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Apparent magnitude (V) 6.4 [4] ... Messier 92 (also known as M92, M 92, or NGC 6341) is a globular cluster of stars in the northern constellation of Hercules.
The Messier objects are a set of 110 astronomical objects catalogued by the French ... Apparent magnitude Apparent dimensions ... 16 h 57 m 8.92 s: −04° 05′ 58. ...
For example, 3C 273 has an average apparent magnitude of 12.8 (when observing with a telescope), but an absolute magnitude of −26.7. If this object were 10 parsecs away from Earth it would appear nearly as bright in the sky as the Sun (apparent magnitude −26.744).
The eclipsing binary nature of the system was discovered in the TESS mission data of data sectors 24 and 25, recorded from April through June 2020. In addition to a transit signal with ~7.2-day period of transit depth δ = 0.049 66 ± 0.000 30, [5] the observed light curve also exhibited stellar flares and a ~13.1-day period brightness modulation which was identified with the rotation period ...
Winnecke 4 (also known as Messier 40 or WNC 4) is an optical double star consisting of two unrelated stars in a northerly zone of the sky, Ursa Major. The pair were discovered by Charles Messier in 1764 while he was searching for a nebula that had been reported in the area by Johannes Hevelius .
Messier 95, also known as M95 or NGC 3351, is a barred spiral galaxy about 33 million light-years away in the zodiac constellation Leo. It was discovered by Pierre Méchain in 1781, and catalogued by compatriot Charles Messier four days later.
50 ± 3 Mly (15.33 ± 0.92 Mpc) Apparent magnitude ... Messier 89 (M89 for short, also known as NGC 4552) is an elliptical galaxy in the constellation Virgo.
It was discovered on May 3, 1764, [10] and was the first Messier object to be discovered by Charles Messier himself. Messier originally mistook the object for a nebula without stars. This mistake was corrected after the stars were resolved by William Herschel around 1784. [11] Since then, it has become one of the best-studied globular clusters.