Ross 508 information

Ross 508
Observation data; Epoch J2000 Equinox J2000
Constellation	Serpens
Right ascension	15h 23m 51.13709s
Declination	+17° 27′ 57.4439″
Apparent magnitude (V)	14.18±0.20
Characteristics
Evolutionary stage	Main sequence
Spectral type	M4.5
Apparent magnitude (V)	14.18±0.20
Apparent magnitude (G)	12.195±0.003
Apparent magnitude (J)	9.105±0.024
Apparent magnitude (H)	8.620±0.032
Apparent magnitude (K)	8.279±0.023
Astrometry
Radial velocity (Rv)	42.14±0.39 km/s
Proper motion (μ)	RA: −391.919±0.034 mas/yr ; Dec.: −1259.296±0.034 mas/yr
Parallax (π)	89.1284 ± 0.0331 mas
Distance	36.59 ± 0.01 ly ; (11.220 ± 0.004 pc)
Details
Mass	0.1774±0.0045 M☉
Radius	0.2113±0.0063 R☉
Luminosity (bolometric)	0.003589+0.000067; −0.000071 L☉
Surface gravity (log g)	5.039±0.027 cgs
Temperature	3071+34; −22 K
Metallicity [Fe/H]	−0.20±0.20 dex
Other designations
	GJ 585, Ci 20 930, G 137-2, G 136-103, LFT 1203, LHS 396, LSPM J1523+1727, LTT 14584, NLTT 40124, PLX 3481, PM 15216+1739, PM J15238+1727, Ross 508, TIC 400019820, 2MASS J15235112+1727569
Database references
SIMBAD	data

Ross 508 is a 13th magnitude red dwarf star, 11.2183 parsecs away. The Ross catalog is named after Frank Elmore Ross who published a first list of 86 high proper motion stars in 1925.^[6] In 2022 it was discovered to have a super-Earth, Ross 508 b, orbiting every 10.77 days, detected by doppler spectroscopy.^[4]

The Ross 508 planetary system^[4]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	≥4.00+0.53 −0.55 $M$ _🜨	0.05366+0.00056 −0.00049	10.77±0.01	0.33+0.13 −0.15	—	—

^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference NASAExoplanetArchive was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Harakawa2022 was invoked but never defined (see the help page).
^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ Ross, Frank E. (November 1, 1925). "New proper-motion stars, (first list)". The Astronomical Journal. 36: 96–99. Bibcode:1925AJ.....36...96R. doi:10.1086/104687.

[1] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.

[GaiaDR3-2] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).

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

[Harakawa2022-4] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Harakawa2022 was invoked but never defined (see the help page).

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

[6] Ross, Frank E. (November 1, 1925). "New proper-motion stars, (first list)". The Astronomical Journal. 36: 96–99. Bibcode:1925AJ.....36...96R. doi:10.1086/104687.

Observation data Epoch J2000 Equinox J2000
Constellation	Serpens^[1]
Right ascension	15^h 23^m 51.13709^s^[2]
Declination	+17° 27′ 57.4439″^[2]
Apparent magnitude (V)	14.18±0.20^[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M4.5^[4]
Apparent magnitude (V)	14.18±0.20^[3]
Apparent magnitude (G)	12.195±0.003^[2]
Apparent magnitude (J)	9.105±0.024^[4]
Apparent magnitude (H)	8.620±0.032^[3]
Apparent magnitude (K)	8.279±0.023^[4]
Astrometry

Radial velocity (R_v)	42.14±0.39^[2] km/s
Proper motion (μ)	RA: −391.919±0.034 mas/yr^[2] Dec.: −1259.296±0.034 mas/yr^[2]
Parallax (π)	89.1284 ± 0.0331 mas^[2]
Distance	36.59 ± 0.01 ly (11.220 ± 0.004 pc)

Details^[4]

Mass	0.1774±0.0045 `M`_☉
Radius	0.2113±0.0063 `R`_☉
Luminosity (bolometric)	0.003589+0.000067 −0.000071 `L`_☉
Surface gravity (log g)	5.039±0.027 cgs
Temperature	3071+34 −22 K
Metallicity [Fe/H]	−0.20±0.20 dex

Other designations
GJ 585, Ci 20 930, G 137-2, G 136-103, LFT 1203, LHS 396, LSPM J1523+1727, LTT 14584, NLTT 40124, PLX 3481, PM 15216+1739, PM J15238+1727, Ross 508, TIC 400019820, 2MASS J15235112+1727569^[5]
Database references
SIMBAD	data

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