NGC 1998

Galaxy in the constellation Pictor

NGC 1998
NGC 1998, top-right from it is NGC 1995
Observation data (J2000.0 epoch)
Constellation	Pictor
Right ascension	05^h 33^m 15.7^s^[1]
Declination	−48° 41′ 44″^[1]
Redshift	0.015137^[2]
Heliocentric radial velocity	4538^[2]
Distance	207 million
Apparent magnitude (V)	14.3^[3]
Apparent magnitude (B)	15.2^[3]
Characteristics
Type	SO
Size	0.90 x 0.5 arc minutes^[3]
Other designations
ESO 204-15, PGC 17434

NGC 1998 (also known as ESO 204-15, PGC 17434) is a lenticular galaxy located in the Pictor constellation. It was discovered by John Herschel on December 28, 1834^[4] and is about 207 million light-years from the Milky Way. Its apparent magnitude is 14.3.^[3] and its size is 0.90 by 0.5 arc minutes.^[3] In some sources such as SIMBAD, it is misidentified as nearby double star NGC 1995.^[2]

References

^ ^a ^b "NED results for object NGC 1998". NED. Retrieved 11 November 2017.
^ ^a ^b ^c "NGC 1995". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 November 2017.
^ ^a ^b ^c ^d ^e "Object: NGC 1998 (*)". SEDS. Retrieved 11 November 2017.
^ "Galaxy NGC 1998". cseligman. Retrieved 11 November 2017.

Constellation of Pictor

Stars

Bayer	α β γ δ ζ η¹ η² θ ι κ λ μ ν μ Dor
Variable	R S RR SW TU TV TW TX AB AE AK VZ
HR	1498 1667 1727 1742 1813 1856 1860 1912 1984 2008 2023 2032 2044 2049 2072 2089 2094 2114 2117 2138 2274 2336 2337 2345 2354 2360 2369 2389 2562
HD	37781 40307 41004 41248
Other	EBLM J0555-57 2MASS J05332802−4257205 NGC 1995 PSR J0437−4715 TOI-270 TOI-1338 WISE 0647−6232

Exoplanets	AB Pictoris b β Pictoris b c HD 40307 b c d e f g HR 2562 b LHS 1815 b TOI-1338 b c

Galaxies

NGC	1705 1803 1998
Other	Pictor A QSO J0529-4351

Category

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Astronomical catalog List of NGC objects

New General Catalogue 1500 to 1999