Nu1 Sagittarii information

Nu¹ Sagittarii
	Location of ν1 Sagittarii (circled)
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Sagittarius
Right ascension	18h 54m 10.17695s
Declination	−22° 44′ 41.4247″
Apparent magnitude (V)	+4.86
Characteristics
Spectral type	G2/K1 Ib/II + B9.2p
U−B color index	+1.34
B−V color index	+1.43
Astrometry
Radial velocity (Rv)	−11.57 km/s
Proper motion (μ)	RA: +4.291 mas/yr ; Dec.: −7.786 mas/yr
Parallax (π)	2.3170 ± 0.2139 mas
Distance	1,400 ± 100 ly ; (430 ± 40 pc)
Absolute magnitude (MV)	−3.91
Details
Radius	101 R☉
Luminosity	3,464 L☉
Temperature	4,401 K
Other designations
	Ainalrami, ν1 Sgr, 32 Sgr, BD−22°4907, HD 174974, HIP 92761, HR 7116, SAO 187426, WDS J18542-2245
Database references
SIMBAD	data

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 /ɛnəlˈreɪmi/, 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.

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

[vanLeeuwen2007-1] Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).

[Lutz1977-2] Cite error: The named reference Lutz1977 was invoked but never defined (see the help page).

[parsons1998-3] Cite error: The named reference parsons1998 was invoked but never defined (see the help page).

[dr2-4] ^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference dr2 was invoked but never defined (see the help page).

[Cardini2005-5] Cite error: The named reference Cardini2005 was invoked but never defined (see the help page).

[SIMBAD-6] Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

[Eggleton2008-7] Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).

[IAU-LSN-8] "Naming Stars". IAU.org. Retrieved 16 December 2017.

[WDS-9] Cite error: The named reference WDS was invoked but never defined (see the help page).

Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Location of ν¹ Sagittarii (circled)
Constellation	Sagittarius
Right ascension	18^h 54^m 10.17695^s^[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 (R_v)	−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]
Distance	1,400 ± 100 ly (430 ± 40 pc)
Absolute magnitude (M_V)	−3.91^[5]

Details

Radius	101^[4] `R`_☉
Luminosity	3,464^[4] `L`_☉
Temperature	4,401^[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
SIMBAD	data