NGC 2090

NGC 2090 is a spiral galaxy located approximately 40 million light-years from the Solar System[2] in the Columba constellation. It was discovered on 29 October 1826 by Scottish astronomer James Dunlop.[4] NGC 2090 was studied to refine the Hubble constant to an accuracy within ±10%.[1]

NGC 2090
NGC 2090
Observation data (J2000 epoch)
ConstellationColumba
Right ascension 05h 48m 22.3s [1]
Declination−34° 13 37[1]
Distance (comoving)12.3 ± .9 Mpc (40.1 ± 2.9 Mly)h1
0.73
Distance40 Mly[2]
Apparent magnitude (B)30.76[1]
Characteristics
TypeSc II
References: [1][3]

See also

References

  1. "Cepheid Distance to NGC 2090". doi:10.1086/305766. Cite journal requires |journal= (help)
  2. An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
  3. "NGC 2090".
  4. "New General Catalog Objects: NGC 2050 - 2099". cseligman.com. Retrieved 2017-12-14.


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