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Nu1 Sagittarii information


Nu1 Sagittarii
Diagram showing star positions and boundaries of the Sagittarius constellation and its surroundings
Location of ν1 Sagittarii (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sagittarius
Right ascension 18h 54m 10.17695s[1]
Declination −22° 44′ 41.4247″[1]
Apparent magnitude (V) +4.86[2]
Characteristics
Spectral type G2/K1 Ib/II + B9.2p[3]
U−B color index +1.34[2]
B−V color index +1.43[2]
Astrometry
Radial velocity (Rv)−11.57[4] km/s
Proper motion (μ) RA: +4.291[4] mas/yr
Dec.: −7.786[4] mas/yr
Parallax (π)2.3170 ± 0.2139 mas[4]
Distance1,400 ± 100 ly
(430 ± 40 pc)
Absolute magnitude (MV)−3.91[5]
Details
Radius101[4] R
Luminosity3,464[4] L
Temperature4,401[4] K
Other designations
Ainalrami, ν1 Sgr, 32 Sgr, BD−22°4907, HD 174974, HIP 92761, HR 7116, SAO 187426, WDS J18542-2245[6]
Database references
SIMBADdata

Nu1 Sagittarii (ν1 Sagittarii, abbreviated Nu1 Sgr, ν1 Sgr) is a triple star system[7] about 1,100 light-years from Earth. Its three components are designated Nu1 Sagittarii A (officially named Ainalrami /ɛnəlˈrmi/, the traditional name for the system),[8] B and C.[9] A and B themselves form a spectroscopic binary.[7] The system is 0.11 degree north of the ecliptic.

  1. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Lutz1977 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference parsons1998 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference dr2 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Cardini2005 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  8. ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.
  9. ^ Cite error: The named reference WDS was invoked but never defined (see the help page).

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Nu1 Sagittarii

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Nu1 Sagittarii (ν1 Sagittarii, abbreviated Nu1 Sgr, ν1 Sgr) is a triple star system about 1,100 light-years from Earth. Its three components are designated...

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