supernovae has been observed in NGC 7816: SN 2017gww (Type II, mag. 17.9) was discovered by Kōichi Itagaki on September 26, 2017.[5]

Pair with NGC 7818

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NGC 7816 is listed as being in pair with the galaxy NGC 7818.[4][6] NGC 7818 is also listed as being a disturbed member of the pair.[4][7] However, due to the large difference in their recessional velocities, the two galaxies are not a true pair but an optical double.[4]

See also

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References

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  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 7816. Retrieved 2017-08-10.
  2. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-08-11.
  3. ↑ Rojas, Sebastián García. "Galaxy NGC 7816 – Galaxy in Pisces Constellation · Deep Sky Objects Browser". DSO Browser. Retrieved 2017-08-11.
  4. 1 2 3 4 "New General Catalog Objects: NGC 7800 – 7840". cseligman.com. Retrieved 2017-08-11.
  5. ↑ "SN 2017gww". Transient Name Server. IAU. Retrieved 15 November 2025.
  6. ↑ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-08-11.
  7. ↑ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-08-11.
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