MM6.5V Kirkpatrick(in GrayCorbally09) calls GJ 1111 the primary M6.5V standard. Boeshaar85 standard: GJ 1111 (G 51-15) - dM6.5 (in text) Turnshek85 standard: GJ 1111 (G 51-15) - dM6.5e Kirkpatrick91 standard: LHS 523 - M6.5V (primary standard) GJ 1111 (G 51-15) - M6.5V (primary standard) LHS 191 - M6.5V (secondary standard) Kirkpatrick97 standard: GJ 1111 - M6.5V Henry02 standards: GJ 1111 - M6.5V (cites Henry94) LHS 292 - M6.5V (cites Henry94) Henry04 standard: GJ 1111 - M6.5V (primary standard) Kirkpatrick(GrayCorbally09): GJ 1111 - M6.5V (primary standard) RECONS list shows GJ 1111 to be the nearest M6.5V star, followed by LHS 292 (J1048-1120). (B-V)(M6.5V) = 2.06 ; linear fit to Leggett92 (B-V=0.8367+0.2852*V-I, V-I=4.29) (B-V)(M6.5V) = 2.066 ; pri. stan. GJ 1111 (B-V)(M6.5V) = 2.07 ; trend for V-Ks=7.65 (B-V)(M6.5V) = 2.10 ; Leggett92 "old disk" (B-V)(M6.5V) = 2.10 ; sec. stan. LHS 292 => adopt (B-V)(M6.5V) = 2.07 [updated 7/17/2020] (V-R)(M6.5V) = 2.12 ; Bessell91 "old disk" (R-I)(M6.5V) = 2.38 ; Bessell91 "old disk" (V-I)(M6.5V) = 4.57 ; exemplar LHS 2930 (V-I)(M6.5V) = 4.53 ; sec. stan. GJ 3622 = LHS 292 (V-I)(M6.5V) = 4.50 ; Bessell91 "old disk" (V-I)(M6.5V) = 4.41 ; trend Dieterich SpT vs. V-I (V-I)(M6.5V) = 4.37 ; sec. stan. GJ 3289 = LHS 191 (V-I)(M6.5V) = 4.30 ; Hawley96 (V-I)(M6.5V) = 4.29 ; color trend for V-Ks=7.65 (V-I)(M6.5V) = 4.27 ; exemplar LHS 2090 (V-I)(M6.5V) = 4.26 ; pri. stan. GJ 1111 (V-I)(M6.5V) = 4.26 ; sec. stan. GJ 4281 => adopt (V-Ic)(M6.5V) = 4.29 [updated 7/17/2020] (G-J)(M6.5V) = 3.357 ; Bentley18/interp (G-Ks)(M6.5V) = 4.269 ; Bentley18/interp (Ks-W2)(M6.5V) = 0.415 ; Bentley18/interp (W1-W2)(M6.5V) = 0.215 ; Bentley18/interp (Ks-W1)(M6.5V) = 0.163 ; sec. stan. GJ4281/allWISE (Ks-W1)(M6.5V) = 0.195 ; sec. stan. GJ4281/WISE (Ks-W1)(M6.5V) = 0.200 ; Bentley18/interp (Ks-W1)(M6.5V) = 0.230 ; pri. stan. GJ1111/WISE (Ks-W1)(M6.5V) = 0.230 ; fit to Winters15 data for V-Ks=7.63 (Ks-W1)(M6.5V) = 0.231 ; Avenhaus12 for V-Ks=7.63 (Ks-W1)(M6.5V) = 0.232 ; sec. stan. GJ3289/WISE (Ks-W1)(M6.5V) = 0.235 ; Dupuy12 trend (N=15, d<50pc) (Ks-W1)(M6.5V) = 0.236 ; sec. stan. GJ3289/allWISE (Ks-W1)(M6.5V) = 0.314 ; pri. stan. GJ1111/allWISE => adopt (Ks-W1)(M6.5V) = 0.235 [updated 12/28/2019] (V-Ks)(M6.5V) = 7.057 ; sec. stan. GJ 4281 (V-Ks)(M6.5V) = 7.33 ; trend fit to Dahn17 for M6.5V (V-Ks)(M6.5V) = 7.564 ; pri. stan. GJ 1111 (V-Ks)(M6.5V) = 7.627 ; sec. stan. GJ 3289 (V-Ks)(M6.5V) = 7.673 ; exemplar LHS 2090 (V-K)(M6.5V) = 7.7 ; Hawley96 (V-Ks)(M6.5V) = 7.854 ; sec. stan. GJ 3622 (V-Ks)(M6.5V) = 8.092 ; exemplar LHS 2930 => adopt(V-Ks)(M6.5V) = 7.60 ** [updated 11/1/2020] => adopt (V-J)(M6.5V) = 6.627 [updated 1/15/2021] => adopt (V-H)(M6.5V) = 7.236 [updated 1/15/2021] => adopt (J-H)(M6.5V) = 0.609 [updated 1/15/2021] => adopt (B-V)(M6.5V) = 2.065 [updated 1/15/2021] => adopt (V-I)(M6.5V) = 4.263 [updated 1/15/2021] => adopt (V-R)(M6.5V) = 1.988 [updated 1/15/2021] => adopt (R-I)(M6.5V) = 2.275 [updated 1/15/2021] (J-H)(M6.5V) = 0.643 (+-0.011 sem, +-0.021 stdev) ; N=5 M6.5V Cruz03 (H-Ks)(M6.5V) = 0.366 (+-0.010 sem, +-0.019 stdev) ; N=5 M6.5V Cruz03 (H-Ks)(M6.5V) = 0.36 ; trend of Dieterich14 for V-Ks=7.60 => adopt (H-Ks)(M6.5V) = 0.36 [updated 1/15/2021] (J-Ks)(M6.5V) = 1.008 (+-0.002 sem, +-0.005 stdev) ; N=5 M6.5V Cruz03 (Ks-L')(M6.5V) = 0.313 ; Dupuy12 polynomial (Bp-Rp)(M6V) = 3.95 ; M6V mean (Bp-Rp)(M6.5V) = 4.2404 ; WISEA_J154045.67-510139.3_ M6.5 (Bp-Rp)(M6.5V) = 4.3833 ; GJ_4281 sec. stan. (Bp-Rp)(M6.5V) = 4.3916 ; LP_783-2_ M6.5Ve (Bp-Rp)(M6.5V) = 4.4148 ; GJ_1111 pri. stan. (Bp-Rp)(M6.5V) = 4.4215 ; LHS_2090 = LP_368-128_ exemplar (Bp-Rp)(M6.5V) = 4.500 ; M5-M8.5V color trend (Bp-Rp)(M6.5V) = 4.5529 ; GJ_3289 sec. stan. (Bp-Rp)(M6.5V) = 4.6018 ; GJ_3622 sec. stan. (Bp-Rp)(M7V) = 4.75 ; M7V mean (Bp-Rp)(M6.5V) = 4.8267 ; exemplar LHS=2930 = GJ_3855 => adopt (Bp-Rp)(M6.5V) = 4.50 [updated 11/18/2020] (G-Rp)(M6.5V) = 1.4587 ; WISEA_J154045.67-510139.3_ M6.5 (G-Rp)(M6.5V) = 1.4724 ; LP_783-2 M6.5V (G-Rp)(M6.5V) = 1.4771 ; GJ_4281 sec. stan. (G-Rp)(M6.5V) = 1.479 ; color trend M0V-M9V (G-Rp)(M6.5V) = 1.4822 ; GJ_1111 pri. stan. (G-Rp)(M6.5V) = 1.4850 ; LHS_2090 = LP_368-128_ exemplar (G-Rp)(M6.5V) = 1.4911 ; GJ_3622 sec. stan. (G-Rp)(M6.5V) = 1.5077 ; GJ_3289 exemplar (G-Rp)(M6.5V) = 1.5345 ; LHS_2930 = GJ_3855 exemplar => adopt (G-Rp)(M6.5V) = 1.48 [updated 11/18/2020] (Bp-G)(M6.5V) = 2.9062 ; GJ_4281 sec. stan. (Bp-G)(M6.5V) = 2.9326 ; GJ_1111 pri. stan. (Bp-G)(M6.5V) = 2.9365 ; LHS_2090 exemplar (Bp-G)(M6.5V) = 3.02 ; Bp-Rp=4.50, G-Rp=1.48 (Bp-G)(M6.5V) = 3.0451 ; GJ_3289 exemplar (Bp-G)(M6.5V) = 3.1108 ; GJ_3622 sec. stan. (Bp-G)(M6.5V) = 3.2921 ; LHS_2930 = GJ_3855 exemplar => adopt (Bp-G)(M6.5V) = 3.02 [updated 11/18/2020] (G-V)(M6.5V) = -3.013 ; GJ_3855 exemplar (G-V)(M6.5V) = -2.9307 ; GJ_3622 sec. stan. (G-V)(M6.5V) = -2.7478 ; GJ_3289 exemplar (G-V)(M6.5V) = -2.70 ; M_G=14.4, Mv=17.1 (G-V)(M6.5V) = -2.688 ; M6V-M6.5V linear fit G-V vs. V-Ks (G-V = 2.2157 - 0.645259*(V-Ks) for V-Ks=7.6) (G-V)(M6.5V) = -2.678 ; LHS_2090 exemplar (G-V)(M6.5V) = -2.675 ; polynomial fit to SIMBAD d<25pc M dwarfs (G-V)(M6.5V) = -2.6383 ; GJ_1111 pri. stan. (G-V)(M6.5V) = -2.337 ; GJ_4281 sec. stan. => adopt (G-V)(M6.5V) = -2.70 [updated 11/1/2020] => adopt (G-Ks)(M6.5V) = 4.90 = 7.60 + -2.70 [updated 12/26/2021] (r-i)(M6.5V) = 1.981 (+-0.05 rms) ; West05 fit for (V-Ic)=4.29 (i-z)(M6.5V) = 1.385 ; poly fit to d<75pc M dwarfs in SIMBAD for G-Ks=4.90 => adopt (i-z)(M6.5V) = 1.39 [updated 12/27/2021] (z-J)(M6.5V) = 1.881 (+-0.053 rms) ; poly fit to d<50pc SIMBAD M dwarfs for G-Ks=4.90 => adopt (z-J)(M6.5V) = 1.88 [updated 12/27/2021] Teff(M6.5V) = 2850 K ; Rajpurobit18 (mean for N=2 M6.5Vs) Teff(M6.5V) = 2813 K ; sec. stan. GJ 3289 (Dahn02) Teff(M6.5V) = 2769 K ; exemplar LHS 2090 Teff(M6.5V) = 2756 K ; Filippazzo15 calibration (M6V-T9V) Teff(M6.5V) = 2740 K ; logL=-3.124 & Rad=0.126 Teff(M6.5V) = 2735 K ; pri. stan. GJ 1111 (adopted Teff) Teff(M6.5V) = 2717 K ; Golimowski04 Teff(M6.5V) = 2712 K ; sec. stan. GJ 3622 Teff(M6.5V) = 2710 K ; empirical L-R relation for logL=-3.124 Teff(M6.5V) = 2700 K ; Rajpurohit13(N=4) Teff(M6.5V) = 2700 K ; Cifuentes20 for CARMENES M7V(N=8) Teff(M6.5V) = 2700 K ; Bessell91 "old disk" Teff(M6.5V) = 2577 K ; sec. stan. GJ 4281 (poorly constrained) Teff(M6.5V) = 2400 K ; Leggett92 "old disk" => adopt Teff(M6.5V) = 2740 K (logT = 3.438) [updated 7/14/2020] BCv(M6.5V) = -5.157 mag ; exemplar stan. LHS 2930 BCv(M6.5V) = -5.10 mag ; Bessell91("old disk"; BCv = (V-I)-BC_I) BCv(M6.5V) = -4.67 mag ; sec. stan. GJ 3289 (calculated using Dahn02) BCv(M6.5V) = -4.62 mag ; BC_Ks=2.98, V-Ks=7.60 BCv(M6.5V) = -4.583 mag ; pri. stan. GJ 1111 (calc. using Mann15) BCv(M6.5V) = -4.578 mag ; Mann15 for V-J=6.627(V-Ks=7.60) BCv(M6.5V) = -4.53 mag ; pri. stan. GJ 1111 (Leggett96) => adopt BCv(M6.5V) = -4.62 [update 7/14/2020; BC_Ks=2.98, V-Ks=7.60] BC_K(M6.5V) = 3.042 ; Golimowski04 BC_K(M6.5V) = 3.035 ; Mann15 for V-J=6.627(V-Ks=7.60) BC_K(M6.5V) = 3.00 ; pri. stan. GJ 1111 (Leggett96) BC_K(M6.5V) = 2.981 ; pri. stan. GJ 1111 (calc. using Mann15) BC_K(M6.5V) = 2.98 ; interp. among mid/late M dwarfs BC_K(M6.5V) = 2.957 ; sec. stan. GJ 3289 (calculated using Dahn02) BC_K(M6.5V) = 2.95 ; LHS 292 (Leggett96) BC_K(M6.5V) = 2.935 ; exemplar LHS 2930 (Leggett01, IAU2015 scale) => adopt BC_K(M6.5V) = 2.98 [updated 1/15/2021; BCv=-4.62, V-Ks=7.60] Mv(M6.5V) = 16.72 ; sec. stan. GJ 4281 Mv(M6.5V) = 17.05 ; pri. stan. GJ 1111 Mv(M6.5V) = 17.05 ; Dieterich14 calibration for V-Ks=7.60 Mv(M6.5V) = 17.09 ; exemplar LHS 2090 Mv(M6.5V) = 17.10 ; M_Ks=9.47, V-Ks=7.63 Mv(M6.5V) = 17.1 ; M_G=14.4, G-V=-2.7 Mv(M6.5V) = 17.14 ; Kirkpatrick94 Mv(M6.5V) = 17.15 ; Finch14 calibration for V-Ks=7.60 Mv(M6.5V) = 17.24 ; EEM polynomial fit for V-Ks=7.60 Mv(M6.5V) = 17.29 ; sec. stan. GJ 3289 Mv(M6.5V) = 17.49 ; sec. stan. GJ 3622 Mv(M6.5V) = 17.89 ; exemplar LHS 2930 => adopt Mv(M6.5V) = 17.10 [updated 12/10/2020] (V-Ks=7.6, M_Ks=9.5) => adopt M_G(M6.5V) = 14.40 [adopted 12/10/2020] (Mv=17.1, G-V=-2.70) => adopt M_Ks(M6.5V) = 9.50 [updated 12/10/2020] (Mv=17.1, V-Ks=7.6) M_G(M6.5V) = 14.1274 ; WISEA J154045.67-510139.3 M_G(M6.5V) = 14.1671 ; LP 783-2 M_G(M6.5V) = 14.264 ; trend SIMBAD d<10pc sample M_G(M6.5V) = 14.2911 ; LP 788-1 M_G(M6.5V) = 14.3793 ; LP 760-3 M_G(M6.5V) = 14.4 ; Mv=17.1, G-V=-2.7 M_G(M6.5V) = 14.4082 ; LHS_2090 = LP 368-128 examplar M_G(M6.5V) = 14.41 ; median nearest 10 M6.5s in SIMBAD M_G(M6.5V) = 14.4163 ; pri. stan. GJ1111 = G 51-15 M_G(M6.5V) = 14.5458 ; LP 535-12 M_G(M6.5V) = 14.5524 ; LP 731-58 M_G(M6.5V) = 14.6746 ; LP 335-12 M_G(M6.5V) = 14.8733 ; LP 98-79 M_Ks(M6.5V) = 9.79 ; exemplar LHS 2930 M_Ks(M6.5V) = 9.67 ; sec. stan. GJ 3289 M_Ks(M6.5V) = 9.66 ; sec. stan. GJ 4281 M_Ks(M6.5V) = 9.63 ; sec. stan. GJ 3622 M_Ks(M6.5V) = 9.65 ; EEM polynomial fit for V-Ks=7.60 M_Ks(M6.5V) = 9.55 ; Finch14 polynomial for V-Ks=7.60 M_Ks(M6.5V) = 9.50 ; Mv=17.1, V-Ks=7.60 M_Ks(M6.5V) = 9.49 ; pri. stan. GJ 1111 M_Ks(M6.5V) = 9.47 ; Dupuy12 polynomial M_Ks(M6.5V) = 9.45 ; Dieterich14 polynomial for V-Ks=7.60 M_Ks(M6.5V) = 9.41 ; Dupuy12 mean M_Ks(M6.5V) = 9.41 ; exemplar LHS 2090 logL(M6.5V) = -3.09 ; pri. stan. GJ 1111 (Leggett96) logL(M6.5V) = -3.096 ; M_Ks=9.50, BC_K=2.98, Mbol=12.480 logL(M6.5V) = -3.16 ; LHS 292 (Leggett01) => adopt logL(M6.5V) = -3.096 [updated 12/28/2020] => adopt Mbol(M6.5V) = 12.48 [updated 12/28/2020] Rad(M6.5V) = 0.1256 Rsun ; logL=-3.096, Teff=2740K Rad(M6.5V) = 0.1254 Rsun ; Rabus19 trend for Teff=2730K Rad(M6.5V) = 0.1242 Rsun ; Mann15 trend M_Ks=9.50, [Fe/H]=0.0 => adopt Rad(M6.5V) = 0.126 Rsun [updated 12/28/2020] Mass(M6.5V) = 0.096 Msun ; Mann18 calib. for M_Ks=9.50 Mass(M6.5V) = 0.096 Msun ; interp M6V(0.102Msun)-M7V(0.090Msun) Mass(M6.5V) = 0.100 Msun ; Benedict16 calibration for M_Ks=9.50 Mass(M6.5V) = 0.104 Msun ; EEM calibration to Dupuy10 systems for M_Ks=9.57 => adopt Mass(M6.5V) = 0.096 Msun [updated 11/15/2021] # No Standard Boeshaar85 does not list an M6.5V standard # Primary Standard GJ 1111 = LHS 248 = G 51-15 = DX Cnc M6V: Bessell91,Hawley97 *M6.5V: Boeshaar76,Boeshaar85(in text),Turnshek85(stan),Henry94,Kirkpatrick94,Kirkpatrick97(stan),Henry02,Henry04,Kirkpatrick(GrayCorbally09) M6.7: Mann15 V=14.824+-0.023(Mermilliod91), V=14.90(Bessell83), B-V=2.05(Bessell83), B-V=2.066+-0.009(Mermilliod91), U-B=2.110(Mermilliod91), V-Rc=2.002(Bessell83), R-Ic=2.259(Bessell83), V-Ic=4.261(Bessell83), J=8.235+-0.021(2MASS), 7.617+-0.018(2MASS), Ks=7.260+-0.024(2MASS). WISE: W1=7.030+-0.031, W2=6.819+-0.020, W3=6.630+-0.015, W4=6.467+-0.058. allWISE: W1=6.946+-0.049, W2=6.782+-0.021, W3=6.618+-0.016, W4=6.462+-0.064. Ks-W1=0.230(WISE), Ks-W1=0.314(allWISE). V-Ks=7.564(Mermilliod,2MASS). Leggett96 derives: flux=2.01e-12 W/m^2, logL=-3.09, mbol=10.26, Mbol=12.47, BCv=-4.53, BC_K=3.00. mbol=9.985+-0.038 (calculated using 2MASS and relations of Casagrande08). logL=-3.107+-0.022(Dieterich14), Rad=0.128+-0.0042Rsun(Dieterich14). Mann15 estimates fbol = (0.2016+-0.0022)e-11 W/m2, on IAU2015 scale mbol = 10.241+-0.012, BC_Ks = mbol - Ks = 10.241 - 7.260 = 2.981, BCv = 10.241 - 14.824 = -4.583. Teffs: 2430K(Berriman92), 2449+-150K(Veeder74), 2450+-110K(Berriman87), 2451K(V-K=>Casagrande08), 2660K(Lepine13), 2690+-27K(Dieterich14), 2700+-150K(Leggett96), 2769K(RojasAyala12), 2800+-60K(Mann15), 2850+-50K(Jones96), 2900K(Lyubchik00), 2990K(Cesetti13), 3207K(Terrien15#1), 3376K(Terrien15#2) => = 2735K. Bimodal distribution of Teffs around ~2450K and ~2800K. post-1990 median Teff = 2769K. GaiaDR2: 279.2901+-0.1345mas, G=12.1857+-0.0004, E(BR/RP)=1.718, Bp-Rp=4.4148, Bp-G=2.9326, G-Rp=1.4822. Mv=17.054+-0.023, M_Ks=9.490+-0.024, M_G=14.416+-0.001. # Secondary Standards GJ 4281 = LHS 523 = LP 760-3 = 2MASS J22285440-1325178 *M6.5V: Giampapa86,Kirkpatrick91(pri),Geballe02,Cruz02 M6Ve: Bessell91 V=16.90(Winters15), V=17.14(vanAltena95), R=14.90(Winters15), I=12.56(Winters15), J=10.768+-0.023(2MASS), H=10.217+-0.025(2MASS), Ks=9.843+-0.021(2MASS). WISE: W1=9.648+-0.024, W2=9.436+-0.021, W3=9.240+-0.034. AllWISE: W1=9.680+-0.023, W2=9.457+-0.020, W3=9.229+-0.035. B-V=2.03(Reid02), B-V=2.16(vanAltena95), V-Ks=7.057, V-I=4.26(Reid02). Teff: 2536K(Jenkins09), 2617+795-110K(Huber16) => ~2577K. plx = 91.8949 0.0948mas(GaiaDR2), plx=91.82+-0.67mas(Weinberger16). Mv =16.72(Winters15,GaiaDR2), M_Ks=9.659+-0.021(2MASS,GaiaDR2). GJ 3289 = LHS 191 = LP 535-12 = NLTT 13261 *M6.5V: Bessell91,Kirkpatrick91(sec) Dahn02 lists: plx=58.4+-1.8 mas (=> m-M=1.17+-0.07), V=18.32+-0.03, Rc=16.24+-0.03, Ic=13.95+-0.02, V-Ic=4.37, K=10.69+-0.04, M_J=10.43, BC_J=2.05, Mbol=12.48, R=0.1195Rsun, T=2813+-75K. Hence, mbol = 13.65, BCv = 13.65 - 18.32 = -4.67, BC_K = 13.65 - 10.693 = 2.957. V=18.32(vanAltena95), J=11.623+-0.024(2MASS), H=11.072+-0.022(2MASS), Ks=10.693+-0.023(2MASS). WISE: W1=10.461+-0.022, W2=10.240+-0.019, W3=9.934+-0.050. allWISE: W1=10.457+-0.023, W2=10.235+-0.019, W3=9.940+-0.054. (Ks-W1)=0.232(WISE), (Ks-W1)=0.236(allWISE). V-Ks = 7.627 (Dahn02,2MASS). plx=65.24+-1.51mas(Weinberger16), plx=62.3387 0.1654mas(GaiaDR2). Mv=17.294+-0.031, M_Ks=9.667+-0.024. GJ 3622 = LHS 292 = LP 731-58 = 2MASS J10481258-1120082 M6.0: Dieterich14 *M6.5V: Henry94,Kirkpatrick94,Hawley97,Henry02,Alonso-Floriano15 M6.5-7V: Dahn86 M7: Gaidos14 Dahn86 considered LHS 292 the lowest-luminosity M dwarf known within 5.2 pc (17 ly) of the Sun at the time (1986). Dahn86 considered the star later than G51-15(M6.5V) but earlier than VB8(M7V), hence M6.5-7V. V=15.60+-0.01(Dahn86,Leinert97), V=15.784+-0.028(Henden16), V=15.78+-0.057(Dieterich14), V=15.73(Reid02), B-V=2.10+-0.03(Dahn86), Rc=13.63+-0.002(Dieterich14), Ic=11.25+-0.025(Dieterch14), V-I=4.51+-0.01(Dahn86), V-Ic=4.53(Dieterich14), J=8.857+-0.021(2MASS), H=8.263+-0.036(2MASS), Ks=7.926+-0.033(2MASS), B-V=2.013+-0.110(Henden16), V-R=2.14(Reid02), V-I=4.38(Reid02). Adopting V=15.78, Ks=7.854 => V-Ks=7.926. Teff = 2450K(Casagrande08), 2588+-32K(Dieterich14), 2600K(Leggett00), 2700K(Rajpurohit13), 2725K(Golimowski04), 2739+-60K(Gaidos14), 2772+-25K(RojasAyala12), 2784K(Stelzer13) => = 2712K. logL=-3.166+-0.016(Dieterich14), R=0.129+-0.0041Rsun(Dieterich14). [M/H]=-0.28+-0.12(RojasAyala12). plx = 217.1+-5.0mas(Dahn86), plx = 219.1159 0.1567mas(GaiaDR2) => Mv= 17.487+-0.028(APASS,DR2), M_Ks=9.629+-0.033(2MASS,DR2). # Exemplar LHS 2930 = GJ 3855 = LP 98-79 = 2MASS J14303787+5943249 *M6.5V: Bessell91,Kirkpatrick92(PhD),Kirkpatrick93,Leggett01,Geballe02,Cruz03,Reid06(M6.5Ve) M8/9V: Newton14(near-IR) Not considered a standard anywhere, but M6.5 in nearly all literature. Colors and SED presented in detail in Leggett01. plx=103.8+-1.4mas (Monet92), plx=100.2930 0.0793mas(GaiaDR2). V=17.88(Monet92,vanAltena95), I =13.31(Leggett01), I-J=2.54(Leggett01), J-H=0.65(Leggett01), H-K=0.38(Leggett01), K=9.74(Leggett01), K-L'=0.52(Leggett01), J = 10.790+-0.018(2MASS), H=10.140+-0.020(2MASS), Ks=9.788+-0.020(2MASS) => V-Ks=8.092(Monet92,2MASS). Leggett01: fbol = 2.05e-13 W/m2 => mbol = 12.723 => BC_Ks = 12.723 - 9.788 = 2.935, BCv = 12.723 - 17.88 = -5.157. GaiaDR2: plx=100.2930+-0.0793mas, G= 14.8670 0.0006, E(BR/RP)=1.786, Bp-Rp=4.8267, Bp-G=3.2921, G-Rp=1.5345. M_G=14.873+-0.002, Mv=17.89, M_Ks=9.794+-0.020(2MASS,DR2). LHS 2090 = LP 368-128 = 2MASS J09002359+2150054 M6Ve: Henry04,Henry06(M6V),Henry18(M6.0) *M6.5Ve: Scholz01(M6.5V),Reid02(M6.5),Alonso-Floriano15 M7: RojasAyala12(near-IR) M7.5: Bardalez-Gagliuffi14(near-IR) Scholz01 reported discovery that LHS2090 was only 6pc away. Distribution of published types suggests that it appears redder in near-IR. V=16.11+-0.032(Dieterich14), Rc=14.12+-0.020(Dieterich14), Ic=11.84+-0.010(Dieterich14), 2MASS: J=9.436+-0.020, H=8.836+-0.023, Ks=8.437+-0.021. GaiaDR2: plx=156.7584+-0.1329mas, G=13.4323+-0.0006, E(BR/RP)=1.722, Bp-Rp=4.4215, Bp-G=2.9365, G-Rp=1.4850. V-Ks = 16.11 - 8.437 = 7.673. G-V = 13.4323 - 16.11 = -2.678. Mv=17.086+-0.032, M_G=14.408+-0.002, M_Ks=9.413+-0.021. Teff=2464+-69K(Casagrande08), 2462K(Anders19), 2680+-24K(Dieterich14), 2753K(Jenkins09), 2769+-26K(RojasAyala12), 2799+-63K(Muirhead18), 2800K(Rajpurohit13), 2814K(Stassun19), 2900K(Rajpurohit18) => = 2769K. # Other Stars LHS 2980 = LP 441-17 = 2MASS J14480337+1554149 M6.5V: Kirkpatrick92(PhD,DwarfArchive),Kirkpatrick93,Cruz03 M7.0: Reid05,Cruz07,Faherty09 J=12.483+-0.023, H=11.840+-0.022, Ks=11.475+-0.020(2MASS).