74 Geminorum information

74 Geminorum
	Location of 74 Geminorum in Gemini (circled)
Observation data; Epoch J2000 Equinox J2000
Constellation	Gemini
Right ascension	07h 39m 28.593s
Declination	+17° 40′ 28.28″
Apparent magnitude (V)	5.05
Characteristics
Evolutionary stage	K-type giant
Spectral type	K5.5III
Apparent magnitude (U)	8.53
Apparent magnitude (B)	6.61
Apparent magnitude (G)	4.348±0.003
Apparent magnitude (J)	2.11
Apparent magnitude (H)	1.32
Apparent magnitude (K)	1.14
B−V color index	1.616±0.007
Astrometry
Radial velocity (Rv)	25.38±0.19 km/s
Proper motion (μ)	RA: 5.374 mas/yr ; Dec.: -1.199 mas/yr
Parallax (π)	5.1083 ± 0.0964 mas
Distance	640 ± 10 ly ; (196 ± 4 pc)
Absolute magnitude (MV)	-1.01
Details
Radius	89.6 R☉
Luminosity	666 L☉
Temperature	3,933 K
Other designations
	f Gem, 74 Gem, BD+18 1701, Gaia DR2 671137503843195392, Gaia DR3 671137503843195392, HD 61338, HIP 37300, HR 2938, SAO 97120, PPM 124288, WDS J07395+1740AB, TIC 16134382, TYC 1365-2474-1, GSC 01365-02474, IRAS 07366+1747, 2MASS J07392860+1740282
Database references
SIMBAD	data

74 Geminorum (f Geminorum) is a K-type giant star in the constellation Gemini. It is located about 640 light-years from Earth based on its Gaia DR3 parallax. The star is often subject to lunar occultations, allowing an accurate measurement of its angular diameter.^[1] It has an apparent magnitude of 5.05, making it faintly visible to the naked eye.^[2]

^ ^a ^b Dyachenko, V.; Richichi, A.; Balega, Yu; Beskakotov, A.; Maksimov, A.; Mitrofanova, A.; Rastegaev, D. (2018-08-01). "Lunar occultation observations at the SAO RAS 6-m telescope". Monthly Notices of the Royal Astronomical Society. 478: 5683–5688. Bibcode:2018MNRAS.478.5683D. doi:10.1093/mnras/sty1427. ISSN 0035-8711.
^ ^a ^b ^c Cite error: The named reference :3 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference :0 was invoked but never defined (see the help page).
^ ^a ^b van Leeuwen, Floor (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. eISSN 1432-0746. ISSN 0004-6361. Hipparcos record for this source at VizieR.
^ Cite error: The named reference :5 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference :4 was invoked but never defined (see the help page).

Cite error: There are <ref group=lower-alpha> tags or {{efn}} templates on this page, but the references will not show without a {{reflist|group=lower-alpha}} template or {{notelist}} template (see the help page).

[:2-1] Dyachenko, V.; Richichi, A.; Balega, Yu; Beskakotov, A.; Maksimov, A.; Mitrofanova, A.; Rastegaev, D. (2018-08-01). "Lunar occultation observations at the SAO RAS 6-m telescope". Monthly Notices of the Royal Astronomical Society. 478: 5683–5688. Bibcode:2018MNRAS.478.5683D. doi:10.1093/mnras/sty1427. ISSN 0035-8711.

[:3-2] Cite error: The named reference :3 was invoked but never defined (see the help page).

[dr3-3] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[:0-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h Cite error: The named reference :0 was invoked but never defined (see the help page).

[:1-5] van Leeuwen, Floor (13 August 2007). "Validation of the new Hipparcos reduction". Astronomy & Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. eISSN 1432-0746. ISSN 0004-6361. Hipparcos record for this source at VizieR.

[:5-6] Cite error: The named reference :5 was invoked but never defined (see the help page).

[:4-8] Cite error: The named reference :4 was invoked but never defined (see the help page).

Observation data Epoch J2000 Equinox J2000
Location of 74 Geminorum in Gemini (circled)^[2]
Constellation	Gemini
Right ascension	07^h 39^m 28.593^s^[3]
Declination	+17° 40′ 28.28″^[3]
Apparent magnitude (V)	5.05^[4]
Characteristics
Evolutionary stage	K-type giant
Spectral type	K5.5III^[4]
Apparent magnitude (U)	8.53^[4]
Apparent magnitude (B)	6.61^[4]
Apparent magnitude (G)	4.348±0.003^[4]
Apparent magnitude (J)	2.11^[4]
Apparent magnitude (H)	1.32^[4]
Apparent magnitude (K)	1.14^[4]
B−V color index	1.616±0.007^[5]
Astrometry

Radial velocity (R_v)	25.38±0.19^[6] km/s
Proper motion (μ)	RA: 5.374 mas/yr^[3] Dec.: -1.199 mas/yr^[3]
Parallax (π)	5.1083 ± 0.0964 mas^[3]
Distance	640 ± 10 ly (196 ± 4 pc)
Absolute magnitude (M_V)	-1.01^[2]

Details

Radius	89.6^[a] `R`_☉
Luminosity	666^[7] `L`_☉
Temperature	3,933^[7] K

Other designations
f Gem, 74 Gem, BD+18 1701, Gaia DR2 671137503843195392, Gaia DR3 671137503843195392, HD 61338, HIP 37300, HR 2938, SAO 97120, PPM 124288, WDS J07395+1740AB, TIC 16134382, TYC 1365-2474-1, GSC 01365-02474, IRAS 07366+1747, 2MASS J07392860+1740282
Database references
SIMBAD	data

74 Geminorum information

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