EI CVn
| Simbad link | EI CVn |
|---|---|
| Source publication | Xia, Qiqi (2025) - Minute-cadence Observations of the LAMOST Fields with the TMTS. VI. Physical Parameters of Contact Binaries |
| ADS link | 2025AJ....169..139X |
| Name in Source publication | J1402 |
| Orbital period in days (P [d]) | 0.260767 |
| Mass ratio (q) | 2.19 |
| Mass ratio determination | Spectroscopic |
| Temperature determination | Unknown |
| Type | Unspecified |
| Has total eclipse? | |
| Has spots? | |
| Has third light? | |
| Has period variation? | |
| Search TESS catalog of Eclipsing Binaries | TIC 232527034 |
| Solver | WD |
|---|---|
| Orbital period in days (P [d]) | 0.260767 |
| Mass ratio (q) | 2.19 |
| Orbital inclination in degrees (i [o]) | 87.6 |
| Fillout (f) | 0.13 |
| Primary temperature in Kelvins (T1 [K]) | 4544 |
| Secondary temperature in Kelvins (T2 [K]) | 4408 |
| Primary polar radius in units of orbital separation (r1p) | |
| Secondary polar radius in units of orbital separation (r2p) | |
| Surface potential (Ω) | 5.44 |
| Orbital separation in solar radii (a [R]) | 1.68 |
|---|---|
| Primary radius in solar units (R1 [R]) | 0.54 |
| Secondary radius in solar units (R2 [R]) | 0.77 |
| Primary mass in solar units (M1 [M]) | 0.29 |
| Secondary mass in solar units (M2 [M]) | 0.64 |
| Primary temperature in kelvins (T1 [K]) | 4544 |
| Secondary temperature in Kelvins (T2 [K]) | 4408 |
| Primary luminosity in solar units (L1 [L]) | 0.11 |
| Secondary luminosity in solar units (L2 [L]) | 0.2 |
| Distance in parsecs (d [pc]) | |
| Age in gigayears (τ [gyr]) |
| Orbital period in days (P [d]) | 0.260767 |
|---|---|
| Monotonic period variation in seconds per year (dPdt [s/y]) | -0.018783 |
| Cyclic period variation in years (Pc [y]) | 17.9 |
| Host | Longitude λ [o] | Latitude β [o] | Angular radius σ [o] | Temperature contrast Tspot/Tstar |
|---|---|---|---|---|
| Primary | 303.9 | 13.6 | 0.8 |
| Designation | Gaia DR3 1482006163730829568 |
|---|---|
| RA | 210:31:22.010567 |
| DEC | 34:02:39.68942 |
| l | 61.73374580564074 |
| b | 73.32689856137364 |
| G [mag] | 11.945464 |
| G_bp [mag] | 12.487737 |
| G_rp [mag] | 11.184488 |
| Parallax | 6.695137504911509 |
| Distance [pc] | 148.8175 |
| Temperature [K] | 4690.765 |
| Surface gravity log(g) [cm/s2] | 4.4956 |
| Metallicity [Fe/H] | 0.448 |
| Monochromatic extinction A0 [mag] | 0.0024 |
| Radius [R] | |
| Luminosity [L] |
| Temperature [K] | 4504.49 |
|---|---|
| Surface gravity log(g) [cm/s2] | 4.187 |
| Metallicity [Fe/H] | 0.098 |
| Simbad link | EI CVn |
|---|---|
| J magnitude | 10.568 |
| H magnitude | 10.001 |
| K magnitude | 9.877 |
| Johnson_U magnitude | |
| Johnson_B magnitude | 13 |
| Johnson_V magnitude | 12.21 |
| Johnson_R magnitude | 11.224 |
| Johnson_I magnitude | 10.7 |
| Sloan_u magnitude | |
| Sloan_g magnitude | 12.71 |
| Sloan_r magnitude | |
| Sloan_i magnitude | |
| Sloan_z magnitude |