results

K2-22 b

Total Reductions to Date: 3

Date Processed: 09/06/2025 at 07:00:04 (PDT)

Exoplanet Watch Ephemeris

Parameter Value Uncertainty
Orbital Period (Days) - -
Ephemeris (BJD_TDB) - -
Time saved (hours) -  

Assumed Priors

Parameter Value Uncertainty Units Reference
RA 169.4827046 decimal
DEC 2.6190363 decimal
Host Star Metallicity 0.032 0.12 Adams et al. 2021
Host Star log(g) 4.7 0.04 Log10(cgs) Adams et al. 2021
Host Star Radius [R_Sun] 0.58 0.03 Sol Adams et al. 2021
Host Star Effective Temperature [K] 3879.0 90.0 K Adams et al. 2021
a/Rs 3.0 0.08 Adams et al. 2021
eccentricity 0.19 0.221175 Dressing et al. 2017
inclination [degrees] 90.6 8.0 deg Adams et al. 2021
omega [degrees] 46.7 90.897 deg Dressing et al. 2017
orbital period [days] 0.381073 2.4e-05 day Adams et al. 2021
Rp 2.3 0.1 R_Earth Adams et al. 2021
Rp/Rs 0.079 0 Kruse et al. 2019
ephemeris [JD] 2456846.94318 0.00031 HJD Adams et al. 2021

Previously Published Mid-Transit Times

Value Uncertainty Units Reference
2456809.21678 0.00049 BJD-TDB Crossfield et al. 2016
2456811.1208 0.0006 BJD Sanchis-Ojeda et al. 2015
2456846.94318 0.00031 HJD Adams et al. 2021
2456867.13923 0.000155 BJD Dressing et al. 2017, Adams et al. 2016

Observations

Light curve chart for 0001336
Parameter Value Uncertainty
Am1 0.897 0.025
Am2 0.075 0.027
a/Rs 2.66 0.23
Rp/Rs 0.03 0.038
ephemeris [JD] 2459671.839 0.012
eccentricity 0.19
inclination [degrees] 90.6
omega [degrees] 46.7
orbital period [days] 0.381073
u0 2.162726917970754
u1 -3.0372781875710197
u2 2.8184550807467317
u3 -0.943903769148212
duration 0.039 0.0073
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 0001538
Parameter Value Uncertainty
Am1 0.5 0.27
Am2 0.37 0.4
a/Rs 2.72 0.23
Rp/Rs 0.152 0.045
ephemeris [JD] 2459731.685 0.012
eccentricity 0.19
inclination [degrees] 90.6
omega [degrees] 46.7
orbital period [days] 0.381073
u0 2.161677413877126
u1 -3.0362921413933393
u2 2.8184601646941387
u3 -0.9438453951795962
duration 0.0418 0.0083
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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)
Light curve chart for 0003185
Parameter Value Uncertainty
Am1 1.135 0.026
Am2 -0.093 0.074
a/Rs 3.24 0.23
Rp/Rs 0.156 0.044
ephemeris [JD] 2460043.774 0.01
eccentricity 0.19
inclination [degrees] 90.6
omega [degrees] 46.7
orbital period [days] 0.381073
u0 2.2273591493034206
u1 -3.051261867918391
u2 2.7161498127774304
u3 -0.8922470536886737
duration 0 0
Not included in ephemeris calculations
Light Curve ( PNG, PDF - high resolution )
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 LPAC (collaborate/publish)