results
K2-34 b
Total Reductions to Date: 5
Date Processed: 09/24/2023 at 00:07:22 (PDT)
Exoplanet Watch Ephemeris
| Parameter | Value | Uncertainty |
|---|---|---|
| Orbital Period (Days) | 2.995424960428945 | 3.996017742814194e-05 |
| Ephemeris (BJD_TDB) | 2459693.6248470107 | 0.0015912151318698271 |
| Time saved (hours) | - |
Assumed Priors
| Parameter | Value | Uncertainty | Units | Reference |
|---|---|---|---|---|
| RA | 127.5787231 | decimal | ||
| DEC | 22.2359194 | decimal | ||
| Host Star Metallicity | 0.01 | 0.03 | Castro-González et al. 2022 | |
| Host Star log(g) | 4.2 | 0.03 | Log10(cgs) | Castro-González et al. 2022 |
| Host Star Radius [R_Sun] | 1.42 | 0.06 | Sol | Castro-González et al. 2022 |
| Host Star Effective Temperature [K] | 6168.0 | 46.0 | K | Castro-González et al. 2022 |
| a/Rs | 6.68 | 0.1 | Castro-González et al. 2022 | |
| eccentricity | 0.0 | Stassun et al. 2017 | ||
| inclination [degrees] | 83.232 | 0.275 | deg | Mayo et al. 2018 |
| omega [degrees] | 0.0 | deg | Castro-González et al. 2022 | |
| orbital period [days] | 2.9956348 | 2e-07 | day | Castro-González et al. 2022 |
| Rp | 13.75 | 0.58 | R_Earth | Castro-González et al. 2022 |
| Rp/Rs | 0.0866 | 0 | Kruse et al. 2019 | |
| ephemeris [JD] | 2457141.351483 | 6.9e-05 | BJD | Castro-González et al. 2022 |
Previously Published Mid-Transit Times
| Value | Uncertainty | Units | Reference |
|---|---|---|---|
| 2459573.807852 | 9.6e-05 | BJD | ExoFOP-TESS TOI |
Observations
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 0.931 | 0.01 |
| Am2 | 0.0631 | 0.0052 |
| a/Rs | 6.24 | 0.28 |
| Rp/Rs | 0.0079 | 0.0079 |
| ephemeris [JD] | 2459642.686 | 0.012 |
| eccentricity | 0.0 | |
| inclination [degrees] | 83.232 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 2.9956348 | |
| u0 | 2.1134106806878856 | |
| u1 | -3.837716668018534 | |
| u2 | 4.322416883030741 | |
| u3 | -1.598110831291062 | |
| duration | 0.1 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| CV | Clear (unfiltered) reduced to V sequence | 350.0 nm | 850.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | NANF (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 0.95 | 0.0063 |
| Am2 | 0.048 | 0.022 |
| a/Rs | 7.16 | 0.28 |
| Rp/Rs | 0.041 | 0.016 |
| ephemeris [JD] | 2459645.702 | 0.012 |
| eccentricity | 0.0 | |
| inclination [degrees] | 83.232 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 2.9956348 | |
| u0 | 2.5372539978342923 | |
| u1 | -4.5748245069075635 | |
| u2 | 4.709115896563633 | |
| u3 | -1.671545317319067 | |
| duration | 0.08 | 0.0099 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| CBB | Astrodon ExoPlanet-BB | 500.0 nm | 1000.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | LPAC (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 1.2773 | 0.0055 |
| Am2 | -0.205 | 0.037 |
| a/Rs | 6.54 | 0.13 |
| Rp/Rs | 0.1726 | 0.0099 |
| ephemeris [JD] | 2459654.6827 | 0.0012 |
| eccentricity | 0.0 | |
| inclination [degrees] | 83.232 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 2.9956348 | |
| u0 | 2.488731970928545 | |
| u1 | -4.424468842094234 | |
| u2 | 4.544091206503082 | |
| u3 | -1.6083542676251579 | |
| duration | 0.1299 | 0.0052 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| RJ | Johnson R | 590.0 nm | 810.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | MBEB (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 0.946 | 0.0071 |
| Am2 | 0.054 | 0.026 |
| a/Rs | 6.88 | 0.29 |
| Rp/Rs | 0.094 | 0.025 |
| ephemeris [JD] | 2459666.6707 | 0.0091 |
| eccentricity | 0.0 | |
| inclination [degrees] | 83.232 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 2.9956348 | |
| u0 | 2.8200370561123753 | |
| u1 | -5.090593535370159 | |
| u2 | 5.00000589530806 | |
| u3 | -1.7294493415443828 | |
| duration | 0.065 | 0.011 |
Not included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| I | Cousins I | 721.0 nm | 875.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | RWEA (collaborate/publish) |
| Parameter | Value | Uncertainty |
|---|---|---|
| Am1 | 0.997 | 0.0053 |
| Am2 | 0.0009 | 0.0047 |
| a/Rs | 6.66 | 0.18 |
| Rp/Rs | 0.1075 | 0.0078 |
| ephemeris [JD] | 2459693.6364 | 0.0039 |
| eccentricity | 0.0 | |
| inclination [degrees] | 83.232 | |
| omega [degrees] | 0.0 | |
| orbital period [days] | 2.9956348 | |
| u0 | 2.819228114561583 | |
| u1 | -5.08623604342956 | |
| u2 | 4.993663781405482 | |
| u3 | -1.7266557781261165 | |
| duration | 0.1102 | 0.0053 |
Included in ephemeris calculations
Posteriors ( PNG, PDF - high resolution )
Observation Data ( JSON )
| Filter | Detail | Min | Max |
|---|---|---|---|
| I | Cousins I | 721.0 nm | 875.0 nm |
| Organization | Observer Code | Secondary Observers |
|---|---|---|
| AAVSO | RWEA (collaborate/publish) |
